1700 EST  FEB 18 , 20012… STARDATE   201202.18

 

 

  

 

I am hoping that by  the end of this storm will go into  the record books  and  with  people …   as another  considerable    success   for me   and  WXRISK.COM .  From back in beginning of the week I  was very cautious in declaring that this was going to be a all rain event.  Initially that sort of assertion bought a lot of ridicule with one of the Richmond TV meteorologists saying     ”That contrary to some omission may have heard this week and storms going to be all rain”

This afternoon that same TV station of course had to carry the NWS  3 to 6″   and Winter Storm watches.

Opps!

Its NOT Luck or  hype or  happenstance that this  event has       broekn my  way.   My  reluctance in the declaring this an   “all rain”    event early in the week   was  based upon a extremely well known history or climatology of Virginia Maryland North Carolina snowstorms.  Much of this information I will be posting and providing on the website over the next few weeks now that I have had a chance to catch my breath .      The fact of the matter is that most  meteorologists out there do not know what I know about   Virginia North Carolina and Maryland snowstorms.   But that  is  not all that unusual .

There a lot of meteorologists out there that know a lot more than   me about severe weather and   tornadoes.   or  atmosphere to physics …
or climate modeling.      But during the winter for me  it is East Coast snowstorms in general  of which I given a number of seminars and talks on and  in particular the difference between a Northeast U.S. snowstorm and one for the lower Middle Atlantic region  — North Carolina Virginia Maryland Delaware.

These two animals are not the same thing.  Sure there are occasions where all of these areas…   fFrom North Carolina to Boston see a  heavy major snowstorm.  Some examples of these  are :  January 1996 blizzard…  The great arctic blizzard FEB 11-14 of 1899…   the much  ballyhooed super storm   of March 1993….  The great middle Atlantic    snowstorm of February 1983 and the Knickerbockers storm from January 1922.  But these are exceptions.

The historic  record setting snowstorms of the lower Middle Atlantic   region  was the    JAN 26-27 1940   VA NC  BLizzard   –  did  not bring significant snow north of Baltimore  into the big cities of the northeast.     That  great storm of record in Richmond and all of central and Southern Virginia    was  REAL blizzard and terem was  a  s severe cold wave which followed.  That storm dropped 22 inches of snow in downtown Richmond ….30 inches up by Lynchburg and farmville…   but only 12 inches in DC and nothing north of the Pennsylvania Maryland border.

The March 1-3,  1980 blizzard in eastern and southeastern Virginia or  the one in February 1-3, 1980  or the one  in Jan 1-3  1980  were all total misses   for  the big cities of the Northeast.    Even the surprise blizzard   of January 25,2000   the  brought     huge amount to snow to of Charlotte   (20 inches )   and the entire state of North Carolina … 1 tom2  feet almost all Virginia into Maryland and Delaware …but the snow mounts dramatically fell apart over the big cities of the northeast.

Most of the meteorologists that I have talked to  and/or get information and discuss these synoptic patterns with me   have agree with the argument that I made back the beginning of the week that this coastal storm would NOT have a chance to turn the corner to come up the coast to bring heavy snow to Philadelphia New Jersey New York Boston and New England.  The reason being the system crashing into the West Coast  would act as a kicker — a force of energy which would show the system over the southeast U.S.  off the North Carolina Coast.

At this Point I am pretty much done looking at various weather models and it’s almost time for  “now casting”.  It is also however time to take a look at possible scenarios regarding my forecast  and  forecasts in general as to    WHAT   COULD GO WRONG:

1.  NORTHERN EDGE OF THE SNOW …  some of the 18z  Models and the   12z Saturday European Model do   have snow getting into Washington DC Southern Maryland  the lower Maryland Eastern shore … Southern Delaware even into Cape May NJ.    But not all the models agree about. There could be   pretty sharp cut off on the northern  edge.  It’s possible Washington, DC could see 4 o 5 inches of snow.

2. LOWER  MD  EASTERN SHORE…  Over the past 72 hours as we have moved into the short range models  …all the data has showed that the heavy snow areas in western .. nd Central Virginia narrow  to   a  “V  shaped  point  “    over the lower Maryland Eastern shore.  Some model data shows that the lower Maryland Eastern shore   may  be too warm for  the snow to stick …   but other data shows  there there  could in fact be a  2 to 4″ or  3-6 ” band of snow  over Dorchester   Wicomico Somerset and Worcester perhaps into southern Talbot and  Caroline  counties of the lower Maryland Eastern shore and   Sussex County in Delaware.

3. DELAYED START TIME …  Earlier in the week it looked  like the rain would come in   before  dawn Sunday over much of the southern third of Virginia and of course temperatures would  still be way too warm for the precipitation to fall as snow.  However over the last 36 to 48 hours the models have delayed the start of the precipitation.   By Sunday g 7:00 AM the rain is just across or along the Virginia North Carolina border.  This allows more cold air to get into the commonwealth  and   this air also  will have   lower  Dew points so that when the precipitation begins   and the  air   saturates   — where the temperature and the dew point meet — it does so at  or  below 32°.

4.   TEMPS  SUNDAY NIGHT IN CENTRAL VA….  I anticipate temperatures to drop down to 32° for most of the storm Sunday evening…  some areas might get as low as 31.  Either way it will be just cold enough for this snow to accumulate.  But  the  snow will  be a heavy wet snow especially the beginning and that will cause   some compaction with the snow on the ground.  In other words suppose you measure the snow at one particular time…  at say   4″.    But then you measure it 2 hours later and it’s snowing like hell  but  you  only   measure  5 inches.   This could be   the  type a storm which presents real problems with regard to measuring snow amounts correctly.

 

On a sidebar let me point out some problems that exist  with the forecasts that I see from NWS.  Now  I hope this does not come across as a NWS  Bash…  because that is not what it is intended as .  I have gotten a lot of emails and face book postings regarding the forecast for southwest Virginia especially in and around Roanoke  and Lynchburg.  The problem is that the official forecast from NWS is correct.  Roanoke for example is under a winter storm warning for   at LEAST   4-8 inches of snows..  and  the   term  ” at least” implies   it could be little more than that for Roanoke.  That is a GOOD forecast.

 

BUT some of the NWS sites however do not show that.  As of 5:00  or 6:00 PM  Saturuay …after the winter storm warnings have been issued by the Roanoke/ Blacksburg office …other web sites was still showing this.

As you can see this forecast so calls for 2 to 4 inches.

Many TV and radio stations including some of the weekend idiot weather people in southwest Virginia apparently did not know about this confusion.  So they been telling their viewers winter storm warnings for Roanoke  with 2 to 4 inches of snow.  This of course makes no sense since the criteria for winter storm warning in Roanoke and southwest region VA is more than 4 inches of snow.  I do not know what the problem is but I do know that this sort a communication breakdown is very bad news for professional meteorologist everywhere and for TV and NWS people as well.  You cannot  have one end of the body not knowing what the other end of the body is doing…  This needs to be fixed  right away.

 

Second I don’t understand the forecast for Lynchburg.  If you look at the zones here in southwest region VA  you will notice that Lynchburg and counties to the north are not in official winter storm watch are warning…  But counties to the east and southeast ARE in a winter storm watch.  This makes absolutely no sense whatsoever.  In addition all the data even the warmest models show at least 6 inches of snow in the Lynchburg area accumulating and much of the data shows 10 or 11 or 12 inches.  Now you could argue that Lynchburg is not to see that would snow.  But how then do you argue that areas to the east which were largely would be a little warmer  — areas such as farmville and Prince Edward county   are in a  winter storm watch?  I sure hope that is fixed soon because that is a busted forecast waiting to happen.

 

 

2230  EST  12 FEB  2012… STARDATE  201202.12

 

For most of this winter’s been pretty meager pickings if you are a winter weather or snow lover here in the Eastern CONUS region and if you are south of DC it’s been really slim pickings. The arctic cold front and the thunder snow and squall line which came to one Saturday certainly was exciting. I personally have not experienced under snow over 20 years… and I consider thunder SNOW o be better than cheap sex.

I made a comment on Saturday afternoon about the thunder snow and the snow squall on the FB page which I subsequently removed because it was not being taken the right way. The potential for a significant East Coast event FEB 11-12 I started referring to back on JAN 28. At first I was quite bullish on the system and thought it had the potential to bring a major snowstorm too much of the Middle Atlantic and New England coastal areas.

That did not happen.
So in one sense you could argue ...”well DT you sort a Busted on the long range forecast regarding the system“.     I would argue however that to make such a judgment shows that the person making that judgment is probably an idiot.     It is not that the assessment is wrong per se since there was no major snowstorm on the East Coast February 11-12.     The problem is that given the understanding of  weather and what can or cannot be forecasted with any sort of accuracy… it is not reasonable to expect a forecast from 14 days out to have the same accuracy as a forecast 2 days from now.    Given that my focus on the potential for a significant East Coast storm February 11 -12 …started at the end of January I think it was a pretty good forecast.

To be sure the GFS model is forecasting an East Coast winter storm of some type for another every three of four days.   But most of those events simply disappear are never come close to developing.   With respect to the February 11 Low… all one has to do is look at the satellite pictures and the surface maps from Saturday morning to see how close this system was to dropping massive amounts of snow up and down the East Coast.    The major costal storm DID develop but it also developed too far off to the east.      But it was a very close run thing and given the forecast was made 2 weeks out… I think it was a pretty good call.

In the short range –with regard to the Saturday event and the thunder snow and arctic front squall line– my view was that I don’t believe the local weather media in the Richmond area was giving enough impact or focus to the arctic front.    Once we reach the short range forecast time frame of this event – FEB 9 and 10 — I repeatedly emphasized that the main impact of this whole system was not going to be the coastal storm for Virginia and Maryland but would probably be the arctic cold front with the potential for heavy snow squalls and a possible flash freeze with the arctic front arrival.

The flash freeze of course did not happen for most areas but the snow squalls did and as we all know there was thunderstorms in the snow squalls! From my point of view… and this is just my opinion… saying something like ” we might see some snow showers with a cold front this afternoon when it arrives”… is technically OK but it’s not really an accurate forecast. And if you are going to go on air during the evening news and explained everybody what thunderstorm is and how it forms then it seems to me that that expertise could of been applied to emphasizing the potential for heavy snow squalls with a cold front arrival.

I know that some think that I am     “bashing”    other Meteorologists. I don’t think I am doing that but I guess it comes across that way. My goal here is to focus more on getting the forecast information out in a better way without destroying the signs of meteorology through a lot of tabloid hype and meteorological bullshit.

Several years ago there was some interesting research done about how the general public view meteorologists.  One of the things they found out is that while every body has their own “favorite” weather person or meteorologist that they listen to read or watch ( or some combination there of )… when the weather forecast goes bad the general public as a tendancy of thinking that all meteorologists either made the same or similar type a forecast or that they ALL busted.    I am not really sure why this is the case. For example if you take your car to the mechanic but the mechanic cannot figure out what is wrong with your car… very few people in the general public assume that all car mechanics are as bad as the one you are using. No one assumes all Car mechanics are of the same skill. And this is all the case with regard to how the general public views other professionals such as attorneys or doctors.    WHY  the general public has a different view about Meteorologists I dont know…. though I have some theories.

This is a kind of a pet peeve with me… but on the other hand it also helps me with my business in the grain and energy markets. Because there is so much bad medium and extended range forecasting going on out there and these inept forecasters seem to get a tremendous amount of publicity… When they come across my stuff many of these individuals are well… a little shocked.
For example my initial forecast for prolonged periods severe cold in Europe was made back in Mid January. At the time I dont think anyone else was calling for this sort of severe or prolonged cold ( but I coud be wrong about that…)

Or when it came to the debate about what was going to happen in February 2012 in the eastern CONUS… I opted for a short duration interval of 1 to 2 weeks of seasonally cold temperatures …nothing too severe… that would be over by the middle the month. Yet those forecasting a “Fabulous February” with temperatures dropping to zero in Boston and Chicago are continuing to bang the drum about how impressive week old the second half of February and March 2012 are going to be over portions of the eastern U.S.
Back in the early portion a January it look like that the pattern was getting ready to undergo a significant change. I had made several posts here on the web site and on the FB page… about how it looked like the jet stream is going to go undergo a significant amplification over the Bering sea into the North Pole region which would force all sorts of changes with regard to the +AO and – NAO. However by mid January it became obvious that the models were wrong and that the pattern was going to develop and a vastly different way.   It happens.

But you do NOT  keep holding onto the idea that severe cold is coming if the pattern has not changed.    If XYZ are causing the mild snowless winter pattern over the eastern CONUS…. and you forecast XYZ to change to ABC… well that’s great. But if ABC never shows up and the pattern does not change… then give up on the cold scenario already. Otherwise it looks like you don’t know what to doing or you are trying to BS folks so they hang on for another month while you rip them off.
Now lets focus a little bit on the potential for this event on February 19-20. First I am not YET committed to this event happening. Right now this threat is just a possibility. A THREAT… No more… Does that sound wishy washy?

Too friggin bad. As I said before… You don’t get extra points and you don’t win the game by making the first outrageously bad or stupid forecasts that you can. This is been a tough winter and it’s not been the same as the last two winters where it was easy to see major snowstorm events coming 5…6… and 7 days out. Whatever happens or does not happen over the Middle Atlantic areas on February 19-20… the fact remains that once this event or threat is gone… the last 10 days of FEB for much of the East Coast will feature more above normal temperatures. Perhaps it may mean the end of winter for much of the eastern CONUS …. except for New England .

The   FIRST  KEY POINT  we have to focus on is the system which tracks up through the Midwest and into New England on February 17. That system will bring rain and mild temperatures to the East coast but once it moves up into southeastern Canada most of the model data shows the system stalling over Maine and or southeastern Canada… a feature which I call the “50/50 Low”. This in turn allows for cold air to come pouring southward out of Canada across the Great Lakes and into the Ohio Valley and the Middle Atlantic states.    If there is NO “50/50 Low”…. then nothing is going to happen on February 19 and 20 with regard to any sort of wintry weather on the Middle Atlantic Coast.
The SECOND   KEY POINT    has to do  with the southern shortwave or piece of energy itself.   Right now the system of course is way out in the Pacific Ocean and the weather models are guessing or estimating how strong or weak this feature may be.     A much stronger system coming through California and the southwestern states and the southern jet stream would of course increase the chances of a significant Low pressure area forming on the Southeast U.S. Coast February 19 .    But there  is no guarantee that is going to happen — the model data could be wrong and this system coming in from the Pacific on the southern jet stream could be quite weak.

THIRD if the 50 /50 Low is too strong or too far south then the southern short wave energy DOIES get crushed or supressed and NOTHING happens except for some rain over TX LA MS AL SC and GA.

When one is faced with this much uncertainty you have to walk a fine line.   At this   point   when faced with this sort of  uncertainty what  I try to do is set of some deadlines  or    some benchmarks.    Most of the answers for the potential   threat  or  mystery regarding February 19 – 20 will probably begin to show up around February 16 -17.     By that time I will have a pretty good idea about how strong the southern shortwave will actually be…   and  most of the Model data will have a pretty good idea of how strong the 50 50 Low will become and where its position is going to setup.

 

1100  4 FEB   2012   … STARDATE  201202.04

 

The extreme winter pattern that has developed over Europe is locked in position and shows absolutely no sign of breaking over next 7 to 10 days.  Complicating this is an development of a prolonged period of extreme winter weather ….a real historic old timers massive BLIZZARD…   over Southern Europe which is going to continue for another three days.  This is just exceptional weather and one that is meteorologically  extremely significant and a very good learning experience for anybody wishing to understand the nuances of European WINTER  weather.

What makes this extreme winter weather  in Europe  even more significant  is that the  atmosphere has responded to the arctic blast and a deep trough   in the Jet stream over central and Eastern Europe …by building a equally strong  Ridge  over the Azores and Spain.  This massive Ridge is  BLOCKING the deep trough over central and Eastern Europe and Western Russia/  Ukraine  from moving   west .   And this includes the 1060 mb  massive  Arctic HIGH over  NW Russia .   There  is  literally NO place for the Deep trough in the Jet stream   with  the  deep arctic cold  or the center of the massive  HIGH over Northwest Russia ….to move .   In other wirds  the arctic  cold    has No  place to   drain or  “spread ” out  like  it  does in the North America  when  Canadian arctic HIGH pressure systems dropped out of Canada and move towards the VA  or Texas .    Instead  it just sits  there   and it’s colder and colder as more and more mass of snow continues to fall.

This image shows the temperatures from yesterday afternoon on February 3 and this morning February 4.  Remember these numbers are in Celsius NOT Fahrenheit…  But there are plenty of temperature converters  you can access through Google to convert them if you cannot do the mass in your head.  -18c   is    ZERO degrees F   …-10C  =14F

As you can see most of Southern Germany was at or below zero as was all Poland.  There were several locations in the western and Central Ukraine as well as Belarus which dropped  down to an astounding  -33c this morning.  And many locations on the afternoon of February 3 in France   (of all places)   did not break  32 degrees  F.   Most of Germany saw max temps in the teens and single digits as the western  Poland  Austria and Hungary.   Many locations in the Ukraine and Belarus did not get above 04 Max temperatures yesterday and if you look at the readings in the the Balkans even south of the Danube their locations which did not get above 0  degrees   F  !!!

This image shows the European and Asian temperature anomalies from last night.  The BOTTOM  map shows the actual  850 mb  temps and you can see how impressive the cold most of Europe is…   while the  TOP map shows the temperature anomalies relative to normal and the dark purple   and violet colors s show the extreme anomalies over Western Russia  …eastern …central… and now Western Europe.

The morning satellite picture shows a massive clouds swirl covering southeastern Europe.  There  is  widespread heavy snow and high winds and now blasting that crap out of most of the Balkans and the Western Ukraine.

The surface  map from overnight tells the reasons WHY  quite nicely…  This is from the European model and we can see that last night there was a moderately strong area of   LOW pressure over Southern Italy…  and   the Large arctic HIGH of 1059  MB over Northwest Russia near Saint Petersburg.  If you look of the BLACK  Lines which are the Isoabrs … you can see that the arctic HIGH  pressure extends all the way into France and Eastern Spain.  The interaction between the surface low  of 1002 MB  and the   1059 HIGH is producing strong east winds across the Balkans feeding the moisture into the elevated train and producing massive  snow falls this morning on the surface maps and reports.

If you take a look of the RED lines …which of the jet stream configurations…  you will notice that there is a Upper Low associated with the surface Low over Corsica and Sardinia  -   which I have highlighted in darker GREEN.   But there is a second ULL over   Poland  and the   western Baltic  Sea….  which is going to get pulled into the big Low over the Mediterranean over the next three days and produce ANOTHER   blizzard .

Here we can see that on the European Model   valid  for 72 hours from now.  The Low that was over Italy is  now  over Greece and it is Much  deeper..995 MB.   What has happened here is that the Low over Italy has strengthened as the Upper Low over Poland has been pulled into the southern  Upper Low.   This process is known as the Fujiwara effect  and while it doesn’t happen very often at the surface it does happen more commonly at the upper levels the atmosphere.

Even more impressive is the pressure gradient!!!!    The 1061 massive    Arctic HIGH  is still there  and it has moved at all…  while this 995 Low is trying to move into the Bulgaria and Romania ans from Greece.  Of course it can’t but the interaction between them is producing a lot more Black Lines an extremely strong winds across all of southeastern Europe and into the western half of the Ukraine.  Also  keep in Mind the  blizzard is still raging past 72 hours!!!!

Also take a look at what’s going on over Spain   …the Azores and the United Kingdom.  The ridge in the Jet stream   there has continued to expand and push towards Iceland and the west coast of Norway.  Keep in mind the  Teleconnection  here…  This massive  Azores  Ridge means that the system over the Balkans can become very strong and deep and also ensures a prolonged extremely heavy snow event because neither the arctic high or the deep low over Greece can move.

This next image shows the GFS snowfall  forecast for the next 72 hours and most of the Balkans and Western Ukraine are going to disappear under a blanket of 2 to 3 feet of snow because of the current heavy snow falling over the region….  And the 2nd massive blizzard which is going to start Sunday.

Finally this Last image shows that changes snow cover for Europe over the next eight days.  The image on the left is based upon the snowfall as of this morning … February 4…  The image on the right based upon the model data eight days some now February 12.   These maps  speak for themselves….

 

WOW.. just    wow…

 

1945  EST  27  JAN 2012… STARDATE  201201.27

 

Did you ever have one of those days where no matter how hard you try the one thing you wanna get to the just can’t seem to get to or complete? This is one of those days. I’ve been trying to complete this website update for 6 hours…since 2pm … and every time I attempt to finish it some useless human being others me or the phones I have to stop what I am doing …. or pick up someone. A very frustrating afternoon because there is a lot to say and I’m not going to take any prisoners in saying it and I don’t give a crap whose toes or feelings I hurt.

There are a lot of weather nuts  out there… ranging  the serious weather hobbyists    to it  lowest grade or lowest form:    the weather weenie.    If you are a winter weather lover like I am you always WANT  to get excited about the big snowstorms and the big cold pattern. Certainly I could produce a lot more business for my website and for the FACEBOOK  page by banging the    drum constantly about cold patterns which never show up.   But that is NOT what WXRISK.COM is all about.   As I  have stated many times before  ..  MY  inter forecast for Winter 2011-12   ( like most others) was disastrously wrong. This is the fifth time and I said that statement about my forecast in the past month yet many weather weenies out there seem to have this perception that I am suggesting my winter forecast was very good.

The point is that the last two winters have been very good for WXRISK.COM    . But the reason why I was bullish and aggressive with a cold and the snow winter patterns over the last two winters for the central and Eastern CONUS is because the patterns were.  I  wasn’t being Bullish on cold and snow to gain religious followers or to have snow nuts fall in love with me.

The purpose of practicing science and in particular the science of meteorology is to learn from the mistakes. My winter forecast was wrong and I have discovered –I believe– to be the synoptic reason why the pattern did not develop the way I thought it might. I stated those reasons in the last entry   GOTTERDAMMERUNG…

Strangely enough all this arguing back and forth has happened before.   Some recall that 10 years ago the winter of 2001-2 was also  forecasted to be a very cold and or snowy winter for much of the central and eastern CONUS. Back then WXRISK.COM was just starting out…  But I  got caught up in the consensus forecasting  thing and  went  for  a colder than normal and at least normal snow winter for the central and eastern CONUS   . Instead that winter turned out to be one of the warmest and least snow east on record!

I distinctly remember speaking on my new cell phone with other leading private meteorologists in various firms and energy companies. And the debate was going back and forth — there are no chat rooms back then– about how the NAO is going negative and that the whole pattern is eventually going to change.    ”VODKA cold”    was the term that everybody through around and used… Some use that term jokingly… some that term semi seriously and some very seriously.

And   the thing is   time after time the weather models constantly forecasted colder outbreaks of significant size and scale. And every few days of cold air patterns or outbreaks would be delayed until next week or 10 days some now.

Some of you may not remember but I am sure a lot of longtime whether hobbyists and fanatics and professional meteorologists do.    To be sure there were some cold days during that winter . But the massive pattern flipped or reversal that many forecasted or was hoping to occur … never happened .

WHY?      What can we learn about that winter    od 2001-02  which could tell us something about large scale patterns so that in the future when we see the same pattern we know not to fall for the same hype.

To a large degree  the  2001-02  Winter  Forecast  Busts  were caused  by    everyone looking at JUST  the  CPC  NAO   Indexes   or the EPO   or the AO.   But  NE or  Midwest snowstorms do NOT happen  because of the  Graph line from  a chart  from CPC.    For  Example    a Ridge or Block  over the  UK does  technically count as  “-NAO”  pattern but for    NE  US Snowstorms    having a  Ridge or Block  at 500 MB over the UK  is the Kiss of  death.

This first map is the 500 MB from December 14, 2001. Again I have highlighted the map so you can see the features I am talking about.

What you can quickly observe on this map is that the PV — polar vortex –is centered north of Alaska on the Asian side of the Arctic circle which is    EXACTLY   where the PV   stayed all  Winter back in 2001-02.

This next image is from the current winter and we can see two maps – 6 NOV 2011 and 7 JAN 2012. And clearly the overpowering feature on these maps is the persistent deep vortex centered over Alaska the Bering sea far eastern Siberia then or the east Asian side of the arctic circle.

Next here is the image from 19 January 2012…. And lo and behold what do we see ??? The enormous PV still centered over Alaska and the Bering sea!!. Its massive its deep and its huge and it’s blocking all the cold air on the wrong side of the world so that there is simply no sustained colder source in North America.

Over the past several days however there has been increasing signals from SOME weather Models of a massive historic pattern reversal with all sorts a severe arctic cold rapidly overrunning the entire eastern CONUS and all sorts of fabulous looking patterns that support snow storms.

Let me be clear about this.    Despite what you may have heard/ read  from other sources  that  may  be just trying to sell you  product and subscriptions… most of   drive for  Much colder / snowier  feb 2012  is being driven  by the GFS model. The European model   as well as  the GFS and the European ENSEMBLES are not nearly as bullish are not nearly as extreme as the operational GFS.

THE 12z GFS JAN 27….

Let’s take a look and see how and why the operational GFS has been showing this  and why  it probably will continue to be out to lunch for several days… and why the extreme solution of this model is unlikely to verify.

This image is the 120 hr 500 mb map… VALID for FEB1.   We can see that the NAO is strongly positive     ( note the closed 500 low OVER Greenland )      but we can also see north of Alaska on the top upper left of the map the age of the Polar vortex.   There is a shortwave or a piece of energy in the southern jet stream over New Mexico which is beginning to develop.

In this next image at 156 hrs OR FEB 2 … We see the northern branch beginning to merge with that system over the Mexico and a fairly deep trough trying to develop over the Eastern US     . But the arctic air hasNOT   yet reached the East Coast so the Low pressure area that develops over the SE coast ridge up the front produces rain across the Middle Atlantic states and into the big cities of Ide 95.     I got several emails today about the GFS forecasting a snowstorm on February 2 for the northeast… But as you can see the model data from the GFS does not show that at all.

This next image we can see the GFS at DAY8 or 192 hrs.   The   northern Jet stream has   continued to dig out  a   deep trough  that covers much of the Midwest and Deep South.     There appears to be some sort of  surface Low pressure area developing on or off the Southeast US. Coast..    And we have a nice looking 50/50 low off the Canadian maritime provinces.      But more importantly the model still shows the large polar vortex (PV) on the very top upper left of the map.

Remember folks that after 192 hours the model resolution of the GFS shifts or expands dramatically. The cause of this model truncation within the GFS… The model has developed a reputation for coming up with really wacky goofy solutions

We can see a good example of that at 240 hours.  For some reason the  GFS  at 240 hrs  has  grabbed the Polar vortex that was to the north of the northern side of Alaska and pulled it hundreds of miles for the south  in  a very short period of time— into southern Hudson’s Bay Canada.      This solution is well preposterous. It’s absurd.     The pattern is very impressive looking and nearly ideal or textbook for the development of a major East Coast winter storm. It’s just not likely to happen.

We see more of the same sort of crap at 300 hrs … By which time the model has completely lost it’s mind.    Do you really think the Polar vortex is going to be centered over Montreal Canada on February 8??? 

REALLY???

This solution is so extreme and so laughable that  the 12z GFS ensemble is totally against this solution. It keeps   the   heart of the Polar Vortex   STILL well to the north of Alaska on the Asian side of the Arctic circle and a secondary weaker extension of the vortex swing through Baffin island and northern Hudson’s bay and Labrador.

 

  

What the GFS ENSEMBLE is telling us is a fairly deep trough along the East Coast that will bring in some decent cold air for several days. But because there is nothing to lock the trough in position over the eastern U.S. it will slide off the coast and as it does so the NAO will turn strongly positive.

This next image is from January 7, 2002. And we see the large PV extending across the north slope of Alaska into far North Central Canada across the arctic region but not really moving into any portion of central and Eastern Canada.

At the time the weather models were developing a significant trough over the eastern U.S. And talked about the potential of a significant pattern change coming in the days after January 8 2002.

Amazingly enough this 500 map from 7 JAN 2002 is darn close to identical to what the 192 DAY 8 GFS model showed today.     The shape of the trough over the eastern U.S. back in 2002 is identical to what the data eight GFS model looks like. The attempt by the Polar vortex to move across Northern Canada 7 JAN 2002… Very similar to what the model is showing for next week. And just like back in 2002 in the first week in January were a lot of meteorologists fought that this was going to be the beginning of the big pattern change… we see the same sort of thing going on here in January 2012.

 

 

THE 12Z JAN 27 EUROPEAN Model.

This FIRST image is actually from the early morning or 0z European model run of JAN 27 … VALID FEB 3 and FEB 7 . We can clearly see the model showing the huge massive Polar Vortex on the Asian side of the arctic circle and it is nowhere near the northern hemisphere.      Yes we do have a strong ridge on the West Coast and yes we do have a deep trough over the East Coast (+PNA) but the Arctic 0scillation (AO) is still VERY positive because it is very intense … It has lots of lines around it and it’s located over the arctic region.

 

 

There is a little extension or trough coming off the arctic oscillation moving through northeastern Canada at Day 10. Once that features swings eastward into Greenland at Day 11… the NAO turns strongly positive.

How was is different from anything we’ve seen so far this winter??    Except for the brief transitory trough over the eastern CONUS … It is the same pattern!

Here is the operational European from 12z JAN 27… DAY 10….valid JAN 27.     It seems to look to be a very promising and very winter like pattern developing. There’s a nice ridge      on the West Coast we appear to have some sort of block developing over East Central Canada which would be ideal… Cold air appears to be coming southward.

 

But again if we take a look at the European ensemble we see a very different story. The ensemble still keeps the huge vortex centered over Siberia and the Asian side of the arctic circle and that is just the wrong position to get sustained cold winter pattern over any portion of the central and eastern CONUS. It is strikingly similar to the problem we had in the winter of 2001-02…

 

Finally let me be absolutely clear about this.    The first week of February will probably feature some cold temperatures some of the cold air might be kind of impressive for a few days. As I said last update … I am not in any way ruling out the possibility of a significant snow for at least some portion of northeast U.S. And I have not EVER said ” no more cold “.

But I see nothing at the convince me that the pattern is going to change because just like in the Winter 2001-02 The PV remains in the wrong position and there vast majority of the model data keeps the Polar vortex in that position on the wrong side of the globe.

 

24 JAN 1030  EST     STARDATE    201201.24

 

There  is a famous scene and photograph from world war two where field Marshal Walter Model is talking to Hitler about the options left in the  Battle of the  Bulge   (a.k.a.   The Ardennes Offensive).  And in that conference   Model says to   Hitler…

” We must  face  the   facts   squarely  mein Furhrer …we   cannot force our way to the  Muese River. It is over”

That’s where  we  are right now.  Like the Ardennes Winter offensive of December 1944 …the cold weather or winter counteroffensive of 2012  is in serious trouble and is likely headed for total collapse and failure .    With the  Battle of the Bulge there are several important reasons for this–  the initial reaction of the American troops   along the   Our  River   and Elsenborn Ridge…  the inability to take   the key  town/ road junctions of  St Vith  until DEC 21  and  Bastogne which was  never  taken…  Just to name a few  reasons.

With regard to this particular winter   –or non winter depending on your point of view  –    the problems remain immense and the model depiction of how the pattern is going to evolve over the next 10 days has been really bad.    The   various    weather models  keep forecasting these sorts of significant developments of what the pattern is going to look several days down the road .   Yet  when that time  arrives and we compare the actual atmosphere to the forecast from six or eight days ago we see huge discrepancies .

Therefore if you are hoping  for…or anticipating a significant change in the overall pattern across North America and/ or the northern hemisphere which will bring about a stormy  and or colder  pattern for the eastern  CONUS…  well   you are in trouble.  It’s not going to happen . 

There  still remain  a decent possibility of a significant winter storm at some point in February or March for the eastern U.S. and especially the East Coast.  But in terms of a prolonged pattern    flip  or change?   NO. 

In the last discussion I wrote   (  BIG BERTHA   and the BUTT   SISTERS)     I tried to walk a fine line between optimism and reality.  There have been several false signals  given off by both the European and the GFS models during the past several weeks which seem to be indicating the pattern was about the  switch.  But I   also emphasized that despite repeated attempts by various models to accurately forecast  the AO and the NAO   to go negative….  In every case the models have turn out to be disastrously wrong.  Only twice since the beginning of autumn has  the AO and the  NAO  dropped into negative territory but that is not what we seen from the various weather models time after time after time over the past several weeks.

 

There is simply no other  way to say this.    The GFS  European and Canadian models…  Both with respect to the operational and  the ensemble  — have been  wrong.  As an extremely wrong.     As in  ” without a clue”.

Invariably   when  the models begin to see that things are not turning out as earlier forecasted they come up with a new solution after adjusting the pattern and delaying the cold.

For example  this image compares  the  European   Model / ensemble  from JAN 18  valid day 6…   to  TODAY  Jan 24.   

A quick glance would show that the day 6 European model has verified pretty well when compared to what the atmosphere actual looks like over the northern hemisphere today January 24.  But there is an important difference and that has to do with the key feature I talked about on January 18… which was the development of   New   Vortex over the Sea of Japan.  It was this feature on the  JAN18   European model at day6  that  was  suppose  to start  the entire pattern change.  However if we look at the current image  we see this   Vortex  is  NOT anywhere near the Sea of Japan…  It over the north side of Siberia almost in the arctic regions.

This has huge implications for the entire pattern.

Indeed  if we look at the   European model  ensemble   from JAN18   valid  at day 10…  And compare it to the    JAN  24   0z  European model for   JAN 28-29 … The differences are quite significant.

The   European  ensemble   at day  10  from  Jan 18… valid for the 28th …  Showed a very large powerful new vortex  centered  over the Sea of Japan.  The updated version of the European  model    valid for the 29th of January does NOT  show that  this feature at all!  There is   NO  deep close 500 low anywhere near the Sea of Japan ….so the entire pattern is fundamentally changed and the development of  the colder wintry pattern for North America does not exist.   Instead we have of new deep vortex over the north side of Alaska which is where is been for most of the winter and is the proverbial kiss of death for getting any sort of sustained cold winter patterns in the eastern half of the U.S.

Its Over.

Looking at day 10… valid FEB 3  …  We see more the same sort of thing.  The   PV  is centered over the western side of the arctic region barely reaching into the western hemisphere.  All the truly cold air is located on the Pacific side of the arctic circle not on the Canadian side.  This is simply the wrong location   for the PV  to be located IF you are trying to get the pattern to change over the eastern half of North America.

 

What a god awful nightmare…  If you like a winter weather in the eastern U.S.

Even if we try and project or hold for something to change down the road we  run into problems.  The general trend of the Arctic Oscillation   ( the  AO)  is moving back towards a neutral and is no longer dropping into the negative territory.   WHY?   Because the PV that was in the gulf Alaska and heelped  bring about the Seattle and Pacific Northwest snow and ice storm did  NOT move   east into western or Central Canada  ( like the Models    forecasted).     Instead it has reformed on the north side of Alaska where it  has  been for most of this winter…  which really is  + AO position.

Even the    negative trend in the NAO has halted and  the GFS  ensemble    show the NAO   levelling off at Neutral.     Again go back and reread what the model data and the trends are showing on January 18.     This was not   the way things supposed to be evolving .

 

 

And if you are a professional meteorologist and you cannot see this   then   you are  trying   to sell somebody something  or  you are  delusional.

And really  the pattern does not change much  no matter  what we look at with respect to any particular model.  For example here is the day 10 GFS  — the 0z run–   ensmeble mean.  We have a moderate sized trough in the east a little bit of a ridge  on the West Coast…  which  by the way  the European model does not have…  The dark purple areas clearly show  2  PVs  located on the Pacific side of the arctic circle .  Another words although really serious cold air is located on the long side of the world to get a sustained cold pattern to develop in North America

 

  *****     It is hard to understate how   damaging it is with respect to the pattern the evolving into  a  cold one over the eastern half of North America and the U.S.  with a huge vortex of centered over Alaska or snow on the western side of the arctic circle.  ****

If we look at say the  8-14 day   reforecast model from  ESRL …  The pink areas clearly show some sort of  -NAO   but the pronounced and very noticeable dark Blue  areas over Northern Alaska is  STILL   there and shows no signs of moving.  What this feature does is essentially cause the Pacific jet to become very strong…  And therefore  there   can be no  sort  of  pattern a amplification over the  eastern pacific / west coast of North America   ( NO +PNA  and distinct tendency to get a – PNA).

 

One last  note: if we do  in fact keep  and  hold   the -NAO   into   a good portion of   FEB … then  it still  might  be possible to  get  a surprise a snowstorm for the  northeast US  of the some magnitude.  By surprise I am talking about relative terms — inother words it might be something that 10 days out looks like nothing and then in the last 72 hours things change into a moderate or significant snowstorm for the northeast U.S.    In order get something like this to happen there would have to be some sort of pattern amplification occurring on the West Coast   – a ridge over    western US / Canada–   that would cause a  short wave to  dig much further to the south resulting in some sort a cyclogenesis over the southeast U.S.

 

 

 

 

 

2330  EST  18 JAN   …. STARDATE   201201.18

I love forecasting snowstorms  in the Pacific Northwest.    It doesn’t happen very often  but   when it does  happen… is really quite interesting and very different from what we get in the northeast US.  Back in the winter of 2006-7  or  2007-8    a really great pattern set up for the Pacific Northwest around Christmas time and that  region  got   hammered with significant snow and ice storms –even  Christmas Day in Seattle and Portland and much of the northwest.  My experience over the past few decades has been that if you are not getting the Pacific Northwest right   –the West Coast and general but especially the Pacific Northwest– than the rest   of your  forecast is going to suck Moose  balls.

I am not going to spend a lot of time talking about the moderate snow event which is likely to move through portions of the upper Midwest the Great Lakes and the interior of the Northeast US  on JAN  20-21.  In fact if this was a regular winter this should be a pretty ordinary event and not get any intention are all.  Essentially what happens is that a wave of   Low pressure develops on the front as the large cold high over the north these slides off  the Maine  coast.  The Low tracks   into  WVA  then    through PA.  It’s a pretty weak system and a dozen have a lot of moisture with it and it’s moving pretty fast.  Still for the snow lovers  in the NE…  some snow for folks in the Northeast is better  than NO snow.
Now I know many of you in the eastern U.S. and especially in the northeast are probably shrieking or thinking    “Hey   DT  you  ignorant geek … who  Gives  a rat ass  about  the  the   Pacific Northwest?…”     If you are asking that question or thinking those thoughts…  then you’ve got a problem because you  are missing something really important about this particular snowstorm.    Not so much  about   the Pacific NW   snowstorm  per se… but  what is causing it …the implications for the entire pattern as  we  move into  February.  So pay attention there   sparky and let me tell you how Big Bertha  and her huge Butt plays into this whole thing .
By now I am sure  some of you have heard or read about the potential for significantly different pattern setting up  over  the next two weeks so that February and perhaps March 2012  end up being colder than normal or… at least  the threat or the possibility of it being colder  than normal over the eastern CONUS .    There are strong indications are  this MIGHT     happen but we have to be careful here.  We  have been  down this road a couple times before…  and every time we have gotten close or looks like the pattern is starting to change… it  turns to     Moose  Crap.    So if you have your snow boggles on and you all excited because somebody in Pennsylvania or in New England is telling you that this time it’s really really really gonna happen…  be careful.

 

A word to the wise.  Saying the same thing over and over and over again… or in this case forecasting the pattern change the pattern change the pattern change…  only to see the pattern finally change…  is not REALLY  forecasting weather.   What you are doing is saying the same bullshit  over and over  and over.   In other words if your  forecasting skills in the extended and long range   have been really good  in the last two winters…  But now you seem to have trouble figure out was going to happen and when / IF the pattern change is going to occur…    that  is  probably a clue  you are  doing something wrong.
This first image shows us the long  terms trends  of the NAO and the AO since September. 

 As you can see from the image it is readily apparent  that the NAO and AO have only drop into the negative territory twice since the up SEPT 15 !!!    But more importantly since December there had been a several tries or surges where both the  NAO and the AO have reached the Neutral Line  — which I have  Number as  you can see.   And every case the model data showing the AO or the NAO   would  drop to  negative territory but in every instance  -  EVERY    INSTANCE–      both the  AO and the NAO bounced back up strongly into positive territory and all of the model data turned out to be disastrously wrong.      So again if you’re absolutely certain that the pattern to  turn around  and that it is  going to  turn out  to be a great February and March 2012… BE  CAREFUL.  The trend here is not your friend.  Of course that’s not to say the trend can not be broken but it does need to be respected .

 

 

BIG  BERTHA…
This next image shows the overall pattern back on January 15.   As you can see from the image itself I’ve highlighted the massive explosion in the WPO  as a turn negative and built a huge rage into the Bering sea….  and Alaska…  that expanded all the way into the western and Asian  side of the Arctic circle.   This  explosiove   Ridge developemnt  was caused primarily by the stratospheric warming event.  Also keep in mind that when the models of first detected this development   –  back in late DEC and  early JAN– most of them showed this would lead to a much colder middle and the latter January…  Which as we  all now know…  did NOT  happen.    Instead… the huge Ridge in the Bering sea and the western side of the Arctic circle moved into eastern Siberia.    This in turn allow the polar vortex to move into western Canada and eventually into the Gulf Alaska were it is currently  situated.  It was this very movement of the  PV which is  WHY the arctic air came pouring over the Rockies in the continental divide into the Pacific Northwest and the Seattle Portland metro areas!!!   

         

But more importantly is how the pattern slowly evolves.  This next image shows the  72  hr — 12z  JAN 18  run-   valid  JAN 21.  I  have highlighted the individual disturbances or impulses and Pacific jet stream and you can clearly see the amazingly cold bitter arctic air mass over Northern Canada  that is associated with this  super   positive  AO.    This is one of the reasons why having such a strongly positive arctic oscillation is so bad for those wanting winter storms over the central or eastern CONUS.  As you look at this image    you can  clearly see   that  in this sort of  flow there  is very little way to get that cold air to come southward .

96 HRS ECMWF…  We can see a new development which is a  core  or center of the  PV reemerging or developing over anchorage or in the Gulf of Alaska.  Meanwhile more strong impulse is a batter the West Coast move across the Rockies into the planes bringing in much milder air

 

120 HR  ECMWF   VALID   JAN 23…  In this image I have highlighted the upper air map at 500 MB  and the  SURFACE map.  The piece of energy in the central Plains   develops into a significant winter storm for the Great Lakes which pulls up a lot of warm air into the northeast U.S.  Chicago   COULD have another  significant snowstorm however.   More importantly however it is this buildup of warm air along the East Coast which is driven northward into the high latitudes and forces the Heights to rapidly warm or increase over Eastern Canada.  Sometimes is buildup of warm air and increasing Heights can cause the NAO   to flip especially when it’s followed by several surges of warm air from the eastern U.S. into  eastern and southeastern Canada.

That is exactly what happens over the JAN  24-25-26   time frame.

This  image is a hemispheric shot of the European model at   DAY 6 .. JAN 24 .  I  have highlighted some important features which are occurring at this time over the hemisphere.  The most important  is  feature  #1 which shows a another Ridge exploding northward into the arctic regions from the northern Pacific however this is significantly different than what we saw back on January 14-15.  That ridge   exploded northward over the Bering sea and we did not have a PV  (Polar Vortex)   in the gulf Alaska  which will  likely have   JAN 24-25.     This  Ridge develops over eastern Siberia…  because of the new vortex which forms over the Sea of Japan.  The development of a deep vortex / 500 Low  in the Sea of Japan is  text book teleconnection for a much colder pattern over the eastern U.S.    

 

   ASSUMING   this is correct   the Ridge in Eastern   Siberia will begin to drive the  PV in the gulf Alaska…  to the   east into Western Canada which begins to alter the entire pattern.

At Day 7  JAN 25…  The Great Lakes Low is now over southeastern Canada but it’s still feeding up warm air into southeastern Canada.  However right behind that we see a major trough amplification over the entire Plains  and the Midwest   ( see  THICK  BLACK Line).  This forces another surge of very warm air into the East Coast.    Meanwhile over the West Coast and the eastern  north Pacific   the  Gulf of Alaska  PV is being driven east   while a  ridge is beginning to form off the California Coast.

DAY 8 …    Again I have  matched up  the upper air map at 500 Mb with the surface  map   so YOU  can follow how things develop.  The new  trough over the Mississippi Valley has caused   a surface Low to form over Alabama…  while warm air surges from the Deep south all the way into the Northeast U.S.     Again I cannot stress how important this warm areas with respect to feeding the developing  or  Building   500 Mb heights over  eastern  Canada …  Which in turn brings about the face change in the   NAO.  So even though I know winter weather lovers in the eastern U.S.  will hate these warm temperatures the two serve a purpose! 

In this next image DAY 9 …  We can compare the European vs. the GFS from a hemispheric perspective.  Both models or a remarkably good agreement as  they  BOTH  show the PV in the gulf Alaska…  They both show some sort of Ridge trying to form off the Southern California Coast in the eastern Pacific…  And they both show some sort of building or increasing Heights over Eastern Canada.

By DAY 10   –lets  use the   EURO ENSEMBLE 500 mb maps – the changes are underway big time.  Big Bertha has now left the gulf Alaska…  or rather is leaving the gulf Alaska and sliding into Canada.  It’s doing so because of the developing ridge  over the Bering sea and eastern Siberia.  In addition the Heights are rising rapidly over Eastern Canada and southern Greenland which indicates the possible development of a -NAO.

The 12z GFS  ensemble – JAN 18 run — strongly agrees with this overall development of the pattern.  In this image we can see the 6-10 day    500 MB  height  CHANGES.  This is useful in showing us where things are trending..  We can see a very strong negative anomaly over the gulf Alaska  which is the strong Polar Vortex.         But we can also see the Heights beginning to increase over Eastern Canada.

Looking at the same product but now for the 11 to 15 day…  We see major changes.  The GFS  ensemble shows the vortex that was in the gulf Alaska  has now shifted east into western or  Central Canada.  The Heights are rapidly building in the Gulf of Alaska and we see increasing Heights over Greenland as part of a  -NAO.

 
If we look at the  12z GFS  ensemble itself   — the 500 mb  mean –  at   DAY10…  We can see a very close match to what the European ensemble model is showing.  Note the strong vortex over the Sea of Japan!     Note the    ridge over   far eastern  Siberia and the Aleutian islands…  And notice the  dark purple the long date and shading extending from North Central Canada down  to NW Ontario Canada.  This tells me that the model is showing the  PV is splitting apart or redeveloping.

312  HR  the 12z   GFS  Ensemble has evolve into a completely different and full blown winter pattern over the north American continent.  As I have highlighted here…  There is a new deep  PV  over the Sea of Japan…  A very strong Ridge e over the Bering sea and  new PV   with 2 centers: one over  far N  central  Canada  and the  otther over  James bay .  If we accept this model as verbatim or being fairly close to the truth…  We now have a raging +PNA  pattern  a   – AO   a  – NAO and the eastern U.S. is now in business for February winter storms.

WHAT CAN GO WRONG? 

This is probably the most important part of the whole discussion given what’s happened this winter.  There are so many things that could go wrong with this sequence of events as shown by the weather models.  But it’s important to do this because you don’t want  get caught up in the mental loop  or  trap of believing that the pattern change HAS  to occur because the weather models say it has to occur.

1) the development of the deep   500 Low that becomes a new polar vortex feature in the Sea of Japan.  If this feature does not develop   THEN the entire pattern change will fall into a pile of  Moose    crap.      It is this feature which causes the Ridge to develop over eastern Siberia and the Bering sea.  If there is no big  500  mb Low  in the sea Japan in the last few days of January then   the ridge  will act  TOTALLY different…  And it will not cause the changes to occur across North America.

2)  this is related to  #1  above.   Suppose the   PV in the Gulf of Alaska it does not move.  Say goodbye to the pattern change.

3)  THE  WARMTH  over the   eastern  US does NOT   reach into   eastern  Canada …  Which in turn would mean a much weaker  -NAO.  Or it might only force the NAO   to go to briefly neutral…  which as I stated at the beginning of this essay  has been the trend all winter long.

 

 

 

 

1500  EST  JAN 21   JAN 2010….   STARDATE  201201.12

 

There is really no other way to say this other then coming out and saying it.    My forecast– my scenario about how the second half the winter was going to evolve –is probably not going to be correct.    I am not going to come out here and tell you that I am going to get the overall 500 MB pattern correct like  whats his name does over at wxbutt .  Wrong is wrong.  I am very likely going to end up being quite wrong with regard to the second half of the winter and how things are going to develop.    There is no point in trying to a blow smoke in your face then tell you the air is clear.  One of the things I have learned from dealing with energy and grain traders over the years is that most of them can handle the idea that your seasonal or monthly forecast is going to turn out to be significantly different or the pattern change you have been forecasting is not going to work out sometimes.    What they don’t like is when someone tries to tell them that Up is Down or that Mild is Cold.   My experience has been that when you do that you will end up losing clients faster than Newt Gingrich’s popularity at a club for growth meeting.

 

What IS important when something like this happens is to figure out what you did wrong and lessons that that can be learned and absorbed for another day and another time.    Over the next 10 days the actual forecast looks pretty easy. First the strong arctic cold front comes through tomorrow…. There may be a clipper low which brings WVA VA NC MD some snow showers on the 15th…. A brief warm up the headm ahead of the next cold front on the 16th and 17th … Followed by another strong arctic front on thr 18th to the 20th.

What I am talking about here is how I anticipated the next 45 to 60 days to develop.    Now some are you are probably already saying    ”hey DT you crazy ignorant bastard… Maybe you are jumping the gun to early and giving up hope. Maybe the pattern will evolve as you thought earlier into it more bullish colder wintry pattern for the central and eastern Conus…”

Maybe. But that is not the way things works with me.

Look… If the pattern ends up turning colder and February and March but in a manner that differs significantly from what I have been talking about over the past 10 days…. It is unethical of me too suddenly assert Hey look at me I got it right after all”.       I dont   DO bullshit.

I don’t mind talking about my successes and I don’t mind talking about my failures.    One of the things that you will find here at WXRISK.COM is that I do both with equal intensity and focus. No matter how good you are … no matter how much on a roll you may be… You will eventually end up being wrong an disastrously wrong.    If you are afraid of being wrong stop forecasting weather and go sell shoes.

When I use to post over at easternus wx then over at American wx one of the issues I’d try to stress is that not all SSW  ( sudden stratospheric warming events)    are the same and they don’t always mean that the pattern is suddenly going to turn significantly colder and or snowier for the central and eastern CONUS.      Sure there is a tendency is that the happened but the correlation is not that strong.   A few years ago there was a pretty strong SSW event– I think it was in winter of 2005-6 — and there was a lot of gleeful anticipation that the SSW event would lead to a turn to a much colder and wintry pattern for the central and eastern CONUS. It did not.     To be sure the pattern DID change but NOT in a way that made a difference for actual weather conditions east of the Mississippi River.   I could make the argument here that the pattern is changing if one looks at the overall large scale features over the northern hemisphere.

But that’s just a disingenuous bull shit argument… and like I said I dont DO bullshit.

When I made the last post back on Jan 9….    I presented this map showing how the SSW –sudden stratospheric warming– was going to cause the jet stream to develop  a  massive Ridge over the northern Pacific that would expand through the Bering sea into eastern Siberia and Western Alaska… and reaching into the Arctic regions.

But at the time I also stated quite clearly that this sort   of  pattern development  is not a great pattern for the Midwest and East coast:    the development of the 500 MB ridge ( aka the -WPO)    that pushes into the arctic region often causes a equally strong negative 500 mb anomaly   (  A TROUGH!!)   — to form over western or southwestern Canada and Pacific Northwest  …. which is    really  a -PNA  .    My entire argument or forecast for the second half of the winter was premised on the idea that the RIDGE over the Bering sea would continue to drive into the arctic circle ( where it would becomne a Block) moving over or close to the north pole regions and expanding into northern Greenland. This in turn would force the NAO to move from very positive to Neutral to Negative and the combination of both of these features — the Block over the arctic regions and the developing positive 500 mb heights over Greenland– would force the entire Polar Vortex out of the arctic regions ( +AO) south into central Canada (-AO). Well that’s what I was thinking anyway.

However in the last update I also listed  under     the   “WHAT COULD WRONG”   department … that the developing Ridge over the Bering sea   might retrograde
( move west)    back into eastern Siberia…. and that such a  development    would of course destroyed my entire scenario.

BINGO.

It’s pretty clear from the last several model runs that yes the Bering Sea Ridge   IS  going  separate itself from the main flow   and will  become a block over the western arctic regions. But it  is also quite clear that this  Block  IS  going to move WEST  – not   east  or  Northeast —  west and that this retrogression is going to allow for deep trough / closed 500 mb Low to form in the gulf Alaska in the mean pattern.

Oddly enough the development of deep closed 500 mb Low in the gulf Alaska is identical to what we have been experiencing since the last week of November NOV.    So yes we probably will end up back were  started by the time we reach the last week of January.     Indeed the last few runs of the CF2v2.0 in week 3 and 4 … which had been showing a fairly cold pattern developing now shows a very mild and to January east the Mississippi River.

What  is really interesting is that when the pattern turn into CRAP back  in  mid and late  November it did so because of the development of a large 500 mb Low over eastern Siberia.    This feature was very prominent all maps and I talked about it    often   during NOV 10-DEC 15 period.   Having   big a deep closed 500 MB Low over Siberia is not in itself     the kiss of death per se.    BUT… there was also a large positive 500 MB height anomaly– a FLAT ridge– over the central portions of the North Pacific   and that   made things much worse.

The proximity of these two features fairly close to each other ensure that the Pacific jet velocities at 200 mb and 300 mb would be extremely strong    (at times reaching 200 knots)    and therefore would not be allowed to buckle or amplify.   Very strong jet streams like this are impossible to get to “buckle” or amplify and without that you can’t get a ridge on the West coast of North America.    This time around the stratospheric warming event caused a major amplification of the pattern… over Bering Sea and eastern Siberia!!!    In other words the EXACT same location on the globe. T   he fact that these two events 60 days apart developed in almost exact same location on the globe can not be a coincidence.

Some have speculated that the development of excessively deep heavy snow cover over eastern Siberia in combination with the Asian mountain Torque is the driving force here behind the repeating pattern. But that is a discussion for another day.  Besides if I get into that is gonna end of sound like a bunch of BS…

And like I said… I dont DO bullshit. Wrong is wrong…I am going to be wrong.

The only give saving grace here is that in this new pattern the temperature contrast between say Minneapolis and St. Louis…. between Boston and Richmond Virginia… could at times the quite extreme. I am not yet prepared to completely kill off the entire winter but I would not surprise me at all if this winter ends up being very close to 2001-02 or 1972-73.

0800  EST   9 JAN  2011… STARDATE   201201.9

 

The 6z the operational GFS this morning is developing some sort of coastal storm just after  day 10  for the Northeast US.  The model does not show a huge event but it definitely shows a secondary Low  developing in the arctic air and bringing a moderate to significant snowfall for the northeast U.S.  Mostly to the north a Washington, DC Baltimore area.

I do  NOT   like that solution for number   of  reasons and those reasons actually end up supporting the solution I talked about  over at   HARDCORE–JAN 7post.   To begin with the 6z GFS  ensemble  does NOT   support  the  6z operational GFS .  But more importantly with the GFS to showing is the development of a deep trough over the eastern U.S   day 9-10  as opposed to a broad U shaped trough  from the  European  AND  GFS  ensembles.

In addition  the GFS  develops this  deep  eastern  US trough  by forcing the NAO  to shift for more rapidly into a negative phase .  And that solution if you look at the overall pattern makes no sense.  Eventually I do believe the  NAO  is going to go negative   BUT   as long as the huge  Polar  Vortex  / +AO is still up across northern hudson’s bay and Baffin island …  That was features a large circulation will still keep Heights way below normal over Greenland …  Which of course precludes  a -NAO   development by day 9/ 10 .

Indeed if we take a look at the European model  and european Ensemble…  we see a much more reasonable solution especially given the persistent strength of the Pacific jet stream which has been a major aspect of this winter since the middle of November so far.      The operational European shows the huge block which is developing from the Bering  Sea  into the western half of the arctic region  ( called a  -WPO   by meteorologists and  Climatologists) .  That in turn is forcing  the PV / +AO  slowly southward  and   THAT movement of the  +AO  in turn is forcing the arctic air south in all directions… SOUTHWEST  …  DUE SOUTH  and  SOUTHEAST.    And THAT in turnn is forcing the   STJ  to the south as well.

 

This movement an overall solution to the pattern is strongly supported by  the  European ensemble

   

AND   GFS ensembles…  which all show the  same  sort of thing     day 8-9-10.

 

1210 AM   EST   JAN  4  …. STARDATE    201201.04

Sorry I did not get a chance to pose this update earlier but on January 2 I had sort of a family teenager induced crisis which had to be dealt with. Such is life.
Before we move onto the issue at hand… In case   YOU  did not know there is a pretty serious heat wave and drought underway over much of central eastern and Northern Argentina which grows an awful lot of grain these days– corn and wheat and soybeans as well as some cotton.     This image shows the rainfall for the month of December relative to normal as you can see it’s been pretty bad down there   . But I digress.

Part of the problem with meteorology is that like so many other things … it is also quite susceptible to “groupthink.”     We saw the implications of this with most of the seasonal forecasts during the autumn of 2011. The conventional wisdom was overwhelmingly in favor of it least a normal winter over the central and eastern CONUS or another colder and snowier than normal winter. Of course that turned out to be quite wrong— and this also applies to me.

But now what’ has happened is the pendulum may have swung too far the other way. With the development of some experimental week 3 and 4 models such as the European weeklies and the CFS version2.0 model now available to most energy and grain private sector meteorologists…. there is probably now an over reliance on these experimental models. For example over the past several weeks the European weekly models have consistently showed a prety mild pattern and the European weeklies have for the most part been correct. It has consistently showed +EPO/+AO/+NAO/ -PNA pattern.
However the problem here is that there are significant changes which are now on going across much of the arctic regions which would argue for a break in the persistent mild pattern across North America and Europe.
This next first image shows the overall pattern as of December 23, 2011. Two things are easily discernible on this map… There are two large upper Lows or Polar Vortexes (PV) situated in the western hemisphere. One is located over Greenland and another equally strong and persistent Upper Low is located over Alaska.  These two features produce a +EPO/ -PNA pattern over the west coast of North America which  ensures no flow of cold air into the Conus …. and a +AO/ +NAO which insures no persistent Eastern US trough.   Instead all we have is a ZONAL or west to east flow from the eastern Pacific into the western Atlantic.
In order get the pattern to change these two features HAVE to move. If they stay in their current positions than nothing is going to change with regard to the winter pattern over North America.

 

Here is the current hemispheric analysis from the European model valid 12z JAN 4.

 

Again notice the two big large PVs… one located over Alaska and the other one over Greenland.   BUT… by day 10 Euro model from 12z JAN 3 is showing some significant changes which we can see when we compare   Day 10 map to the 0z  JAN   3 map /    to  the DEC 23 Upper air map.       First note the Large Upper Low that over Alaska has retrograde significantly towards far eastern Siberia.   In addition the European model shows the deep large vortex over Greenland moves east towards the UK and the North Sea.   The movement of both of these features allows the European model to developer Ridge over Western Canada and some sort trough over the eastern U.S.

This is supported by the European ensemble.   Note that here the persistent large upper low over Alaska has retrograted across the Bering sea into far eastern Siberia.   This significant move and of course changes the entire pattern over the eastern Pacific and Western North America.   On the other hand the European ensemble model at day 10 does not move the persistent deep vortex over Greenland .  That feature remains locked in place and it will take something more than normal pattern evolution to and get this super + AO and +NAO to breakdown.

The movement of the large upper low/ PV over Alaska into eastern Siberia allows for a significant ridge to develop over the Bering sea and Alaska in the 11-15 day .    This ridge builds into Alaska and far Western Canada and also ensures that the vortex over eastern Siberia can not change course and move into Alaska.    This sort of change the pattern is SIGNIFICANT when you compare to the pattern of Mid DECEMBER. And this is now supported by the GFS ensemble mean which we can see here.

 

      

We continue to see a slow downward trend in both the phase of the AO and the NAO…. towards a neutral alignment by the middle the month. Again this is a significant change from what we sought in November and December.

Finally in the week 3 and week 4…. the CFS V2.0 Models show a return to a near normal pattern for the last two weeks in January.   As you can see the model is developing a pretty strong deep persistent RIDGE   in the far eastern Pacific just off the California and British Columbia Coast.     In addition the large persistent deep anomaly at 500 mb that has been over Greenland is gone and has actually shifted south into Hudson Bay.    With the overall lower Heights across central and eastern Conus… Temperatures should run cooler than they have been and this is supported by the temperature forecast for North America for week 3 and 4.

 

SUMMARY:…. Clearly the model data is showing significant changes occurring in the arctic regions during the next two or three weeks. Some of this may be due to the impressive stratosphere of warning which is now underway over the entire arctic region. In order to get a very cold and or stormy pattern we need to get that polar vortex out of Northern Hudson Bay were Baffin island and force that feature to shift well to the south. Right now none of the model data is showing that happening… But that doesn’t mean the PV can’t or word drop south.