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The early speculation on winter 2013-14


weathafella

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The more i look into things, 1962-1963 is actually a pretty decent match.  It matches quite well with how ENSO has fared since spring, that winter alow followed an ENSO neutral winter, that winter occurred during the +AMO phase and -PDO phase, and also occurred during a low period of sun spot activity.  

 

1981-1982 was another year I was looking at but doesn't really match all that well with how some things are (that occurred during -AMO/+PDO period and higher sun spot activity.  1981-1982 also occurred during an easterly QBO as opposed to what we have now.  

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1962-63 was very cold from the second week in December to March 1st...It was also one of Europe's coldest winters...The Giants and Packers played in the championship game at the end of the month in single digit temperatures...Not to mention gale winds and a blizzard in Maine...NYC had at least five cold waves with temps 10 degrees or lower ... something like that hasn't happened in 20 years...

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My two analogs are 1962-1963 and 2008-2009 which I'm working with but I'm leaning more towards 2008-2009 as given how the AMO might end up more neutral or perhaps slightly negative this winter which may make way for more of a positive NAO overall which is what occurred in 2008-2009.  Also stratosphere this fall has been more like that of 2008-2009 than 1962-1963.  

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I'd make out with you if we had '08-'09.

 

:lol:

 

I know very little about long-range but from what I have tried working with, it seems like a decent analog.  Matches well with how ENSO has gone this year, it occurred during a +AMO phase, but the AMO actually went slightly negative that winter, and that may happen this winter...there is a cold pocket of SST's south of Greenland that has been strengthening.

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The temps of 1962-1963 and precipitation amounts of 2008-2009 will make your eyes bloodshot in amazement. What I'm talking about is the possibility of Super Clippers. The typical way of delivering several cold snaps of this magnitude are Clippers and Miller B type events. Although, if this winter has traits of an El Nino, then Clippers will be common. Also, remember that the magnitude of cold air could ensure that snow is certain, at least for I-80 going north. If we don't hang on to our current dry regime, then there's a possibility for a few very potent Clippers. That's just my thoughts on the analogues that I observed. If I'm wrong, then you guys can correct me because even though I've been observing weather patterns for over 10 years, I've always learned new things from more knowledgeable people, mainly from this forum. :)

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My two analogs are 1962-1963 and 2008-2009 which I'm working with but I'm leaning more towards 2008-2009 as given how the AMO might end up more neutral or perhaps slightly negative this winter which may make way for more of a positive NAO overall which is what occurred in 2008-2009.  Also stratosphere this fall has been more like that of 2008-2009 than 1962-1963.  

both had snowfall on the ground Christmas morning from a storm almost a week before...other analogs like 1959 and 1961 had deeper snow on the ground Christmas morning...every neutral negative December had a negative AO on average including 2001...

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Interesting!  

year..........AO.....NAO.....PNA

1959......-0.043...+0.44...+0.66

1960......-0.343...+0.06...+1.46

1961......-1.668....-1.48....-1.24

1962......-0.711....-1.32....-0.08

1966......-1.401...+0.72...+0.09

1967......-0.347....-0.45....-0.82

1978......-0.980....-1.57....-0.72

1980......-0.057...+0.78....-0.27

1981......-1.216....-0.02....-0.12

1985......-1.948...+0.22...+1.39

1989......-0.644....-1.15...+0.87

1996......-1.721....-1.41....-1.23

2001......-1.322....-0.83...+0.56

2012......-0.111...+0.17....-1.01

only 1989 and 2001 had all three in our favor and 2001 was the warmest December on record while 1989 was one of the coldest on record...

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year..........AO.....NAO.....PNA

1959......-0.043...+0.44...+0.66

1960......-0.343...+0.06...+1.46

1961......-1.668....-1.48....-1.24

1962......-0.711....-1.32....-0.08

1966......-1.401...+0.72...+0.09

1967......-0.347....-0.45....-0.82

1978......-0.980....-1.57....-0.72

1980......-0.057...+0.78....-0.27

1981......-1.216....-0.02....-0.12

1985......-1.948...+0.22...+1.39

1989......-0.644....-1.15...+0.87

1996......-1.721....-1.41....-1.23

2001......-1.322....-0.83...+0.56

2012......-0.111...+0.17....-1.01

only 1989 and 2001 had all three in our favor and 2001 was the warmest December on record while 1989 was one of the coldest on record...

 

December 2001 is such an interesting case...you wouldn't expect such warmth in the east given the NAO/AO states but it occurred.  I wonder if the stratosphere played a major role in that?  Looking at 50mb temp anomalies, the stratosphere wias cooler than average across the east while the warmth in the stratosphere was out in the west, where the coldest sfc anomalies were

 

nru62F2dFb.png

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December 2001 is such an interesting case...you wouldn't expect such warmth in the east given the NAO/AO states but it occurred.  I wonder if the stratosphere played a major role in that?  Looking at 50mb temp anomalies, the stratosphere wias cooler than average across the east while the warmth in the stratosphere was out in the west, where the coldest sfc anomalies were

 

nru62F2dFb.png

In 2001, the Arctic source region was so extraordinarily warm that the period of blocking sustained the month's unseasonable warmth.

 

Arctic2001_zps05ea0d89.jpg

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In 2001, the Arctic source region was so extraordinarily warm that the period of blocking sustained the month's unseasonable warmth.

 

 

 

 

The EPO was strongly positive in December 2001 despite a -AO/-NAO...therefore it favored a very mild pattern over North America while the blocking favored much colder conditions over Asia and Europe.

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The EPO was strongly positive in December 2001 despite a -AO/-NAO...therefore it favored a very mild pattern over North America while the blocking favored much colder conditions over Asia and Europe.

That probably was one of the reasons the Arctic was so warm. Below are the December 2001 EPO anomalies:

 

2001 12 01   37.46

2001 12 02   18.89

2001 12 03   22.00

2001 12 04  -17.94

2001 12 05   30.72

2001 12 06   80.45

2001 12 07   76.61

2001 12 08   61.62

2001 12 09   35.66

2001 12 10    3.14

2001 12 11    3.21

2001 12 12   57.47

2001 12 13   87.98

2001 12 14  100.91

2001 12 15  131.63

2001 12 16  169.51

2001 12 17  192.80

2001 12 18  181.87

2001 12 19  149.29

2001 12 20  154.54

2001 12 21  172.01

2001 12 22  146.28

2001 12 23  134.93

2001 12 24  149.14

2001 12 25   76.76

2001 12 26   12.37

2001 12 27  -13.04

2001 12 28  -34.67

2001 12 29 -106.38

2001 12 30 -162.36

2001 12 31 -172.05

 

ftp://ftp.cdc.noaa.gov/Public/gbates/teleconn/epo.reanalysis.t10trunc.1948-present.txt

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The EPO was strongly positive in December 2001 despite a -AO/-NAO...therefore it favored a very mild pattern over North America while the blocking favored much colder conditions over Asia and Europe.

Actually, for a good portion of the SE US like Atlanta, the snowfall during the winter of 2001-02 was well above average due to a 4-6" snowfall in early January.

The winter of 2001-2 is also infamous for the extreme cold bias of the GFS (then known as the MRF/AVN). This model was bringing down record cold airmasses on many runs and its cold runs hardly let up through the winter! I still have some of those runs saved. This was largely a result of a major model modification (cooling) that was implemented on 5/15/01 mainly to reduce the number of false tropical cyclones. That goal was reached.

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Actually, for a good portion of the SE US like Atlanta, the snowfall during the winter of 2001-02 was well above average due to a 4-6" snowfall in early January.

The winter of 2001-2 is also infamous for the extreme cold bias of the GFS (then known as the MRF/AVN). This model was bringing down record cold airmasses on many runs and its cold runs hardly let up through the winter! I still have some of those runs saved. This was largely a result of a major model modification (cooling) that was implemented on 5/15/01 mainly to reduce the number of false tropical cyclones. That goal was reached.

 

I recall a huge snowstorm for NC in January 2002...not sure if that was the same system that brought snow to Atlanta.

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That winter was the famous "vodka cold" which was always coming but never did. There was a good snow event over the interior northeast during January.

 

 

We had a pretty good snow event in SNE on December 8, 2001. Biggest of the season for many.

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I recall a huge snowstorm for NC in January 2002...not sure if that was the same system that brought snow to Atlanta.

It is the same one. It fell Jan. 2-3. It singlehandedly resulted in winter snow totals that were well above normal in Atlanta, Raleigh, Columbia, and surrounding areas.

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In 2001, the Arctic source region was so extraordinarily warm that the period of blocking sustained the month's unseasonable warmth.

 

Arctic2001_zps05ea0d89.jpg

 

 

The EPO was strongly positive in December 2001 despite a -AO/-NAO...therefore it favored a very mild pattern over North America while the blocking favored much colder conditions over Asia and Europe.

 

Thanks for the response!

 

I actually didn't even think to look at the EPO for that month.  EPO certain;y can have major implications on our pattern.

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