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Good year DC snowstorm patterns. oops added 1996


usedtobe

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Note how simiar the patterns of above normal heights and below are for the 2009, 2010, 1987 and 983 storms were.  All had high heights across greenland into Baffin Bay.  Almost all the big ones had that except two that had negative NAO but were east based. One had a monster 50 50 that made up for it.  That's what I'd hope to eveolve this year if you want a big one.  1967 was even more anomalous, a southern stream system with perfect timing.  Could happen but rarely does.

 

I'll start with Dec 2009 since we've got the thread on it already floating around.

 

post-70-0-70294300-1387983128_thumb.gif

 

Now compare that with the pattern centered around our two big Feb snowstorms in 2010

 

post-70-0-36339100-1387983277_thumb.gif

 

Now 1983,  another big storm.

 

post-70-0-78428000-1387983337_thumb.gif

 

Now Jan 1987

 

post-70-0-55617100-1387983426_thumb.gif

 

Feb 1987

post-70-0-62848200-1387983519_thumb.gif

 

Now 1966

 

post-70-0-54876200-1387983673_thumb.gif

 

Feb 1958

 

post-70-0-98492700-1387983738_thumb.gif

 

Mar 1958

 

post-70-0-42582300-1387983828_thumb.gif

 

MArch 1960, a miller b that worked.

 

post-70-0-60646700-1387983934_thumb.gif

 

Now for two anomalous storms.  Feb 1967, an east based NAO with a really strong polar vortex north of Hudson Bay.

 

post-70-0-75348100-1387984073_thumb.gif

 

And 2003. an east based NAO with a strong 50 50 low. 

 

post-70-0-17370700-1387984186_thumb.gif

 

1996, I think the lone la nina case.  Note it doesn't look like a nina.  positive PNA, negative nao.

 

post-70-0-28105400-1387996995_thumb.gif

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