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Jan 11-12 Model/Forecasting Discussion


Ji

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over all this is a huge step in the right direction. the first S/W stays alot stronger through the south, the northen branch dives in and closes off and tries to grab it, all timing here. the precip field has shifted well north this run all just a tad slower

my issue and the euro has done this a few times now recently in one spot or another is the fact that the slp sorta stalls for 24 hours off the se coast waiting to be picked up. i wonder how likely that is.

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my issue and the euro has done this a few times now recently in one spot or another is the fact that the slp sorta stalls for 24 hours off the se coast waiting to be picked up. i wonder how likely that is.

That can happen and is always hard to predict. It's happening because the 1st impulse petty much damps out as the real energy and upper level divergence is associated with the strong trough to the west.

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my issue and the euro has done this a few times now recently in one spot or another is the fact that the slp sorta stalls for 24 hours off the se coast waiting to be picked up. i wonder how likely that is.

yea it just drifts for a full day before it cranks up. if it can sit closer to the coast that would make a huge difference

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That can happen and is always hard to predict. It's happening because the 1st impulse petty much damps out as the real energy and upper level divergence is associated with the strong trough to the west.

ok thx. i can see that i think.. it just doesnt seem like something we see that often.

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nope... goes almost due east as it bombs

Very similar track to our blizzards of 2009-2010 with the sharp precip cutoff on the north side, just slightly too too far south and east for us, which I believe is what happened last year at this range too. The low moves roughly nne along the coast and then out to sea when it gets to about baltimore latitude. I like the looks of it if the models can drift it northwest a bit over coming days.

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Very similar track to our blizzards of 2009-2010 with the sharp precip cutoff on the north side, just slightly too too far south and east for us, which I believe is what happened last year at this range too. The low moves roughly nne along the coast and then out to sea when it gets to about baltimore latitude. I like the looks of it if the models can drift it northwest a bit over coming days.

yeah except the euro did the same thing just closer to us in this range for dec 26..

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yeah except the euro did the same thing just closer to us in this range for dec 26..

If I recall correctly the Euro had a super bomb that retrograded to the west just south of dc prior to the 12/26 event, and it also didn't have the support of any other models like it does in this case today.

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for a NINA, there sure are a lot of storms going into the SE

where's the SE Ridge?

I've been looking at the SSTA maps and it seems to me that the big diff between this year and other NINA years is that the waters off the SE coast of US are darn cold

prior years they were much warmer and maybe supported the SE Ridge

This year's SSTA: http://weather.unisys.com/surface/sst_anom.gif

here are links to prior NINA's or recent history, look how much warmer the waters are off SE coast compared to this year:

http://weather.unisys.com/archive/sst/sst_anom-080106.gif

http://weather.unisys.com/archive/sst/sst_anom-090111.gif

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