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December 2011 General Disc/Obs


Ellinwood

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Wow...overnight model runs were cold. Euro and 0z and 6z GFS all advertising a significant to possibly severe cold outbreak next Sunday (11th). 6z GFS even has a beautiful 384hr fantasy SECS/MECS.

0Z had the fantasy storm suppressed and pretty much shunted out to sea. 6Z had it in a prime location. 12Z had it run up int to Great Lakes.

Still going to be all over the place at this range.

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The storm or the cold shot? The GFS shows a reasonable pattern for both. You don't need a -NAO or -AO to get cold/snow, it just makes the odds that much better. For the cold shot, the western ridge shoots way north into the Arctic Ocean and there's ridging over the Labrador Sea. In between, a piece of the PV gets shoved south and whammo...big cold shot. For the 384hr fantasy, there's some western ridging inland (which is typically a better

spot for coastals) and then troughing north of Newfoundland and then ridging back toward Greenland. AO is still mega-positive, but the pattern otherwise looks conducive.

Thanks for the info. I'm on my iPhone so cant view the modeling till I get back.

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Be sure to stay tuned for the GFS's next performance. If it had a Cat 3 hurricane making landfall in the Carolinas, I wouldn't be surprised. Just take a look at its last three solutions for the 96 to 120 hour timeframe.

And to think anybody puts merit on model solutions beyond 10 days. Baffling.

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Was there a daily pressure record set today? 30.68in seems quite up the ladder unless my station is wrong.

30.66 on mine, 30.69 at DCA. No idea where that stands in the historical record.

Ugh inches of mercury.

KDCA 031452Z 04005KT 10SM BKN250 07/00 A3069 RMK AO2 SLP392 T00670000 51011

1039.2 mb

God I hate the US measurement system.

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Well, the GFS has certainly cleared things up.

It just looks to me that the pieces are in place on the GFS for a storm. Seems to just fizzle. It also seems that the pieces are there on the NAM to see a storm form. Maybe I just don't know enough to know what I'm looking at. I know the temps are marginal, but the models don't do at 100-120 hours what I would have thought when looking about 12-24 hours earlier.

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Dropped 2 degrees here in the last hour and a half. Am now sitting at 58 with a couple of sprinkles. Hoping to see the cold air bleed in enough throughout the day to maybe see an inch or 2 of snow tonight up here just north of the MD/PA border in Hanover. But after looking over the latest runs and the projected temps :sizzle: I won't hold my breath for any of this. :mapsnow:

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Currently light rain, 41F. I should see a changover to snow early afternoon. 0.59" of rain since midnight when this system of rain moved in. Prior to that I got 0.76" from the drizzly crap...1.35" last day and a half.

HTS should have gone over their annual rainfall record last night of 59.98" set in 1989. I'm currently at 55.95".

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