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Christmas/Post Christmas Threat


Nikolai

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I thought as much from the 168 hr psu graphic. it wouldn't take much for a much better hit.

looks like the areas with best precip in va would have some mixing issues but the euro has had this for a few runs now so... gfs out to lunch imo but i guess there's a risk at this pt

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looks like the areas with best precip in va would have some mixing issues but the euro has had this for a few runs now so... gfs out to lunch imo but i guess there's a risk at this pt

In a nina year, heck, any year. The euro look is the more likely solution than a look like the gfs. Still the D+8 pattern makes me more interested than I'd be otherwise.

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I find it annoying that two people on here are in semi troll mode because they have travel plans during this potential...not you terpeast.

Hmm. I hope you're not talking about my post that I quoted below. If you are, then I think you misunderstood what I meant. I've got tons of family and friends in this area and although I won't be here for the holiday, I sure hope that they get to enjoy a Christmas storm. :snowman:

I've been waiting for a true white Christmas all of my life and watch it happen this year because I'm getting on a plane Christmas eve at 7AM. :arrowhead:

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I posted this in the 12z model thread also but having some models a little south is a good thing this time. The 12/19 event was different because the 'north" trend we see usually would not help us, the problems were the trough axis being too far east, not enough stj energy, and a late phase. None of that is improved by a north trend of the H5 energy. Actually it was made worse. The normal error of all models from 7 days out is to dig h5 impulses and lows too far south in the CONUS. This is why we see the "north" trend. many confused it for a west trend because the coast moves SW to NE so a north trend also brings precip further inland as you move up the coast but it is a north not a west trend in reality. Having the mean of all the models a little south of DC right now is a very good thing. I will be in Reston VA for the holidays and right now I would still be more worried about mixing issues then a miss south from the data as it is now. This setup is infinitely more promising then the last one. Not sure I buy the crazy 12z GFS solution but I think a moderate snowstorm is very possible. Then again, the euro ensemble mean is very encouraging and we are still at a range when even the euro can not be seeing the intensity of the system yet. I also like the whole pattern through New Years for the potential of snowfall in general. A retrograding block over canada, extreme -AO, and it looks like that freaking pinwheel of death over the PAC nw is relaxing for a while. This could be a good end to 2010.

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Even if it is only a 4" job if you're not here will you be a tad sad?

Of course... Especially if I get nothing. But spending Xmas alone with a box of Cheese Its probably not much fun either..?

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from hpc this morning.....

PRELIMINARY EXTENDED FORECAST DISCUSSION

NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD

400 AM EST SUN DEC 19 2010

VALID 12Z THU DEC 23 2010 - 12Z SUN DEC 26 2010

...INCREASING CHANCES FOR A MAJOR WINTER STORM FROM THE MIDWEST TO

THE EAST COAST TOWARD CHRISTMAS...

USED THE 00Z ECMWF FOR THE PRELIMINARY FRONTS AND PRESSURES FOR

DAYS 3 THROUGH 7. THE 00Z ECMWF WAS IN PHENOMENALLY GOOD

AGREEMENT WITH THE GFS WITH THE TRACK AND RELATIVE INTENSITY OF

THE MAJOR WAVE TRACKING ACROSS THE MIDWEST DAY 5 TO OFF THE MID

ATLANTIC COAST DAY 7. FURTHERMORE...THE 00Z/19 GEFS MEAN IS VERY

CLOSE TO THE 12Z/18 ECENS MEAN WITH THE SAME SYSTEM...ADDITIONALLY

PARTICULARLY ROBUST SUPPORT. USED THE ECMWF SINCE ITS DETAILS

TEND TO VERIFY BETTER IN THE MEDIUM RANGE...WHICH MAY HELP TO SORT

OUT THE NOISY SHORTWAVE ENERGY RESURGING INTO THE WEST THIS

PERIOD.

CISCO

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