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Southeast Mid/Long Range Discussion III


Rankin5150

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1060 high and a massive arctic outbreak late in the run. Of course lately the GFS has been showing this. If we get a PNA + ridge out west, it will happen. If not, the west gets cold and we get warmer. The critical component is probably the cutoff and the development of the Maine-to-Hudson Bay ridging that shows up in 5 days. Also, this run redvelops the north Alaskan block, this time combined with Greenland ridging, a critical piece missing. That would force cold to encompass most of the US and keep a southern and eastern storm track. Translation: winter storms.

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Yeah, the pattern evolution on this 00z run of the GFS beats anything we've seen all winter...18z was better too. The RaleighWx maps actually show a sfc high of 1070mb in Montana at hr372 (don't think I've ever seen one that high on a model) with -30 850 temps in the upper midwest.

Holy Cow i didn't notice that FREAKING 1070 !!..LOL

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Yeah, the pattern evolution on this 00z run of the GFS beats anything we've seen all winter...18z was better too. The RaleighWx maps actually show a sfc high of 1070mb in Montana at hr372 (don't think I've ever seen one that high on a model) with -30 850 temps in the upper midwest.

Guess I'd better switch maps, as the NCEP maps I'm looking at only has a 1060. I like your map better :) T

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ecmwf isn't as good looking as GFS,with more troughing about to dig into the west at day 10, but its ensembles are probably closer to GFS. Both models have the ridging between Greenland and Hudson Bay starting in one week. The 6z GFS held on to similar like 00z GFS was, but wasn't as clean a flow, but began the changes around day 7 as well. The best thing is to watch the trends of both models.

post-38-0-96783000-1327060853.gif

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PRELIMINARY EXTENDED FORECAST DISCUSSION

NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD

743 AM EST FRI JAN 20 2012

VALID 12Z TUE JAN 24 2012 - 12Z FRI JAN 27 2012

CHANGES WILL BE OCCURRING AT HIGHER LATITUDES THIS PERIOD AS A

DEEP VORTEX IN THE FAR NORTHEAST PACIFIC WEAKENS EARLY NEXT WEEK

AND REFORMS CLOSE TO THE NORTHERN FRINGE OF NORTH AMERICA. THE

EXPECTED LATITUDE OF THE POLAR VORTEX SHOULD KEEP SYSTEMS

PROGRESSIVE WITHIN THE MID-LATITUDES/LOWER 48 UNITED STATES. A

POSITIVE HEIGHT ANOMALY PROGRESSING NORTHEAST THROUGH THE EASTERN

PACIFIC SHIFTS THE QUASI-ZONAL PACIFIC JET STREAM NORTHWARD FROM

CALIFORNIA BACK TO THE WESTERN US/CANADIAN BORDER AND SHOULD ALLOW

ENERGY/TROUGHING TO DIG DOWNSTREAM INTO THE PLAINS.

EARLY ON..00Z ECMWF/00Z ECMWF ENS MEAN COMPROMISE WITH THE SYSTEM

LIFTING FROM THE MIDWEST INTO CANADA. BY THE MIDDLE OF NEXT

WEEK...THE GUIDANCE CONVERGES TO SOME DEGREE WITH TROUGHING MOVING

ACROSS THE WEST INTO THE PLAINS BEFORE THE MODELS DIVERGE ONCE

MORE...WITH THE 00Z CANADIAN/00Z ECMWF DROPPING A DEEP CYCLONE

INTO NORTHERN MEXICO WHILE THE 00Z GFS KICKS THE SYSTEM EASTWARD.

BOTH CAMPS HAVE ENOUGH SUPPORT FROM THE 00Z GEFS/12Z ECMWF

ENSEMBLE MEANS TO AVOID BEING DISMISSED. BIASES IN THE GUIDANCE

COME INTO PLAY AT THIS POINT IN THE DECISION AS THE 00Z

CANADIAN/00Z ECMWF CAN BE TOO SLOW TO PROGRESS SYSTEMS BEYOND 120

HOURS/FIVE DAYS INTO THE FUTURE WHILE THE GFS CAN BE TOO QUICK

WITH SYSTEMS IN THE WESTERLIES. LATEST 06Z GFS HAS GONE TO A

CONSIDERABLY SLOW SOLUTION AS IT JOINS THE CMC/UKMET/ECMWF CAMP

BUT MAY BE NOW TOO SLOW. THIS HAS LED HPC UPDATED MORNING PROGS TO

A 00Z ECMWF/ECMWF ENS SOLUTION THRU THE PERIOD ALLOWING A SOUTHERN

STREAM CYCLONE TO FORM IN TEXAS BEFORE TRACKING NORTHEAST TO OFF

THE NEW ENG COAST BY DAY 7 FRI.

POTENTIAL MDT TO HVY SNOW EVENT FRO ERN MN/NRN WI AND TEH NRN

PENINSULA OF MI MONDAY. HEAVY PCPN WILL CONTINUE IN THE CA SIERRA

EARLY PERIOD THEN SHIFT NWD INTO B.C. AND THE

PACIFIC NORTHWEST COAST AND COASTAL RANGES AFTER BY WEEK. HEAVY

RAINFALL EVENT SETTING UP FOR EASTERN TX MID WEEK.

ROTH/ROSENSTEIN

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Good to see some action this morning. I looked at the 00z. It had fantasy written all over it...but we all know it's probably just that a fantasy. The good thing is that the GFS continues to hold it's guns that a positive change for us will happen in around two weeks. I doubt it's the mega cold that 00z is serving but it will probably be more like the 6z which would be fine. Here's to hoping it locks and we all get a good storm out of it.

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Models showing change around a weeks time. Where it goes from there is anyones guess and the models will continue to fluctuate wildly i would imagine. We are now taking baby steps toward a more promising pattern. With the clock ticking though, we are going to need to make a few bigger steps in the coming days. I hope that happens.

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It is coming, folks. It is coming.

I hope so, because this weather/winter has been about as bad as it gets. So bad that I've had zero interest in it almost, which is partly the reason I haven't posted much in this forum...although most could care less I'm sure.

I do think things will change as we get into feb or march because for no other reason it would be unusual for sure to keep such a crappy and warm pattern for so long.

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I hope so, because this weather/winter has been about as bad as it gets. So bad that I've had zero interest in it almost, which is partly the reason I haven't posted much in this forum...although most could care less I'm sure.

I do think things will change as we get into feb or march because for no other reason it would be unusual for sure to keep such a crappy and warm pattern for so long.

:angry:

:wub:

After the horrible summers these past two years, I for one would be glad for an extended cool/damp spring. Anything to delay the 90's 100's :P

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I hope so, because this weather/winter has been about as bad as it gets. So bad that I've had zero interest in it almost, which is partly the reason I haven't posted much in this forum...although most could care less I'm sure.

I do think things will change as we get into feb or march because for no other reason it would be unusual for sure to keep such a crappy and warm pattern for so long.

I am not the only one, I'm sure, who's noticed that the less you've posted the worse winter has gotten, lol. I think, if you are really looking out for us, you'd best be posting more, so we can get a good Feb.!!!

I was assuming that because you got so much snow last year, you were snow glutted and didn't care anymore :)

I think we are getting some inklings of icing wanting to show up on the lr. Might be something to watch, as it has been a long time for you and me. T

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