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Nov. 27th - Nov. 29th Upper Level Low


LithiaWx

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All models now seem to tilt the strong cutoff at 60 hours, aiming a strong upslope flow into ne Ga and the southern Apps. This is going to be a wallop of super-heavy rain there. And by 66 hours the core of the cold is coming over northern Al, and GA and already spreading into western SC and southwest NC. Looks similar to NAM

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Is there gonna be heavy winds too, or just the heavy rain? If there's a possibility of 5" where I am along with heavy winds, sounds like a possibility for a lot of trees down...so just wondering.

The winds for you would be overnight Sunday night into early Monday. Whats your elevation? If its around 2000 feet you're in for quite a strong belt of winds increasing overnight Sunday. Edit. Just check the GFS and for some reason it keeps the highest winds south of your area. Not sure I buy that.

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Looks like downsloping winds will cut into rain amounts in NE TN. For those of you who don't live here, that is a real headache on snow events...but prevents flooding rains many times. That 60 hr precip map on the 12z NAM looks like those old precip climo maps where I would wonder how NE SC would get so much rain and SW NC for that matter. I'd hate to be a hydrologist for TVA right now. Going to be moving some water on the main stem next weekend.

At 54 hours, midday Monday the GFS produces those strong winds in your area, thanks to the strong downsloping going on. Pretty neat phenomenon.

post-38-0-92277400-1322324510.gif

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The winds for you would be overnight Sunday night into early Monday. Whats your elevation? If its around 2000 feet you're in for quite a strong belt of winds increasing overnight Sunday. Edit. Just check the GFS and for some reason it keeps the highest winds south of your area. Not sure I buy that.

My elevation is 1903, but my neighbor is 2000 & 2130. I've been looking at NWS and they have calm to 10 mph and Accuweather has me with gusts to 20 at times, well, they did earlier... thanks Robert!!! I like the high winds....of course I like every aspect of winter weather, though. Thanks for all your input...learning a lot from ya'll.

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That is a ton of rain ... Would love to see the 4"+ amounts imby lol

You're in the ideal spot for this one. All models have it, plus it just fits the bill to a T. I always dislike where I am on these kind of events because one county west of here can get 4 or 5 times my amount like around Hickory Nut Gorge or Batcave. I think I have a shot at 2" here.

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First flakes of the season now added to the forecast for the North Carolina foothills from RaysWeather.

Snowman.gif

Bring it :thumbsup: From now to March, I want ZR/IP or SNOW!!! Everybody can have the rain if that's what they want... Frosty likes winter weather. :weight_lift: Now there's nothing wrong with rain, I just would love to see some frozen/freezing precip!!!

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HPC Diagnostic Discussion:

...DEEP CLOSED LOW FORMING OVER THE SRN STATES...

PREFERENCE: 12Z ECMWF

THE 250 MB WIND SPEED ANALYSIS IN THE GFS IS 10-17 KTS WEAKER THAN

REPORTED BY RAOBS OVER MONTANA AND ALBERTA. NAM ERRORS OF SIMILAR

MAGNITUDE ARE CONFINED TO W-CNTRL MT/ALBERTA. THE UKMET/CANADIAN

GLBL/ECMWF ANALYSES HAVE A BETTER INDICATION OF A 150+ KT SPEED

MAX OVER ALBERTA. OVER MT THE CANADIAN GLBL COMES CLOSEST TO

MATCHING TFX WITH THE ECMWF NOT FAR BEHIND WHILE THE ECMWF IS

ABOUT 20 KTS WEAK OVER GGW WITH THE UKMET/CMC ABOUT 10 KTS WEAK.

THERE CONTINUES TO BE MEANINGFUL SPREAD WITH THIS ANOMALOUSLY SWD

CLOSED LOW OF SUCH DEPTH... WITH SOME MID LVL HGTS ALONG THE GULF

COAST REACHING AT LEAST 4-5 STANDARD DEVIATIONS BELOW NORMAL SUN

NIGHT-MON IN MOST GUIDANCE. IT ALSO REMAINS TO BE SEEN WHAT

IMPACT THERE MAY BE FROM THE AFOREMENTIONED INIT ISSUES WITH 250

MB WINDS OVER MT/ALBERTA. AT THE VERY LEAST BETTER COMPARISON OF

THE ECMWF/UKMET/CMC TO ALBERTA DATA AND SLOWER TRENDS OF THE UKMET

AND TO A MUCH LESSER DEGREE ECMWF VERSUS 00Z RUNS... PLUS MUCH

SLOWER TRENDS OF THE NAM/GFS OVER THE PAST DAY... RECOMMEND

LEANING AWAY FROM THE NAM/GFS WHICH BRING THE TROF/CLOSED LOW

FARTHER EWD THEN NEWD WITH TIME COMPARED TO OTHER GUIDANCE. CMC

RUNS CONTINUE TO BE ON THE SLOW SIDE THOUGH THE MODEL TENDS TO BE

TOO AMPLIFIED WITH TROFS... WHILE THE 09Z SREF MEAN ALSO FAVORS A

SLOW SOLN. THE 12Z GEFS MEAN IS THE ONE SOLN TO TREND FASTER...

TOWARD ITS OPERATIONAL RUN... WHILE THE 06Z GEFS MEAN WAS CLOSER

TO THE PREVIOUS BEST CONSENSUS CONSISTING OF THE 00Z ECMWF/ECMWF

MEAN AND 00Z UKMET. DIFFS ALOFT LEAD TO CORRESPONDING DIFFS AT

THE SFC FOR THE MOST PART. THE UKMET APPEARS TO BRING ITS SFC LOW

TOO FAR WWD RELATIVE TO ITS MID LVL EVOLUTION AROUND MON

NIGHT-EARLY TUE. WITH ABOVE INDICATIONS GENERALLY POINTING TOWARD

A SOLN IN THE MIDDLE TO SLOWER HALF OF THE SPREAD... BUT THE 12Z

ECMWF ADJUSTING ONLY A LITTLE SLOWER FROM PREVIOUS BEST

CLUSTERING... FINAL RECOMMENDATION IS FOR A SOLN CLOSEST TO THE

12Z ECMWF. PERSISTENT SPREAD AND POOR CONTINUITY IN SOME SOLNS

YIELD BELOW AVERAGE CONFIDENCE.

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I will be puddle jumping with joy if it happens :wub:

Goofy this morning is still showing some white gold falling close to Tony and Psalm :)

It's looking good for both of us! I'd be thrilled if you could get a couple of inches, as I well know how the rain shaft you've been getting feels. I've been doing better that last 3 events, but you still haven't been getting squat. I'm pulling for you.

As for snow I'd like the see the ULL getting further south, but the wrap around has been looking more vigorous than is usual, so it wouldn't surprise me to see some. But I'm not holding my breath..... though as Robert says, someone will have a great surprise. That is the thing about ULLs..surprise :) T

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