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2nd Annual Snow Thread for the Mountains


Met1985

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Looks like Thursday night might have something to it.....esp for you higher elevation peeps. Here is GSP's short term:

 

.SHORT TERM /TUESDAY NIGHT THROUGH FRIDAY/...
AS OF 230 PM MONDAY...THE MIDDLE PART OF THE WEEK WILL BE QUIET AND
COOL AS HIGH PRESSURE TRANSLATES ACROSS THE REGION. MIN TEMPS WERE
LOWERED A FEW DEGREES WED MORNING.

THINGS GET MORE INTERESTING ON THURSDAY AS A NRN STREAM TROUGH DIGS
ACROSS THE LOWER MISSISSIPPI VALLEY. THE 12 UTC RUN OF THE GFS IS A
LITTLE DEEPER AND SLOWER THAN THE PREVIOUS RUN. THIS IS MORE IN LINE
WITH THE 12 UTC ECMWF
...THOUGH THE 12 RUN OF THE EC WAS STILL DEEPER
AND SLOWER THAN THE GFS. FOR THE SAKE OF COMPROMISE...I FOLLOWED
FAIRLY CLOSE TO THE GFS FOR THIS EVENT. ON THURSDAY THE GFS BRINGS A
STRONG BAND OF H7 FRONTOGENESIS ACROSS THE MIDLANDS...WITH THE BAND
SLOPING UP TO ABOUT 500 MB OVER OUR FORECAST AREA. AS THE NRN STREAM
TROUGH PHASES WITH SRN STREAM ENERGY...THERE WILL BE A GOOD SLUG OF
SRN STREAM MOISTURE ENTRAINED INTO THE SYSTEM.
SO EVEN WHILE WE
WON/T BE UNDER THE STRONGEST LLVL WARM ADVECTION...AT LEAST ON THIS
RUN...WE SHOULD SEE ADEQUATE FORCING FOR PCPN OVER MUCH OF THE FA ON
THURSDAY. FOR NOW I/VE ONLY UPPED POPS INTO THE CHANCE RANGE...
MAINLY DUE TO THE MUCH MORE PROGRESSIVE NATURE OF THE NAM...BUT I
SUSPECT WE/LL NEED TO RAISE POPS FURTHER FOR THURSDAY WITH LATER
PACKAGES. MOST OF THE PCPN SHOULD BE LIQUID...THOUGH THERE COULD BE
SOME SLEET AND SNOW OVER THE NC MTNS DURING THE MORNING HOURS.

AS THE SFC LOW BEGINS TO CONSOLIDATE OFF THE VIRGINA CAPES THU
NIGHT...NW FLOW WILL INCREASE AS H8 TEMPS FALL TO AROUND -10 DEG C
ALONG THE TN LINE. THE GFS ACTUALLY HAS A LITTLE SYNOPTIC SCALE
FORCING ALONG WITH THE NW FLOW MOISTURE EARLY THURSDAY NIGHT. THIS
COULD RESULT IN A PERIOD OF ENHANCED SNOWFALL ACROSS THE NC MTNS.
THE EC IS ACTUALLY IN GOOD AGREEMENT WITH THE GFS ON THIS PART OF
THE FORECAST.
I/LL BUMP UP THE SNOWFALL WORDING IN THE HWO TO
ACCOUNT FOR THIS...BASICALLY PUTTING THE NC MTNS IN A /WINTER STORM
OUTLOOK/...MEANING A 30 PERCENT CONFIDENCE THAT WINTER STORM
CRITERIA SNOWFALL COULD OCCUR. THIS WOULD MAINLY BE FOR HIGHER
ELEVATIONS AND LOCATIONS ALONG THE TN LINE.
NW FLOW WILL WEAKEN ON
FRIDAY AS A MUCH COLDER AIRMASS ENTERS THE REGION. MAX TEMPS LOOK TO
RUN SEVERAL DEGREES BELOW NORMAL.

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Robert an update for subscribers on the upcoming system.

The NC High Country may finally get its first substantial upslope snow this winter from the backside of the system.

http://wxsouth.com/?cat=9 

Lets hope so. The slopes and those of us who have to live vicariously through the webcams could use it. Just checked the sugar base cam and a nice snow shower is passing through at the moment, Wish they would fix the thermometer up on top, been down a few days now. Anyway whatever happened to localyokelweather from Jackson County? Haven't seen him post in forever.

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Lets hope so. The slopes and those of us who have to live vicariously through the webcams could use it. Just checked the sugar base cam and a nice snow shower is passing through at the moment, Wish they would fix the thermometer up on top, been down a few days now. Anyway whatever happened to localyokelweather from Jackson County? Haven't seen him post in forever.

have not heard from him I was wondering the same thing.
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The models still look very favorable for a good sized event here in the mountains. I know that the models have a very tough time with upslope event but I guarantee  every bit of the moisture coming from TN will get wrung out over the mountains. Looks like a decent event for TN and with the NW flow kicking up I think we see winter storm watches being posted later today for the mountain areas.

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I agree '85.  Things look as though we could even get a couple of inches down here in the valley.  Looking at the most current runs of the gfs & nam on BUFKIT there appears to be a decent snow growth with omega's crashing in saturated air very early Friday morning from 1800' ft and up.  I have just recently been learning how to read & run these so hopefully MikeGold will chime in with an experts opinion.

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GSP short term:

 

&&

.SHORT TERM /WEDNESDAY NIGHT THROUGH FRIDAY/...
 

-- Changed Discussion --

AS OF 150 PM TUESDAY...THE GFS IS A LITTLE DEEPER THAN THE NAM WITH
THE SHORT WAVE THAT CROSSES THE REGION ON THURSDAY. THEY BOTH AGREE
THAT THERE WILL BE SOME PHASING WITH THE NRN AND SRN STREAMS WITH
THE SYSTEM...THOUGH THE RAPID TRANSLATION OF THE WAVE KEEPS SFC LOW
PRESSURE FROM DEEPENING UNTIL IT/S WELL OFF THE COAST. GFS 850-300MB
LAYER DIV-Q SHOWS GOOD DEEP LAYER FORCING CROSSING THE MOUNTAINS
RIGHT AROUND 00 UTC. SNOW LEVELS WILL BEGIN TO QUICKLY FALL AROUND
21 UTC OVER THE HIGH TERRAIN. A PERIOD OF ENHANCED SNOWFALL IS
POSSIBLE BETWEEN 21-03 UTC AS SYNOPTIC SCALE FORCING WILL BE ALIGNED
WITH DEVELOPING NW FLOW. BASED ON A BLEND OF JUST ABOUT EVERY MODEL
QPF...AND A SNOW TO LIQUID RATIO INCREASING TO 15 TO 1...I GET
SNOWFALL TOTALS FROM LATE AFTN THROUGH LATE EVENING OF 2 TO 4 INCHES
ALONG THE TN LINE. A BRIEF PERIOD OF HEAVIER SNOWFALL COULD EVEN
AFFECT SOME OF THE MOUNTAIN VALLEYS.
THE SNOWFALL TOTALS I HAVE ARE
JUST A HAIR BELOW THE 12 HOUR WINTER STORM CRITERIA.
IT/S TOO EARLY
FOR A WATCH ANYWAY...BUT I/LL MENTION THE UPGRADED TOTALS IN THE
HWO.

MUCH COLDER AIR WILL FOLLOW THE SYSTEM THURSDAY NIGHT AND FRIDAY.
WIND CHILL VALUES AT THE HIGHER NC MTN ELEVATIONS SHOULD FALL TO 5
TO 10 DEGREES BELOW ZERO LATER THURSDAY NIGHT. WIND ADVISORY
CRITERIA WINDS ARE ALSO POSSIBLE LATE THURSDAY AND THURSDAY NIGHT
OVER THE NC MTNS.
MAX TEMPS ON FRIDAY SHOULD RUN 10 TO 15 DEGREES
BELOW NORMAL OVER THE FOOTHILLS AND PIEDMONT...AND AROUND 20 DEGREES
BELOW NORMAL OVER THE MOUNTAINS.

-- End Changed Discussion --

 

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The 00z GFS continues to look very good for mountain snow Thursday night into Friday with temps dropping like a rock behind the front. Friday morning travel is going to be very dicey to say the least.

I had some intentions to go to Western Carolina on Thursday evening. You think it will be getting bad crossing the gap by 0z Friday?

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The 00z GFS continues to look very good for mountain snow Thursday night into Friday with temps dropping like a rock behind the front. Friday morning travel is going to be very dicey to say the least.

 

Yeah '85 things finally looking to be going at least our way up here in the mountains.  I would still love to see this cold air sneak into the piedmont, upstate sc, and ne ga for a surprise inch our two so others on the board could cash in.  

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The 00z GFS continues to look very good for mountain snow Thursday night into Friday with temps dropping like a rock behind the front. Friday morning travel is going to be very dicey to say the least.

I dont see big totalsfrom this one. The trough is not very deep and all the dynamics are out once the temps crash. When I look for really good upslope events I like to see saturation at 700mb.
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Thanks! Jury still out on whether I will be going but I knew you guys would know that area a lot better than I do.

during upslope events they will keep a truck at the top of the gap to keep scraping and salting. In my experience balsam gets hit worse during miller a type systems.
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