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Feb 12-13 Sleet/Snow/ZR Event


JoshM

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The 12z Euro Ensembles seem to have come in colder and wetter!  Totals are up across the board for SC and NC.

 

New totals for the EPS mean as of the 12z run:

 

GSO: 7.75"

AVL: 7.75"

CLT: 8.25"

HKY: 7.25"

RDU: 6.75"

PGV: 4"

MWK: 6"

GSP: 8.25"

DAN: 7"

Do you happen to have the 0z totals to compare?

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Robert thinks the Baffin High will stay in place and make this a fairly long lasting event. IMO the pure snow line will run from Lexington NC up to the Va. border. From Lex  (NC)to Charlotte look for primarily snow with a change to sleet.zr late, and for uplands of SC sn to sleet to zr. Raleigh should see a good thump of sn followed by some sleet and zr and this is all from the first batch. 2nd batch is much weaker with mainly light zr across the SC uplands and into NC. My guess for snow totals would be:

 

GSO/INT-6.5"

CLT-4.5"

RDU-4"+

GSP=5"

Atl=1" and zr

Mcn= lt. zr

HKY-=6"

CAE=zr>rn

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Robert thinks the Baffin High will stay in place and make this a fairly long lasting event. IMO the pure snow line will run from Lexington NC up to the Va. border. From Lex  (NC)to Charlotte look for primarily snow with a change to sleet.zr late, and for uplands of SC sn to sleet to zr. Raleigh should see a good thump of sn followed by some sleet and zr and this is all from the first batch. 2nd batch is much weaker with mainly light zr across the SC uplands and into NC. My guess for snow totals would be:

 

GSO/INT-6.5"

CLT-4.5"

RDU-4"+

GSP=5"

Atl=1" and zr

Mcn= lt. zr

HKY-=6"

CAE=zr>rn

Probably more realistic totals

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Is this a guess or do you have information to back up your comments?

Robert thinks the Baffin High will stay in place and make this a fairly long lasting event. IMO the pure snow line will run from Lexington NC up to the Va. border. From Lex  (NC)to Charlotte look for primarily snow with a change to sleet.zr late, and for uplands of SC sn to sleet to zr. Raleigh should see a good thump of sn followed by some sleet and zr and this is all from the first batch. 2nd batch is much weaker with mainly light zr across the SC uplands and into NC. My guess for snow totals would be:

 

GSO/INT-6.5"

CLT-4.5"

RDU-4"+

GSP=5"

Atl=1" and zr

Mcn= lt. zr

HKY-=6"

CAE=zr>rn

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The 12z Euro Ensembles seem to have come in colder and wetter!  Totals are up across the board for SC and NC.

 

New totals for the EPS mean as of the 12z run:

 

GSO: 7.75"

AVL: 7.75"

CLT: 8.25"

HKY: 7.25"

RDU: 6.75"

PGV: 4"

MWK: 6"

GSP: 8.25"

DAN: 7"

Does the DAN stand for Danville va? If not, what is danvilles EPS?

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Is this a guess or do you have information to back up your comments?

Well, as I said it is a guess but based on the comments Robert made and the general history of storms like this over the years. Very seldom does a storm not bring in warm air aloft which changes the precip to zr as the storm winds down, especially South and East of the snow axis

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Either the color on my computer is messed up or else it looks at though they are expecting the bulk to be more to the south. Is that what I'm seeing (Sorry, I'm on my 2nd mojito. Happy bday to me!). lol

That's just the WPC probabilities from earlier today, probably biased by the 00z Euro and 12z GFS.
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Well, as I said it is a guess but based on the comments Robert made and the general history of storms like this over the years. Very seldom does a storm not bring in warm air aloft which changes the precip to zr as the storm winds down, especially South and East of the snow axis

Ok so you are just guessing. Nothing wrong with that. I appreciate your response.
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The full SWS from FFC:

SPECIAL WEATHER STATEMENTNATIONAL WEATHER SERVICE PEACHTREE CITY GA754 PM EST SAT FEB 8 2014GAZ001>009-011>016-019>025-027-030>039-041>050-052>055-057-091300-DADE-WALKER-CATOOSA-WHITFIELD-MURRAY-FANNIN-GILMER-UNION-TOWNS-CHATTOOGA-GORDON-PICKENS-DAWSON-LUMPKIN-WHITE-FLOYD-BARTOW-CHEROKEE-FORSYTH-HALL-BANKS-JACKSON-MADISON-POLK-PAULDING-COBB-NORTH FULTON-GWINNETT-BARROW-CLARKE-OCONEE-OGLETHORPE-WILKES-HARALSON-CARROLL-DOUGLAS-SOUTH FULTON-DEKALB-ROCKDALE-WALTON-NEWTON-MORGAN-GREENE-HEARD-COWETA-FAYETTE-CLAYTON-HENRY-754 PM EST SAT FEB 8 2014...LIKELIHOOD OF WINTRY PRECIPITATION INCREASING ACROSS NORTHERNGEORGIA FOR MONDAY NIGHT AND EARLY TUESDAY...A LOW PRESSURE SYSTEM WILL MOVE EAST ACROSS THE GULF STATES MONDAYINTO TUESDAY. AS A RESULT...ACCUMULATING WINTRY PRECIPITATION ISPOSSIBLE ACROSS PORTIONS OF NORTHERN GEORGIA.AT THIS TIME...THE AREA WITH THE HIGHEST POTENTIAL FORACCUMULATING SNOW IS ALONG AND NORTH OF A LINE FROM CHATTOOGAVILLE TOWALESKA TO CLEVELAND. FURTHER SOUTH...THERE IS SOME POTENTIAL FOR AWINTRY MIX.THERE IS STILL A LOT OF UNCERTAINTY REGARDING THIS SYSTEM. EVEN ASMALL CHANGE IN THE LOW PRESSURE TRACK COULD GREATLY IMPACT THEAMOUNT OF PRECIPITATION THAT FALLS...AND WHAT TYPE OF PRECIPITATIONTHAT FALLS. IT IS TOO EARLY FOR DETERMINISTIC SNOWFALL OR ICEAMOUNTS...HOWEVER THESE FORECASTS WILL BECOME MORE CLEAR SUNDAYINTO EARLY MONDAY. WINTER STORM WATCHES AND WARNINGS MAY BE NEEDEDWITH LATER FORECASTS.
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The full SWS from FFC:

SPECIAL WEATHER STATEMENTNATIONAL WEATHER SERVICE PEACHTREE CITY GA754 PM EST SAT FEB 8 2014GAZ001>009-011>016-019>025-027-030>039-041>050-052>055-057-091300-DADE-WALKER-CATOOSA-WHITFIELD-MURRAY-FANNIN-GILMER-UNION-TOWNS-CHATTOOGA-GORDON-PICKENS-DAWSON-LUMPKIN-WHITE-FLOYD-BARTOW-CHEROKEE-FORSYTH-HALL-BANKS-JACKSON-MADISON-POLK-PAULDING-COBB-NORTH FULTON-GWINNETT-BARROW-CLARKE-OCONEE-OGLETHORPE-WILKES-HARALSON-CARROLL-DOUGLAS-SOUTH FULTON-DEKALB-ROCKDALE-WALTON-NEWTON-MORGAN-GREENE-HEARD-COWETA-FAYETTE-CLAYTON-HENRY-754 PM EST SAT FEB 8 2014...LIKELIHOOD OF WINTRY PRECIPITATION INCREASING ACROSS NORTHERNGEORGIA FOR MONDAY NIGHT AND EARLY TUESDAY...A LOW PRESSURE SYSTEM WILL MOVE EAST ACROSS THE GULF STATES MONDAYINTO TUESDAY. AS A RESULT...ACCUMULATING WINTRY PRECIPITATION ISPOSSIBLE ACROSS PORTIONS OF NORTHERN GEORGIA.AT THIS TIME...THE AREA WITH THE HIGHEST POTENTIAL FORACCUMULATING SNOW IS ALONG AND NORTH OF A LINE FROM CHATTOOGAVILLE TOWALESKA TO CLEVELAND. FURTHER SOUTH...THERE IS SOME POTENTIAL FOR AWINTRY MIX.THERE IS STILL A LOT OF UNCERTAINTY REGARDING THIS SYSTEM. EVEN ASMALL CHANGE IN THE LOW PRESSURE TRACK COULD GREATLY IMPACT THEAMOUNT OF PRECIPITATION THAT FALLS...AND WHAT TYPE OF PRECIPITATIONTHAT FALLS. IT IS TOO EARLY FOR DETERMINISTIC SNOWFALL OR ICEAMOUNTS...HOWEVER THESE FORECASTS WILL BECOME MORE CLEAR SUNDAYINTO EARLY MONDAY. WINTER STORM WATCHES AND WARNINGS MAY BE NEEDEDWITH LATER FORECASTS.

I don't see the word MAJOR anywhere???

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Nobody concerned about temps at all? We just don't do well with caa, right after a front. If front comes through Sunday afternoon, the precip could arrive as soon as midnight mon night/ tues morning. The last event started about 5 or 6 degrees warmer than forecast ! I think it bares watching!

 

 

Thats when the so call NW trend kicks in. If the arctic air and front doesn't push far enough south. Then over running starts further north.  Thats a real possibility though. Something to keep an eye on.

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