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Christmas Storm VI


Cold Rain

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For those wondering what it's going to be like in West central Georgia/East Central Alabama. Right now, the temps are a tad too warm at 700 and above to see any real snow fall. This will start out as rain, and then toward the evening hours, it will become a mix of rain/sleet/snow. Sleet is possible starting after about... 4pm (depending how warm we get tomorrow). The snow could start mixing in around 7pm or thereafter. The heights suggest we will be plenty cold from 850 to the sfc, but it's the 700 to 850 range that will do us in for seeing any real snowfall like the Mets are talking about for Eastern Georgia and the Carolinas.

We would have to see the levels above 850 get just a little cooler and we could see snow... so don't write it off COMPLETELY just yet.

Could you possibly talk about the Atlanta Metropilis.....I have heard private guys around saying 3 or more for Atl....

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RAH 10:21 pm update:

.NEAR TERM /THROUGH TONIGHT/...

-- Changed Discussion --AS OF 930 PM FRIDAY...

DECIDED TO ISSUE A WINTER STORM WATCH FOR THE EASTERN TWO THIRDS

OF THE CWA AS MODELS CONTINUE TO SHOW AN UPWARD TREND IN THE

FORECAST SNOW ACCUMULATIONS. AS STATED BEFORE...THE 12Z AND 18Z

GFS PULLED THE COASTAL LOW TIGHTER TO THE COAST IN RESPONSE TO THE

DEEPENING AND CLOSING OFF OF THE MID AND UPPER LOW AS IT DIGS FROM

KY/TN ACROSS NC SATURDAY NIGHT AND SUNDAY. THE 12Z NAM ALSO

TRENDED IN THIS DIRECTION AS WELL. HPC HAD FELT THAT SOME DATA

PROBLEMS MAY HAVE LED TO INITIALIZATION ERRORS WITH THE GFS AND

NAM AT 12Z BUT THE RAMIFICATIONS (IF ANY) ON THE OUTPUTS WERE NOT

KNOWN. HOWEVER...THE NEW 00Z NAM HAS COME IN AND IT IS INDEED

SHOWING HIGHER SNOW ACCUMULATIONS THEN PREVIOUS RUNS. HPC HAS ALSO

NOTED THAT THE ENSEMBLE SPREAD WITH THIS SYSTEM HAS INCREASED

SINCE THIS TIME YESTERDAY...ADDING TO THE LOW CONFIDENCE FORECAST.

THEREFORE...WITH THE HIGHER THEN NORMAL DISCREPANCIES IN THE

MODELS (WHEN WE ARE ONLY 24-36 HOURS OUT)...DECIDED TO ERR ON THE

SIDE OF CAUTION AND ISSUE A WATCH. IT STILL APPEARS THAT THE

LESSER AMOUNTS SHOULD BE IN THE NW...WITH HIGHEST AMOUNTS FURTHER

EAST. THIS STILL APPEARS REASONABLE AND MORE DETAILS CAN BE FOUND

IN THE WINTER STORM WATCH STATEMENT (WSW)...HAZARDOUS WEATHER

OUTLOOK (HWO) AND THE PREVIOUS DISCUSSION BELOW WHICH COVERS THE

TIME FRAME THE STORM IS EXPECTED.

OTHERWISE...FOR THE REMAINDER OF TONIGHT...CLOUDS WILL CONTINUE

TO INCREASE AND LOWER THROUGH THE OVERNIGHT HOURS. SOMEWHAT OF AN

ATYPICAL TEMPERATURE PATTERN IS CURRENTLY IN PLACE...WITH CURRENT

TEMPS RANGING FROM THE LOW TO MID 30S ACROSS THE WEST TO UPPER 20S

TO NEAR 30 DEGREES FURTHER EAST (DUE TO THE PARTLY CLOUDY SKIES

ACROSS THE EAST). OVERNIGHT LOWS MAY ONLY BE A COUPLE OF DEGREES

LOWER THAN CURRENT TEMPS AS THE CLOUDS INCREASE ACROSS THE REGION

AND PREVENT MUCH MORE RADIATIONAL COOLING.-- End Changed Discussion --

&&

.SHORT TERM /SATURDAY THROUGH SUNDAY NIGHT/...

-- Unchanged Discussion --FROM 250 PM FRIDAY...

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They are pay maps and I can't post them...you can pay for them if you would like to see them.

Makes sense. I assume 4-8" for Charlotte metro, triad, and traingle?

Thanks and thanks for the PBP the last several days. Looks like we might finally bring one home.

Best of luck. and Merry Christmas.

TW

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