712
FXUS01 KWBC 102000
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
300 PM EST TUE DEC 10 2024
VALID 00Z WED DEC 11 2024 - 00Z FRI DEC 13 2024
...WIDESPREAD HEAVY RAIN THREAT DEVELOPING FROM THE CENTRAL AND
EASTERN GULF COAST TO THE ENTIRE EAST COAST TONIGHT INTO
WEDNESDAY...
...ARCTIC AIR TO PLUNGE SOUTH AND EASTWARD ACROSS THE NORTHERN
PLAINS, UPPER MIDWEST, AND GREAT LAKES TONIGHT INTO WEDNESDAY...
...ANOTHER ROUND OF SIGNIFICANT LAKE EFFECT SNOW TO BEGIN
WEDNESDAY AND CONTINUE THROUGH THURSDAY DOWNWIND OF THE LAKES...
A DEVELOPING STORM SYSTEM OVER THE SOUTHEAST U.S. IS SET TO BRING
WIDESPREAD HEAVY RAINS FROM THE CENTRAL AND EASTERN GULF COAST TO
THE ENTIRE EAST COAST TONIGHT INTO WEDNESDAY. A WAVE OF LOW
PRESSURE WILL RAPIDLY STRENGTHEN AND MOVE NORTHEASTWARD ACROSS THE
INTERIOR MID-ATLANTIC AND NORTHEAST, DRAGGING A STRONG COLD FRONT
ALONG WITH IT. AHEAD OF THE FRONT, WARM AND MOIST AIR WILL SET THE
STAGE FOR NUMEROUS SHOWERS AND THUNDERSTORMS, SOME OF WHICH COULD
BECOME STRONG TO SEVERE. THIS IS ESPECIALLY THE CASE ACROSS
EASTERN NORTH CAROLINA ON WEDNESDAY, WHERE THE STORM PREDICTION
CENTER HAS ISSUED A SLIGHT RISK (LEVEL 2 OF 5) FOR SEVERE
THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WIND GUSTS. ELSEWHERE
ALONG THE EASTERN SEABOARD, THE MAIN CONCERN WILL BE A PERIOD OF
HEAVY RAIN WITH EMBEDDED STRONG THUNDERSTORMS AND INTENSE
DOWNPOURS. DESPITE MUCH OF THE REGION CURRENTLY EXPERIENCING
MODERATE TO EXTREME DROUGHT CONDITIONS, THE RAIN, WHILE MOSTLY
BENEFICIAL, COULD STILL LEAD TO SOME LOCALIZED INSTANCES OF FLASH
FLOODING. THE MORE URBANIZED LOCATIONS AND POOR DRAINAGE AREAS
WOULD HAVE THE GREATER RISK OF FLOODING ISSUES.
THE COLD FRONT WILL SWEEP ACROSS THE EAST COAST WEDNESDAY INTO
THURSDAY, WITH MUCH COLDER AIR SURGING IN FROM THE NORTH AND
NORTHWEST IN ITS WAKE. THIS ARCTIC BLAST WILL FIRST PLUNGE INTO
THE NORTHERN PLAINS AND UPPER MIDWEST TONIGHT BEFORE EXPANDING
EASTWARD ACROSS THE GREAT LAKES, MID-ATLANTIC AND NORTHEAST
WEDNESDAY AND THURSDAY. HIGH TEMPERATURES THE NEXT COUPLE OF DAYS
WILL BE ROUGHLY 10 TO AS MUCH AS 30 DEGREES BELOW NORMAL. THE COLD
POST-FRONTAL AIR MASS WILL ALSO HELP TO CHANGE RAIN TO SNOW ACROSS
THE WESTERN SLOPES OF THE APPALACHIANS AND INTERIOR PORTIONS OF
NEW ENGLAND AND THE NORTHEAST WITH AT LEAST MODEST ACCUMULATIONS
LOOKING LIKE A DECENT BET.
ATTENTION THEN TURNS TO YET ANOTHER ROUND OF SIGNIFICANT LAKE
EFFECT SNOW DOWNWIND OF THE GREAT LAKES WEDNESDAY THROUGH
THURSDAY. THE AFOREMENTIONED ARCTIC AIR WILL STREAM ACROSS THE
STILL RELATIVELY WARM GREAT LAKES AND IGNITE INTENSE BANDS OF LAKE
EFFECT SNOW, INITIALLY DOWNWIND OF LAKES SUPERIOR AND MICHIGAN ON
WEDNESDAY AND THEN DOWNWIND OF LAKES ERIE AND ONTARIO WEDNESDAY
NIGHT INTO EARLY THURSDAY. BY THE TIME THE SNOW STARTS TO TAPER
OFF ON FRIDAY, SNOWFALL TOTALS OF 1 TO 2 FEET ARE LIKELY IN THE
FAVORED SNOW BELT ACROSS PORTIONS OF NORTHWEST AND WESTERN NEW
YORK STATE, FAR NORTHWEST PENNSYLVANIA, FAR NORTHEASTERN OHIO, THE
UPPER PENINSULA OF MICHIGAN AND THE WESTERN PORTIONS OF THE LOWER
PENINSULA OF MICHIGAN.
MILLER
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