518
FXUS01 KWBC 052000
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
300 PM EST SUN JAN 05 2025
VALID 00Z MON JAN 06 2025 - 00Z WED JAN 08 2025
...LARGE WINTER STORM TO TRACK EAST FROM THE CENTRAL
PLAINS/MIDWEST TO THE EAST COAST THROUGH MONDAY WITH HEAVY SNOW,
GUSTY WINDS AND DAMAGING ICE ACCUMULATIONS...
...SEVERE THUNDERSTORMS WILL CONTINUE TO AFFECT THE LOWER
MISSISSIPPI VALLEY THROUGH LATE THIS EVENING BUT THE THREAT IS
EXPECTED TO LOWER AND SHIFT EAST FOR MONDAY...
...A MIX OF RAIN AND HIGHER ELEVATION SNOW WILL IMPACT PARTS OF
THE WESTERN U.S. OVER THE NEXT 48 HOURS WITH TEMPERATURES TRENDING
COLDER ON TUESDAY...
A MAJOR WINTER STORM WILL MOVE EASTWARD FROM THE CENTRAL PLAINS
INTO THE OHIO VALLEY AND MID-ATLANTIC REGION TONIGHT, BRINGING
AREAS OF SNOW, SLEET, FREEZING RAIN AND GUSTY WINDS ALONG ITS
PATH. GUSTY WINDS, LOCALLY EXCEEDING 40 MPH, WILL CREATE BLIZZARD
CONDITIONS FROM KANSAS INTO NORTHWESTERN MISSOURI THROUGH THIS
EVENING, WITH CONDITIONS IMPROVING FROM WEST TO EAST OVERNIGHT
TONIGHT. AREAS OF HEAVY SNOW WILL SPREAD EASTWARD THROUGH THE OHIO
VALLEY AND CENTRAL APPALACHIANS TONIGHT, REACHING THE NORTHERN
MID-ATLANTIC BY MONDAY MORNING. WHILE WINDS WILL BE WEAKER ACROSS
THE OHIO VALLEY AND MID-ATLANTIC REGION, OCCASIONAL GUSTS UP TO
20-25 MPH WILL STILL BE POSSIBLE WHICH WILL RESULT IN REDUCED
VISIBILITIES FROM SNOWFALL OR SNOW ON THE GROUND. TOTAL SNOWFALL
ACCUMULATIONS OF 6 TO 12 INCHES ARE EXPECTED FROM SOUTHERN OHIO TO
THE D.C. METROPOLITAN AREA. SOUTH OF THE SNOW WILL BE A MIXTURE OF
SLEET AND FREEZING RAIN WITH DAMAGING ICE ACCUMULATIONS WHICH ARE
EXPECTED TO EXCEED 0.25 INCHES FOR NORTHERN KENTUCKY AND PORTIONS
OF SOUTHERN WEST VIRGINIA. LIGHTER, BUT STILL HAZARDOUS ICE
ACCUMULATIONS GENERALLY BETWEEN 0.10 AND 0.25 INCHES ARE EXPECTED
ALONG AND EAST OF THE BLUE RIDGE MOUNTAINS INTO WESTERN NORTH
CAROLINA AND CENTRAL/SOUTHERN VIRGINIA.
ON THE WARM SIDE OF THE STORM SYSTEM, SEVERE THUNDERSTORMS CAPABLE
OF PRODUCING TORNADOES AND DAMAGING STRAIGHT LINE WINDS WILL MOVE
EAST FROM ARKANSAS AND LOUISIANA INTO MISSISSIPPI AND ALABAMA THIS
EVENING. THE THREAT FOR SEVERE THUNDERSTORMS IS EXPECTED TO WANE
OVERNIGHT BUT INCREASE AGAIN FOR PORTIONS OF SOUTHERN GEORGIA AND
NORTHERN FLORIDA ON MONDAY, THOUGH THE THREAT IS EXPECTED TO BE
REDUCED COMPARED TO THE LOWER MISSISSIPPI VALLEY.
THE EASTERN STORM SYSTEM WILL EXIT QUICKLY INTO THE WESTERN
ATLANTIC MONDAY NIGHT WITH LINGERING SNOW SHOWERS DOWNWIND OF THE
GREAT LAKES AND INTO THE FAVORED UPSLOPE REGIONS OF THE
CENTRAL/NORTHERN APPALACHIANS. MUCH COLDER AIR WILL FILTER INTO
THE CENTRAL AND EASTERN U.S. IN THE WAKE OF THE EASTERN STORM
SYSTEM RESULTING IN HIGH TEMPERATURE DEPARTURES OF ROUGHLY 10 TO
20 DEGREES BELOW AVERAGE FOR LARGE PORTIONS OF THE GREAT PLAINS TO
THE EAST COAST ON MONDAY AND TUESDAY.
ACROSS THE WESTERN U.S., A PAIR OF RELATIVELY WEAK DISTURBANCES
ALOFT WILL BRING A MIXTURE OF LOWER ELEVATION RAIN AND MOUNTAIN
SNOW FROM THE PACIFIC NORTHWEST TO THE NORTHERN AND CENTRAL
ROCKIES. RAIN/SNOW TOTALS ARE EXPECTED TO REMAIN FAIRLY LIGHT FOR
THE WEST AND TEMPERATURES WILL BE 5 TO 15 DEGREES ABOVE AVERAGE
WEST OF THE CONTINENTAL DIVIDE ON MONDAY. COLDER AIR FILTERING IN
FROM THE NORTH WILL COOL TEMPERATURES CLOSER TO AVERAGE ON TUESDAY
FOR MUCH OF THE WESTERN THIRD OF THE NATION.
OTTO
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