715
FXUS01 KWBC 220751
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
250 AM EST WED JAN 22 2025
VALID 12Z WED JAN 22 2025 - 12Z FRI JAN 24 2025
...IMPACTS CONTINUE FROM THE HISTORIC WINTER STORM ALONG THE GULF
COAST AND SOUTHEAST...
...DANGEROUSLY COLD TEMPERATURES AND WIND CHILL VALUES WILL LINGER
FOR MUCH OF THE SOUTH AND EASTERN U.S....
...CRITICAL RISK OF FIRE WEATHER FOR SOUTHERN CALIFORNIA THROUGH
THURSDAY...
PRECIPITATION FROM A HISTORIC WINTER STORM WILL CONTINUE THROUGH
WEDNESDAY MORNING FOR THE GULF COAST AND SOUTHEAST WITH AREAS OF
HEAVY SNOW, SLEET, AND FREEZING RAIN EXPECTED FROM NORTHERN
FLORIDA NORTHEAST TO THE NORTH CAROLINA OUTER BANKS. MAJOR HIGHWAY
AND AIR TRAFFIC DISRUPTIONS, INCLUDING ROAD CLOSURES AND FLIGHT
CANCELLATIONS, REMAIN A CONCERN, INCLUDING FOR AREAS FURTHER WEST
ALONG THE GULF COAST WHERE SNOW HAS ALREADY COME TO AN END. THESE
TRAVEL IMPACTS MAY LINGER FOR SEVERAL DAYS GIVEN THE HISTORIC
HEAVY ACCUMULATIONS COMBINED WITH FRIGID TEMPERATURES, AS WELL AS
THE LACK OF EQUIPMENT FOR CLEARING ROADS COMPARED TO AREAS FURTHER
NORTH MORE ACCUSTOMED TO THIS AMOUNT OF SNOWFALL.
FRIGID TEMPERATURES REMAIN IN PLACE MORE BROADLY FROM THE ROCKIES
TO THE EAST COAST. FORECAST HIGHS WEDNESDAY GENERALLY RANGE FROM
THE TEENS AND 20S FOR THE MIDWEST AND THE NORTHEAST, THE 20S AND
30S IN THE ROCKIES, AND THE 30S AND 40S FROM THE CENTRAL/SOUTHERN
PLAINS EAST THROUGH THE SOUTHEAST. WIND CHILLS OF 20 TO 30 DEGREES
BELOW ZERO ARE FORECAST AT TIMES ACROSS THE UPPER MIDWEST AND
NORTHEAST. SUB-ZERO WIND CHILLS WILL CONTINUE FROM THE CENTRAL
PLAINS EASTWARD ACROSS THE OHIO VALLEY AND NORTHERN MID-ATLANTIC.
ANY POWER OUTAGES ACROSS THE GULF COAST AND SOUTHEAST DUE TO THE
WINTER STORM WILL EXACERBATE THE THREAT FROM THE COLD FOR THESE
AREAS. A SLOW RECOVERY IS EXPECTED THURSDAY AS HIGH TEMPERATURES
RISE AROUND 5-10 DEGREES. THE NORTHERN PLAINS/UPPER MIDWEST WILL
SEE MORE SEASONABLE TEMPERATURES WEDNESDAY WITH HIGHS INTO THE 20S
AND 30S BEFORE A COLD FRONT PASSAGE DROPS TEMPERATURES BACK INTO
THE TEENS AND 20S THURSDAY.
PRECIPITATION-WISE, A CLIPPER SYSTEM AND ACCOMPANYING COLD FRONT
SWEEPING THROUGH THE NORTHERN ROCKIES/PLAINS AND UPPER
MIDWEST/GREAT LAKES WILL BRING SOME SNOW SHOWERS WEDNESDAY INTO
WEDNESDAY NIGHT. THESE SNOW SHOWERS WILL SPREAD INTO THE INTERIOR
NORTHEAST AND APPALACHIANS ON THURSDAY AS THE SYSTEM CONTINUES
EAST. SOME LOCALLY HEAVIER TOTALS WILL BE POSSIBLE FOR FAVORABLE
LAKE-EFFECT LOCATIONS DOWNWIND OF THE GREAT LAKES AS THE SYSTEM
MOVES THROUGH AND WITH COLD, NORTHWESTERLY FLOW IN PLACE. ANOTHER
CLIPPER SYSTEM DROPPING SOUTHWARD WILL BRING A RENEWED CHANCE FOR
SNOW SHOWERS TO THE NORTHERN ROCKIES/PLAINS THURSDAY NIGHT.
IN THE WEST, THE STORM PREDICTION CENTER CONTINUES A CRITICAL RISK
OF FIRE WEATHER (LEVEL 2/3) FOR SOUTHERN CALIFORNIA WEDNESDAY INTO
THURSDAY AS VERY STRONG OFFSHORE WINDS PERSIST AND HUMIDITY VALUES
REMAIN VERY LOW. TEMPERATURE-WISE, CONDITIONS WILL BE GENERALLY AT
OR ABOVE WINTER AVERAGES AND MILD IN COMPARISON TO THE EAST.
FORECAST HIGHS RANGE FROM THE 30S AND 40S FOR THE INTERIOR WEST,
THE 40S AND 50S IN THE PACIFIC NORTHWEST, AND THE 60S AND 70S IN
CALIFORNIA AND THE DESERT SOUTHWEST. MORNING LOW TEMPERATURES WILL
REMAIN A BIT CHILLY, HOWEVER, WITH FROST AND FREEZE RELATED
CONCERNS FOR THE MORE SENSITIVE AREAS OF THE DESERT SOUTHWEST AND
CALIFORNIA VALLEYS AS TEMPERATURES DROP INTO THE 30S.
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