395
FXUS01 KWBC 200747
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
236 AM EST TUE JAN 20 2026
VALID 12Z TUE JAN 20 2026 - 12Z THU JAN 22 2026
..LAKE EFFECT SNOW EXPECTED DOWNWIND OF THE GREAT LAKES
...FRIGID ARCTIC AIRMASS REMAINS IN PLACE OVER NORTHEASTERN U.S.
TODAY BEFORE TEMPERATURES MODERATE ON WEDNESDAY...
...FREEZE WARNINGS IN EFFECT FROM SOUTHERN GEORGIA DOWN TO CENTRAL
FLORIDA...
COLD WEST/NORTHWESTERLY FLOW OVER THE GREAT LAKES WILL GENERATE
SNOW SHOWERS DOWNWIND OF THE LAKES FOR THE NEXT SEVERAL DAYS.
BETWEEN 6-12 INCHES ARE PROBABLE FOR MOST AREAS WITH ISOLATED
HIGHER AMOUNTS POSSIBLE, ESPECIALLY DOWNWIND OF LAKE ONTARIO WHERE
HEAVIER SNOWFALL IS EXPECTED TODAY. MEANWHILE, THE SAME FRIGID
ARCTIC AIRMASS WILL REMAIN IN PLACE FROM THE MIDWEST TO THE
NORTHEAST/MID-ATLANTIC TODAY. HIGHS IN THE TEENS AND 20S WILL
REPRESENT TEMPERATURES THAT ARE 15-25 DEGREES BELOW AVERAGE.
FREEZING TO NEAR FREEZING TEMPERATURES PROMPTED THE CONTINUANCE OF
FREEZE WARNINGS FROM SOUTHERN GEORGIA INTO CENTRAL FLORIDA FOR
TONIGHT. TEMPERATURES BEGIN TO REBOUND ON WEDNESDAY AS RENEWED
SOUTHERLY FLOW SUPPLIES WARMER TEMPERATURES OUT AHEAD OF AN
APPROACHING LOW PRESSURE SYSTEM.
ELSEWHERE, AN UPPER RIDGE WILL CONTINUE TO SUPPORT ABOVE AVERAGE
TEMPERATURES ACROSS MOST OF THE WEST OVER THE NEXT SEVERAL DAYS.
AN UPPER-LEVEL DISTURBANCE WILL BREAK OFF FROM ITS PARENT LOW
STATIONED OVER THE GULF OF ALASKA AND AMPLIFY INTO A CLOSED LOW
OVER THE CALIFORNIA COAST LATE WEDNESDAY INTO THURSDAY. THIS
SYSTEM MAY BRING SOME RAIN/SNOW SHOWERS TO PARTS OF THE SIERRA
NEVADA ON THURSDAY, FOLLOWED BY A MAJOR WINTER STORM OVER PARTS OF
THE CENTRAL AND EASTERN U.S. BEGINNING ON FRIDAY.
KEBEDE
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