516
FXUS01 KWBC 201903
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
202 PM EST TUE JAN 20 2026
VALID 00Z WED JAN 21 2026 - 00Z FRI JAN 23 2026
..LAKE EFFECT SNOW EXPECTED DOWNWIND OF THE GREAT LAKES
...FRIGID ARCTIC AIRMASS RETURNS OVER NORTHEASTERN AND CENTRAL U.S
THURSDAY INTO FRIDAY...
...FREEZE WARNINGS IN EFFECT FROM SOUTHERN GEORGIA DOWN INTO
FLORIDA...
MULTIPLE CLIPPER SYSTEMS FROM THE CANADIAN ROCKIES WILL MOVE
THROUGH THE NORTHERN PLAINS, MIDWEST, AND GREAT LAKES CARRYING
SPORADIC SNOW SHOWERS AND COLD TEMPERATURES THROUGH THE PERIOD.
BEHIND THE COLD FRONTS, A NORTHWESTERLY FLOW WILL ENHANCE THE
LAKE-EFFECT, WHICH WILL BRING SNOW DOWNWIND OF THE GREAT LAKES,
WITH LOCALIZED HEAVIER SNOW NEAR THE EASTERN AND SOUTHERN SIDE OF
THE LAKES, ESPECIALLY NEAR LAKE ONTARIO.
AN ARCTIC AIR MASS CONTINUES TO DOMINATE MUCH OF THE EASTERN HALF
OF CONUS, ESPECIALLY ACROSS NORTHEAST AND MIDWEST, BRINGING
BITTERLY COLD TEMPERATURES PERSISTING THROUGH MUCH OF THE PERIOD.
FREEZE WARNING ARE IN EFFECT FOR PARTS OF GEORGIA INTO NORTHERN
FLORIDA, AS SUB-FREEZING TEMPERATURES WILL RETURN OVERNIGHT. AS
THE ARCTIC COLD AIR MASS CONTINUES TO SPREAD SOUTHEASTWARD, EXPECT
SIGNIFICANTLY BELOW NORMAL COLD CONDITIONS TO PREVAIL FOR MUCH OF
THE CENTRAL AND EASTERN U.S. THURSDAY INTO FRIDAY, EXPECT
TEMPERATURES BETWEEN 15-25 DEGREES BELOW NORMAL WITH PARTS OF THE
NORTHERN PLAINS AND UPPER MIDWEST DROPPING BELOW 0 DEGREES.
OTHERWISE, EXPECT NEAR NORMAL TO SLIGHTLY ABOVE NORMAL
TEMPERATURES OVER WESTERN U.S. THROUGH FRIDAY.
A LOW PRESSURE SYSTEM WILL BRING A SOUTHERN STREAM ACROSS NORTHERN
BAJA CALIFORNIA TOWARDS THE END OF THE PERIOD. WITH THE CYCLONIC
FLOW, MOIST GULF AIR WILL POOL AND COLLIDE WITH THE ARCTIC AIR
BRINGING WIDESPREAD WINTRY PRECIPITATION ACROSS TEXAS TO THE
SOUTHEAST. AS THE SYSTEM CONTINUES TO TRACK FURTHER NORTH, SNOW
CHANCES WILL INCREASE ACROSS THE OHIO VALLEY, MID-ATLANTIC, AND
NORTHEAST. ALTHOUGH CONFIDENCE CONTINUES TO TREND HIGHER FOR AN
IMPACTFUL SYSTEM DEVELOPING, THE TIMING, TRACK AND STRENGTH OF
THIS WINTER STORM CONTINUES TO REMAIN UNCERTAIN. THEREFORE, REMAIN
UP TO DATE WITH THE LATEST FORECAST INFORMATION AT WEATHER.GOV.
A SURFACE TROUGH WILL BRING CHANCES FOR HEAVY RAINFALL OVER THE
SOUTH FLORIDA COAST THAT WILL SERVE TO BE PRIMARILY BENEFICIAL, AS
CONDITIONS OVER THIS AREA TRENDS DRIER FOR THIS TIME OF YEAR.
THERE IS A SLIGHT CHANCE FOR SOME ISOLATED FLASH FLOODING BUT
PROBABILITY IS TOO LOW TO ISSUE A MARGINAL RISK (LEVEL 1/4) AT
THIS MOMENT.
OUDIT
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