143
FXUS01 KWBC 220803
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
300 AM EST WED NOV 22 2023
VALID 12Z WED NOV 22 2023 - 12Z FRI NOV 24 2023
...WIDESPREAD RAINFALL AND LOCALLY HEAVY RAIN ALONG THE EAST COAST
ARE EXPECTED TO TAPER OFF BY THIS EVENING...
...ACCUMULATING SNOW TODAY ACROSS NORTHERN NEW ENGLAND AND
ESPECIALLY OVER NORTHERN MAINE...
...A WHITE THANKSGIVING IS ON TAP FOR NORTHERN AND CENTRAL ROCKIES
AS ARCTIC AIR INTRUDES THE NORTHERN TIER OF THE COUNTRY ON
THANKSGIVING DAY INTO FRIDAY...
A LOW PRESSURE COMPLEX THAT HAD BROUGHT A ROUND OF SOAKING RAIN
ACROSS MUCH OF THE EASTERN U.S. ON TUESDAY IS IN THE PROCESS OF
MOVING OFF THE EAST COAST EARLY THIS MORNING. HOWEVER, THE
CAROLINAS AND NEW ENGLAND WILL LIKELY SEE PRECIPITATION LINGERING
LONGER TODAY AS RAIN TAPERS OFF IN OTHER AREAS ALONG THE EAST
COAST. COLD AIR TRAPPED IN NEW ENGLAND WILL SUPPORT SNOW TODAY AS
THE CENTER OF A LOW PRESSURE SYSTEM PASSES JUST TO THE SOUTH. UP
TO 8 INCHES OF SNOW IS FORECAST FOR PORTIONS OF NORTHERN MAINE.
BY THANKSGIVING MORNING, THE LOW PRESSURE SYSTEM WILL LARGELY MOVE
OFF THE EAST COAST, BRINGING CLEARING SKIES JUST IN TIME FOR
THANKSGIVING FESTIVITIES. NEVERTHELESS, MUCH OF THE NORTHEAST
WILL LIKELY CONTEND WITH BLUSTERY CONDITIONS AS THE STORM IS
FORECAST TO DEEPEN QUITE RAPIDLY JUST OFF TO THE EAST. SOME SNOW
SHOWERS ARE FORECAST TO RESUME OVER INTERIOR NEW ENGLAND BY
THANKSGIVING EVENING AS AN ARCTIC FRONT APPROACHES FROM THE WEST.
MEANWHILE, A SNOW EVENT IS BREWING OVER THE NORTHERN ROCKIES.
RAIN ASSOCIATED WITH A FRONTAL SYSTEM CURRENTLY MOVING ONSHORE
INTO THE PACIFIC NORTHWEST IS FORECAST TO MERGE WITH A SURGE OF
ARCTIC AIR DOWN THE CANADIAN HIGH PLAINS. THE RESULT OF THIS
INTERACTION WILL BE A DEVELOPING AND EXPANDING AREA OF SNOW
COMMENCING TODAY OVER IDAHO TO WESTERN MONTANA, THEN SPREADING
SOUTHEASTWARD INTO MUCH OF WYOMING AND PORTIONS OF THE GREAT BASIN
ON THANKSGIVING DAY. BY THANKSGIVING EVENING INTO FRIDAY MORNING,
MUCH OF COLORADO AND UTAH AS WELL AS NEARBY CENTRAL HIGH PLAINS
WILL LIKELY SEE SNOW PICKING UP IN INTENSITY, ALONG WITH
INCREASINGLY STRONG AND GUSTY WINDS FROM THE NORTH. PORTIONS OF
WYOMING COULD SEE A FOOT OF SNOW ON THE GROUND BY FRIDAY EVENING.
TEMPERATURES ARE EXPECTED TO BE MUCH ABOVE AVERAGE ACROSS THE
NORTHERN U.S. INTO WEDNESDAY, FOLLOWED BY MUCH COLDER TEMPERATURES
AND THE ABOVE MENTIONED SNOW THREAT FOR THANKSGIVING DAY. THIS
COLDER THAN AVERAGE AIR WILL CONTINUE TO SINK SOUTHWARD AT THE END
OF THE WEEK INTO THIS WEEKEND ACROSS THE CENTRAL ROCKIES AND INTO
THE CENTRAL TO SOUTHERN PLAINS. COOLER THAN AVERAGE TEMPERATURES
ALSO LIKELY ACROSS THE SOUTHEAST QUARTER OF THE NATION ON
THANKSGIVING, WITH THESE COOLER THAN AVERAGE TEMPERATURES THEN
TAKING HOLD ACROSS MUCH OF THE NATION BY THIS WEEKEND, SAVE FOR
THE IMMEDIATE WEST COAST AND SOUTH FLORIDA.
HAVE A SAFE AND HAPPY THANKSGIVING!
KONG/ORAVEC
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