614
FXUS01 KWBC 191011
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
508 AM EST WED FEB 19 2025
VALID 12Z WED FEB 19 2025 - 12Z FRI FEB 21 2025
...WINTER STORM CONTINUES TO BRING A QUICK ROUND OF ACCUMULATING
SNOW FROM THE MID-MISSISSIPPI VALLEY THROUGH THE SOUTHERN
MID-ATLANTIC TODAY WITH AREAS OF SLEET/FREEZING RAIN JUST TO THE
SOUTH, AND AREAS OF HEAVY RAIN NEAR THE GULF COAST...
...RECORD COLD TEMPERATURES WILL SETTLE SOUTH TOWARD THE GULF
COAST THROUGH THE NEXT COUPLE OF DAYS WHILE DANGEROUSLY COLD WIND
CHILLS OVER THE NORTHERN PLAINS WILL BEGIN TO MODERATE...
...ANOTHER ROUND OF MOUNTAIN SNOW AND LOWER ELEVATION RAIN MOVING
INTO THE PACIFIC NORTHWEST TODAY WILL SPREAD INTO THE NORTHERN AND
CENTRAL ROCKIES THURSDAY INTO FRIDAY...
AS A LARGE ARCTIC HIGH PRESSURE SYSTEM CONTINUES SETTLING
SOUTHWARD INTO THE EASTERN TWO-THIRDS OF THE COUNTRY, A LOW
PRESSURE SYSTEM IS DEVELOPING JUST OFF THE GULF COAST ALONG THE
ARCTIC FRONTAL BOUNDARY. AREAS NEAR THE GULF COAST ARE EXPECTED
TO SEE A ROUND OF MODERATE TO HEAVY RAIN AS THE DEVELOPING SYSTEM
PASSES JUST TO THE SOUTH. SOME THUNDERSTORMS ARE ALSO EXPECTED TO
MOVE ACROSS NORTHERN FLORIDA LATER TODAY INTO TONIGHT WITH THE
PASSAGE OF THE COLD FRONT. IN ADDITION, A SWATH OF SNOW WELL TO
THE NORTH OF THE DEVELOPING SYSTEM WILL QUICKLY SPREAD EAST FROM
THE MID-MISSISSIPPI/TENNESSEE VALLEYS THIS MORNING BEFORE MOVING
THROUGH THE SOUTHERN MID-ATLANTIC REGION THIS AFTERNOON INTO
TONIGHT. A FEW TO LOCALLY 8+ INCHES OF NEW SNOW CAN BE EXPECTED
IN THESE AREAS ESPECIALLY ACROSS SOUTHEASTERN VIRGINIA INTO
NORTHEASTERN NORTH CAROLINA AS THE LOW PRESSURE SYSTEM BEGINS TO
RAPIDLY INTENSIFY JUST OFF THE CAROLINA COASTLINE THIS EVENING.
THE CYCLONE WILL THEN QUICKLY MOVE AWAY FROM THE EAST COAST,
ENDING THE THREAT OF ADDITIONAL ACCUMULATING SNOWFALL FOR THE
MID-ATLANTIC COAST BY EARLY ON THURSDAY. AREAS OF SLEET/FREEZING
RAIN ARE ALSO EXPECTED JUST TO THE SOUTH OF THE SWATH OF SNOWFALL
FROM THE INTERIOR DEEP SOUTH THIS MORNING TO THE COASTAL PLAINS OF
NORTH CAROLINA THIS AFTERNOON INTO EARLY THIS EVENING.
BEHIND THE DEPARTING CYCLONE, THE CORE OF THE ARCTIC AIR WILL BE
USHERED ACROSS THE OHIO VALLEY ON THURSDAY REACHING INTO THE
MID-ATLANTIC EARLY ON FRIDAY. SCATTERED SNOW SHOWERS WILL MOVE
THROUGH THESE AREAS IN THE PROCESS ALONG WITH FALLING
TEMPERATURES. WIND CHILLS WILL BE AT DANGEROUSLY COLD LEVELS THIS
MORNING OVER THE NORTHERN PLAINS AS A 1050+ MB HIGH PRESSURE
SYSTEM EDGES CLOSER. BELOW FREEZING TEMPERATURES WILL ALSO REACH
INTO THE GULF COAST WITH RECORD COLD TEMPERATURES STRETCHING FROM
THE CENTRAL PLAINS DOWN TO THE GULF COAST. AS THE HIGH PRESSURE
SYSTEM SLIDES SOUTHEASTWARD, TEMPERATURES WILL PROGRESSIVELY
MODERATE OVER THE NEXT COUPLE OF DAYS. NEVERTHELESS, MUCH COLDER
THAN NORMAL CONDITIONS WILL DOMINATE THE EASTERN TWO-THIRDS OF THE
COUNTRY. BE SURE TO DRESS IN LAYERS INCLUDING A HAT, FACE MASK,
AND GLOVES IF YOU MUST GO OUTSIDE! MEANWHILE, LAKE-EFFECT SNOW
WILL ONCE AGAIN IMPACT THE SNOW BELT REGION DOWNWIND FROM THE
GREAT LAKES.
ANOTHER ROUND OF UNSETTLED WEATHER ASSOCIATED WITH A PACIFIC
SYSTEM IS NOW ENTERING THE PACIFIC NORTHWEST, BRINGING A PERIOD OF
MODERATE TO LOCALLY HEAVY RAIN NEAR THE COAST AND SNOW FOR THE
HIGHER ELEVATIONS. THE PRECIPITATION WILL MOVE WELL INLAND,
PASSING IDAHO AND THE NORTHERN GREAT BASIN TODAY, BEFORE REACHING
INTO THE NORTHERN TO CENTRAL ROCKIES ON THURSDAY AS MOUNTAIN SNOWS
AND THEN GRADUALLY TAPERS OFF. THE SOUTHWEST WILL REMAIN DRY
THROUGH THE FORECAST PERIOD.
KONG
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