347
FXUS01 KWBC 200802
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
259 AM EST THU FEB 20 2025
VALID 12Z THU FEB 20 2025 - 12Z SAT FEB 22 2025
...LIGHT SNOW/SNOW SHOWERS EXPECTED TO MOVE ACROSS THE CENTRAL
APPALACHIANS AND THE MID-ATLANTIC TODAY AS WINTER STORM ENDS
ACROSS EASTERN VIRGINIA AND EASTERN NORTH CAROLINA BUT LAKE-EFFECT
SNOWS CONTINUE INTO FRIDAY...
...WIDESPREAD RECORD COLD TEMPERATURES CONTINUE THROUGH FRIDAY
FROM THE CENTRAL PLAINS TO THE GULF COAST BEFORE WARMING TREND
SETS IN BY THE WEEKEND...
...SNOW WILL REACH INTO THE CENTRAL ROCKIES TODAY BEFORE THE NEXT
ROUND OF UNSETTLED WEATHER MOVING INTO THE PACIFIC NORTHWEST
FRIDAY AND INTO THE WEEKEND...
AS A LOW PRESSURE SYSTEM CONTINUES TO TRACK NORTHEASTWARD AWAY
FROM THE MID-ATLANTIC COAST EARLY THIS THURSDAY MORNING,
ACCUMULATING SNOWFALL IS COMING TO AN END ACROSS VIRGINIA AND
NORTH CAROLINA EASTERN SHORES. BEHIND THE DEPARTING CYCLONE, A
LARGE POOL OF ARCTIC AIR ASSOCIATED WITH AN EXPANSIVE HIGH
PRESSURE SYSTEM WILL SLIDE SLOWLY EASTWARD FROM THE MID-SECTION OF
THE COUNTRY TOWARD THE EAST COAST. INSTABILITY ASSOCIATED WITH AN
UPPER-LEVEL TROUGH AHEAD OF THE CORE OF THE ARCTIC AIR WILL BRING
A SWATH OF LIGHT SNOW AND SNOW SHOWERS ACROSS THE CENTRAL
APPALACHIANS AND PORTIONS OF THE MID-ATLANTIC STATES TODAY WITH A
FEW INCHES OF ACCUMULATION POSSIBLE ACROSS EASTERN WEST VIRGINIA.
MEANWHILE, LAKE-EFFECT SNOWS WILL CONTINUE INTO FRIDAY, ESPECIALLY
OVER THE LOWER GREAT LAKES BEFORE A WARMING TREND SETS IN BY THIS
WEEKEND.
PRIOR TO THE ARRIVAL OF MILDER TEMPERATURES HOWEVER, MUCH OF THE
EASTERN TWO-THIRDS OF THE COUNTRY WILL REMAIN IN A DEEP FREEZE.
IN FACT, WIDESPREAD RECORD COLD TEMPERATURES ARE EXPECTED TODAY
AND FRIDAY FROM THE CENTRAL PLAINS DOWN TO THE GULF COAST WHERE
BELOW FREEZING TEMPERATURES ARE COMMON THIS MORNING. ALTHOUGH NOT
AT RECORD COLD LEVELS, PORTIONS OF THE NORTHERN PLAINS COULD STILL
EXPERIENCE 40 BELOW ZERO EARLY THIS MORNING. MUCH OF THE CENTRAL
PLAINS WILL RECOVER ONLY INTO THE TEENS THIS AFTERNOON. PLEASE BE
SURE TO DRESS IN LAYERS INCLUDING A HAT, FACE MASK, AND GLOVES IF
YOU MUST GO OUTSIDE! BY SATURDAY MORNING THE ARCTIC HIGH PRESSURE
SYSTEM WILL STILL DOMINATE THE EASTERN TWO-THIRDS OF THE COUNTRY
BUT EARLY MORNING TEMPERATURES WILL MODERATE TO POSITIVE
TERRITORIES FOR MOST AREAS. ABOVE NORMAL TEMPERATURES WILL EMERGE
FRIDAY NIGHT INTO SATURDAY MORNING ACROSS THE NORTHERN PLAINS AS
WINDS TURN SOUTHWESTERLY, BRINGING MILDER AIR FROM THE WESTERN
U.S. DOWN THE ROCKIES.
WITH THE DEPARTURE OF THE INTENSIFYING CYCLONE OFF THE EAST COAST,
MUCH OF THE MAINLAND U.S. WILL ENTER A PERIOD OF LESS ACTIVE
WEATHER. HOWEVER, UNSETTLED WEATHER IS EXPECTED TO CONTINUE
ACROSS THE PACIFIC NORTHWEST WITH CONTINUED REGULAR ARRIVAL OF
WEATHER SYSTEMS FROM THE PACIFIC. THE BATCH OF SNOW ASSOCIATED
WITH A WEAKENING UPPER-LEVEL DISTURBANCE PUSHING ACROSS THE
INTERMOUNTAIN WEST THIS MORNING WILL REACH INTO THE CENTRAL
ROCKIES LATER TODAY. BY FRIDAY, ANOTHER PACIFIC SYSTEM WILL BRING
THE NEXT ROUND OF PRECIPITATION INTO THE PACIFIC NORTHWEST AND
SPREADING FURTHER INLAND TOWARD IDAHO AS MOUNTAIN SNOWS BY
SATURDAY MORNING. THE SOUTHWEST WILL REMAIN DRY THROUGH THE
FORECAST PERIOD.
KONG
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