974
FXUS01 KWBC 092006
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
400 PM EDT WED APR 09 2025
VALID 00Z THU APR 10 2025 - 00Z SAT APR 12 2025
...MIXED RAIN/WET SNOW FROM THE GREAT LAKES TO INTERIOR NEW
ENGLAND WILL BE FOLLOWED BY A DRENCHING COLD RAIN ON FRIDAY OVER
THE MID-ATLANTIC...
...BELOW NORMAL TEMPERATURES CONTINUE ACROSS THE EAST WHILE WELL
ABOVE NORMAL AND NEAR-RECORD WARMTH BUILDS ACROSS THE WEST...
...SEVERE WEATHER EXPECTED ACROSS PORTIONS OF THE MID/DEEP SOUTH
AND TENNESSEE VALLEY ON THURSDAY...
..UNSETTLED WEATHER PERSISTS OVER THE PACIFIC NORTHWEST
THE MAIN WEATHER MAKER OVER THE NEXT COUPLE OF DAYS ACROSS THE
COUNTRY WILL BE A LOW PRESSURE SYSTEM THAT IS FORECAST TO
PROGRESSIVELY DEVELOP OVER THE EASTERN U.S. THE UNUSUALLY CHILLY
TEMPERATURES ACROSS MUCH OF THE EASTERN U.S. TODAY ARE SETTING UP
FOR THE DEVELOPMENT OF MIXED RAIN AND WET SNOW FROM THE GREAT
LAKES TO INTERIOR NEW ENGLAND THROUGH THE NEXT OF COUPLE OF DAYS
AS THE DEVELOPING LOW PRESSURE SYSTEM PASSES WELL TO THE SOUTH.
IT WILL TAKE A COUPLE OF DAYS FOR THE TWO MAIN PIECES OF
UPPER-LEVEL TROUGHS DIPPING INTO THE MID-SECTION OF THE COUNTRY TO
CONSOLIDATE OVER THE EASTERN U.S. ON FRIDAY. AS THESE TROUGHS
BEGIN TO MERGE OVER THE MID-SOUTH, EXTRA INSTABILITY IS FORECAST
TO TRIGGER RAPID DEVELOPMENT OF STRONG TO POSSIBLY SEVERE
THUNDERSTORMS LATE ON THURSDAY INTO EARLY ON FRIDAY. BY FRIDAY, A
LOW PRESSURE SYSTEM IS FORECAST TO INTENSIFY AS IT BEGINS TO TRACK
NORTHEASTWARD UP INTO THE MID-ATLANTIC REGION WHERE A DRENCHING
COLD RAIN IS EXPECTED TO DEVELOP AND EXPAND NORTHEASTWARD. THE
INCREASING NORTHEASTERLY WINDS WILL MAKE FOR A GUSTY AND RAINY END
ON FRIDAY ACROSS THE NORTHERN MID-ATLANTIC WHILE THE SOUTHERN
MID-ATLANTIC WILL COME UNDER AN INCREASING THREAT OF STRONG
THUNDERSTORMS AS SOUTHERLY FLOW STRENGTHENS AHEAD OF A SHARPENING
COLD FRONT.
IN STARK CONTRAST, A LARGE UPPER-LEVEL RIDGE WILL BUILD OVER THE
WESTERN U.S. THE NEXT FEW DAYS, RESULTING IN MAINLY DRY WEATHER
AND WELL ABOVE NORMAL TEMPERATURES. IN FACT, HIGH TEMPERATURE
ANOMALIES ACROSS THE WEST WILL CLIMB TO BETWEEN 10 AND 30 DEGREES
ABOVE SEASONAL NORMAL THROUGH FRIDAY, TRANSLATING TO HIGHS IN THE
50S AND 60S ACROSS THE FAR NORTH/PACIFIC NORTHWEST, TO THE 70S AND
80S OUTSIDE OF THE MOUNTAINS FARTHER SOUTH, TO THE 90S AND LOWER
100S ACROSS PORTIONS OF THE DESERT SOUTHWEST AND SOUTHERN PLAINS.
HIGH TEMPERATURES MAY EVEN APPROACH OR POSSIBLY BREAK RECORDS FOR
MANY PLACES THURSDAY, FRIDAY AND INTO THE WEEKEND.
MEANWHILE, UNSETTLED WEATHER IS FORECAST TO CONTINUE OVER THE
PACIFIC NORTHWEST AS FAIRLY ENERGETIC FRONTS AHEAD OF PACIFIC
CYCLONES ARRIVE AT REGULAR INTERVALS AND RIDE UP THE NORTHERN
EXTENT OF THE STRONG UPPER RIDGE IN THE SOUTHWEST. THE NEXT WAVE
OF MOISTURE IS FORECAST TO MOVE INTO THE REGION ON THURSDAY BEFORE
THE SYSTEM PUSHES FARTHER INLAND WITH HIGH-ELEVATION SNOW FROM THE
INTERIOR PACIFIC NORTHWEST INTO THE NORTHERN ROCKIES FROM THURSDAY
NIGHT INTO FRIDAY.
KONG/MILLER
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