219
FXUS01 KWBC 211935
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
335 PM EDT WED MAY 21 2025
VALID 00Z THU MAY 22 2025 - 00Z SAT MAY 24 2025
...ISOLATED-SCATTERED SEVERE WEATHER AND FLASH FLOODING POSSIBLE
OVER THE OHIO VALLEY, MID-ATLANTIC, AND GULF COAST TODAY...
...ABOVE AVERAGE TEMPERATURES ACROSS SOUTHERN TIER STATES AND
WEST; BELOW AVERAGE TEMPERATURES FROM NORTHERN PLAINS TO
NORTHEAST/MID-ATLANTIC...
TWO LOW PRESSURE CENTERS WILL CONTINUE TO FOCUS ISOLATED-SCATTERED
SHOWERS AND THUNDERSTORMS ALONG A PAIR OF ASSOCIATED COLD FRONTS
ACROSS THE OHIO VALLEY INTO THE GULF COAST STATES. AFTER A SOAKING
RAINFALL SWEPT THROUGH THIS MORNING, ADDITIONAL DEVELOPMENT COULD
YIELD SCATTERED FLASH FLOODING IN A RELATIVELY CONFINED AREA OVER
PORTIONS OF THE CENTRAL APPALACHIANS, INCLUDING OVER THE
PITTSBURGH METRO WHERE A FLOOD WATCH IS IN EFFECT. TO THE SOUTH
AND WEST OF THE MAIN EXCESSIVE RAINFALL AREA, SPC HAS OUTLOOKED
SEVERAL FOCUSED AREAS OVER THE MID-ATLANTIC, GULF COAST, AND
OZARKS FOR THE THREAT OF SCATTERED SEVERE STORMS CAPABLE OF
PRODUCING LARGE HAIL, STRONG WINDS, AND A TORNADO OR TWO.
ADDITIONAL SEVERE WEATHER IS POSSIBLE TOMORROW OVER THE SOUTHERN
PLAINS, ALTHOUGH WHEN COMPARED TO THE RECENT WIDESPREAD COVERAGE
OF SEVERE AND FLASH FLOODING THE PATTERN FOR THE NEXT TWO DAYS
APPEARS FAR MORE TRANQUIL.
RAINFALL ASIDE, AN UPPER LOW PARKED OVER THE GREAT LAKES AND
NORTHEAST WILL FACILITATE COOLER TEMPERATURES ACROSS THE NORTHERN
PLAINS, MIDWEST, NORTHEAST AND MID-ATLANTIC FOR THE NEXT SEVERAL
DAYS. HIGH TEMPERATURES IN THE 40S, 50S AND LOW 60S WILL REPRESENT
TEMPERATURE ANOMALIES BETWEEN 20-35 DEGREES BELOW AVERAGE.
MEANWHILE, AN UPPER RIDGE IN THE WEST AND CENTRAL U.S. WILL
PRODUCE ABOVE AVERAGE TEMPERATURES ACROSS THE SOUTHERN AND WESTERN
U.S.. SOME HIGH MINIMUM TEMPERATURE RECORDS MAY BE TIED OR BROKEN
IN FLORIDA AND SOUTHERN CALIFORNIA. MEANWHILE, MODERATE TO LOCALLY
MAJOR HEATRISK WILL INCREASE OVER SOUTH TEXAS BENEATH A BUILDING
UPPER RIDGE THROUGH THE REST OF THE WEEK.
ASHERMAN/KEBEDE
GRAPHICS AVAILABLE AT
HTTPS://WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP
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