799
FXUS01 KWBC 221912
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
311 PM EDT TUE APR 22 2025
VALID 00Z WED APR 23 2025 - 00Z FRI APR 25 2025
...UNSETTLED WEATHER BEGINS TO EXPAND IN COVERAGE ACROSS PORTIONS
OF THE CENTRAL AND EASTERN U.S. WITH A SEVERE WEATHER AND HEAVY
RAIN THREAT...
...ABOVE AVERAGE, WARM SPRING TEMPERATURES FOR MOST OF THE COUNTRY
CONTINUE THIS WEEK...
UNSETTLED WEATHER WILL BEGIN TO EXPAND IN COVERAGE ACROSS PORTIONS
OF THE CENTRAL AND EASTERN U.S. THE NEXT FEW DAYS AS EMBEDDED
SHORTWAVES IN SOUTHWESTERLY FLOW SPUR MULTIPLE ROUNDS OF SHOWERS
AND THUNDERSTORMS. MOIST SOUTHERLY FLOW AHEAD OF A
QUASI-STATIONARY FRONTAL BOUNDARY DRAPED FROM THE MIDWEST
SOUTHWEST THROUGH THE CENTRAL PLAINS, AND A DRYLINE EXTENDING
SOUTHWARD THROUGH THE SOUTHERN HIGH PLAINS, WILL PROVIDE A BROAD
WARM SECTOR AND HELP TO FOCUS ONE REGION OF STORM DEVELOPMENT. A
SLIGHT RISK OF SEVERE WEATHER (LEVEL 2/5) FROM THE STORM
PREDICTION CENTER (SPC) REMAINS IN EFFECT THROUGH TUESDAY EVENING
ACROSS PORTIONS OF THE CENTRAL PLAINS AND SOUTHERN HIGH PLAINS AS
SOME ISOLATED THUNDERSTORMS AHEAD OF THE DRYLINE WILL CARRY THE
THREAT OF LARGE HAIL AND DAMAGING WINDS. SOME LOCALLY HEAVY
DOWNPOURS AND ISOLATED INSTANCES OF FLASH FLOODING WILL ALSO BE
POSSIBLE MORE BROADLY ACROSS THE SOUTHERN PLAINS INTO TUESDAY
NIGHT. THE COVERAGE AND INTENSITY OF STORMS IS EXPECTED TO PICK UP
WEDNESDAY AND ESPECIALLY INTO THURSDAY. FOR WEDNESDAY, THE SPC HAS
NOTED A SLIGHT RISK OF SEVERE THUNDERSTORMS FOR PORTIONS OF THE
SOUTHERN HIGH PLAINS WHERE SOME ISOLATED INSTANCES OF LARGE HAIL
AND DAMAGING WINDS WILL AGAIN BE POSSIBLE. LOCALLY HEAVY DOWNPOURS
AND ISOLATED FLASH FLOODING WILL ALSO BE POSSIBLE ACROSS THE
CENTRAL AND SOUTHERN PLAINS. ON THURSDAY, AN INCREASINGLY MOIST
AND UNSTABLE BOUNDARY LAYER AS WELL AS THE EXPECTATION FOR
MULTIPLE ROUNDS OF STORMS INTO THE EVENING HOURS HAS PROMPTED A
SLIGHT RISK OF EXCESSIVE RAINFALL (LEVEL 2/4) COVERING MUCH OF
EASTERN KANSAS, NORTHERN OKLAHOMA, NORTHWESTERN ARKANSAS, WESTERN
MISSOURI, FAR SOUTHWESTERN IOWA, AND FAR SOUTHEASTERN NEBRASKA FOR
THE THREAT OF A FEW MORE SCATTERED INSTANCES OF FLASH FLOODING.
SHOWERS ARE ALSO EXPECTED IN MOIST POST-FRONTAL UPSLOPE FLOW ALONG
PORTIONS OF THE CENTRAL/NORTHERN HIGH PLAINS AND INTO THE ROCKIES
ON THURSDAY. SOME SNOW IS EXPECTED FOR HIGHER MOUNTAIN ELEVATIONS.
A SECOND QUASI-STATIONARY FRONTAL BOUNDARY STRETCHING FROM THE
CAROLINAS WEST THROUGH THE TENNESSEE VALLEY WILL HELP PROVIDE
ANOTHER FOCUS AREA OF SHOWERS AND THUNDERSTORMS ACROSS THE
SOUTHEAST THE NEXT COUPLE OF DAYS, WITH SOME LOCALLY HEAVY
DOWNPOURS AND ISOLATED FLASH FLOODING POSSIBLE HERE AS WELL.
ELSEWHERE, CONDITIONS WILL BE MOSTLY DRY THROUGH THURSDAY. SOME
LIGHT SHOWERS WILL BE POSSIBLE FOR AREAS OF THE INTERIOR
NORTHEAST, GREAT LAKES, AND THE INTERIOR WEST/NORTHERN CALIFORNIA.
THE SPC HAS NOTED LOW HUMIDITY AND GUSTY WINDS WILL LEAD TO
ELEVATED FIRE WEATHER CONDITIONS (LEVEL 1/3) ACROSS THE
WEST-CENTRAL FLORIDA PENINSULA AS WELL AS FOR PORTIONS OF FAR WEST
TEXAS, SOUTHERN NEW MEXICO, AND SOUTHEASTERN ARIZONA ON WEDNESDAY.
MOST OF THE COUNTRY WILL CONTINUE TO SEE ABOVE AVERAGE, WARM
SPRING TEMPERATURES THIS WEEK. FORECAST HIGHS WEDNESDAY AND
THURSDAY GENERALLY RANGE FROM THE 60S AND 70S IN SOUTHERN NEW
ENGLAND, THE INTERIOR/MOUNTAIN WEST, AND THE WEST COAST/PACIFIC
NORTHWEST; THE 70S AND 80S FOR THE MID-ATLANTIC, MIDWEST, AND
CENTRAL PLAINS; AND THE 80S TO LOW 90S ACROSS THE SOUTHEAST,
SOUTHERN PLAINS, AND SOUTHWEST. AREAS OF THE NORTHERN TIER OF THE
COUNTRY NEAR THE CANADIAN BORDER WILL BE COOLER AND BELOW AVERAGE,
WITH FORECAST HIGHS IN THE 40S AND 50S FOR AREAS OF MAINE AND THE
INTERIOR NORTHEAST, THE UPPER GREAT LAKES, AND PORTIONS OF THE
NORTHERN PLAINS/ROCKIES.
PUTNAM
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