396
FXUS01 KWBC 181829
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
228 PM EDT SAT APR 18 2026
VALID 00Z SUN APR 19 2026 - 00Z TUE APR 21 2026
...THUNDERSTORMS ARE SET TO CONTINUE TODAY FROM THE UPPER OHIO
VALLEY, WHERE SEVERE STORMS ARE POSSIBLE, TO THE SOUTHERN PLAINS...
...A DRASTIC COOL DOWN ACROSS THE CENTRAL TO EASTERN U.S. IS
EXPECTED IN THE COMING DAYS FOLLOWING A WEEK OF UNSEASONABLY WARM
TEMPERATURES...
...DRY AND GUSTY POST-FRONTAL CONDITIONS WILL LEAD TO A FIRE
WEATHER THREAT OVER PORTIONS OF THE CENTRAL AND SOUTHERN HIGH
PLAINS THIS WEEKEND AND EARLY NEXT WEEK...
WIDESPREAD SHOWERS AND THUNDERSTORMS WILL CONTINUE AHEAD OF A COLD
FRONT TODAY, PUSHING THROUGH THE INTERIOR NORTHEAST, THROUGH THE
OHIO/TENNESSEE/LOWER MISSISSIPPI VALLEYS AND INTO TEXAS. STRONGER
WIND FIELDS ALOFT WITH AN APPROACHING UPPER-TROUGH OVER PORTIONS
OF THE LOWER GREAT LAKES INTO THE UPPER OHIO VALLEY WILL LEAD TO
SUFFICIENT SHEAR FOR MORE ROBUST THUNDERSTORMS CAPABLE OF
PRODUCING SEVERE WEATHER. THE STORM PREDICTION CENTER HAS
MAINTAINED A SLIGHT RISK (LEVEL 2/5) FOR PARTS OF THE UPPER OHIO
VALLEY, WITH THUNDERSTORMS POTENTIALLY BRINGING DAMAGING WINDS AND
HAIL. IN ADDITION, AN ISOLATED FLASH FLOOD RISK WILL EXIST AS WELL
FOR BOTH PARTS OF THE NORTHEAST AND THE GULF COAST. THE COLD FRONT
IS THEN FORECAST TO REACH AND BRING PRECIPITATION TO THE EAST
COAST OVERNIGHT SATURDAY AND INTO EARLY SUNDAY MORNING, WITH MOST
LOCATIONS DRYING OUT BY MID-DAY AS THE FRONT CLEARS THE COAST.
WITH THE PASSAGE OF THE FRONT, WINTRY MIX WILL BE POSSIBLE FOR
HIGHER ELEVATIONS OF THE INTERIOR NORTHEAST, ALTHOUGH
ACCUMULATIONS WILL REMAIN LIGHT AND LIMITED. THE COLD FRONT IS
EXPECTED TO STALL OFF THE COAST OF SOUTH TEXAS OVERNIGHT
SATURDAY/SUNDAY MORNING. HIGH MOISTURE CONTENT AND LIGHT EASTERLY
ONSHORE FLOW WILL CONTINUE TO SUPPORT THUNDERSTORMS THROUGHOUT THE
DAY SUNDAY AND THROUGH MONDAY IN SOUTHERN TEXAS, POSING AN
ISOLATED FLASH FLOOD RISK.
AN APPROACHING PACIFIC SYSTEM WILL BEGIN TO BRING PRECIPITATION TO
THE COASTAL PACIFIC NORTHWEST SUNDAY, BEFORE SPREADING TOWARDS
NORTHERN CALIFORNIA BY EARLY MONDAY. PRECIPITATION CHANCES WILL
INCREASE MONDAY AND WILL BRING THE POSSIBILITY OF ISOLATED
FLOODING. IN THE PLAINS, AS A RESULT OF THE PASSAGE OF A FEW COLD
FRONTS, GUSTY AND DRY POST-FRONTAL CONDITIONS ACROSS PORTIONS OF
THE PLAINS WILL BRING A CRITICAL RISK OF FIRE WEATHER (LEVEL 2/3)
FOR CENTRAL/WESTERN NEBRASKA TODAY AND SOUTHWEST KANSAS, SOUTHEAST
COLORADO, NORTHEAST NEW MEXICO, AND THE OKLAHOMA/TEXAS PANHANDLES
SUNDAY.
THE AFOREMENTIONED COLD FRONT WILL THEN BRING A DRASTIC COOLDOWN
TO MUCH OF THE CENTRAL TO EASTERN U.S. FOLLOWING A WEEK OF WELL
ABOVE-AVERAGE-TEMPERATURES. MUCH COOLER HIGHS WILL SPREAD
THROUGHOUT THE MIDWEST AND THE PLAINS TODAY, WITH TEMPERATURES AS
LOW AS THE MID 30S IN THE NORTHERN PLAINS. REGIONS INCLUDING THE
NORTHEAST, MISSISSIPPI VALLEY, AND MID-ATLANTIC WILL SEE COOLER
TEMPERATURES BEGINNING SUNDAY. HIGH TEMPERATURES INTO THE 40S AND
50S FOR THE NORTHEAST, 50S AND 60S THROUGH THE MID-ATLANTIC AND
OHIO VALLEY, AND 60S AND LOW 70S INTO THE SOUTHEAST ARE EXPECTED
SUNDAY. WARMER TEMPERATURES IN THE 80S WILL CONTINUE ALONG THE
SOUTHEAST ATLANTIC COAST INTO FLORIDA SUNDAY BEFORE HIGHS DROP
INTO THE 70S MONDAY. MEANWHILE, A RENEWED WARM-UP WILL COMMENCE
ACROSS THE WESTERN U.S. AS AN UPPER-LEVEL RIDGE BEGINS TO BUILD.
FORECAST HIGHS ACROSS THE INTERIOR WEST WILL JUMP FROM THE 50S AND
60S TODAY, INTO THE 60S AND 70S SUNDAY. ABOVE AVERAGE HIGHS WILL
ALSO GRADUALLY SPREAD INTO THE NORTHERN/CENTRAL PLAINS, WITH HIGHS
REACHING INTO THE 80S FOR SOME LOCATIONS BY MONDAY. THE WEST COAST
WILL REMAIN MORE TEMPERATE, WITH HIGHS HOLDING IN THE 60S IN THE
PACIFIC NORTHWEST AND 60S AND 70S IN CALIFORNIA THIS WEEKEND.
MEANWHILE, THE DESERT SOUTHWEST WILL CONTINUE TO EXPERIENCE
SLIGHTLY ABOVE-AVERAGE TEMPERATURES, REACHING THE LOWER 90S.
BLANCO-ALCALA/PUTNAM
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