783
FXUS01 KWBC 201925
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
324 PM EDT SAT APR 20 2024
VALID 00Z SUN APR 21 2024 - 00Z TUE APR 23 2024
..THERE IS A SLIGHT RISK OF EXCESSIVE RAINFALL OVER PARTS OF THE
SOUTHERN PLAINS/LOWER MISSISSIPPI VALLEY...
...LIGHT SNOW OVER PARTS OF THE CASCADES ON SATURDAY NIGHT INTO
SUNDAY...
...STRONG TO SEVERE THUNDERSTORMS FROM THE SOUTHERN MID-ATLANTIC,
SOUTHEAST TO THE SOUTHERN PLAINS...
A FRONT EXTENDING FROM THE SOUTHEAST WESTWARD TO THE WESTERN GULF
COAST WILL SLOWLY MOVE SOUTHWARD OF THE FLORIDA PENINSULA BY
MONDAY EVENING. SHOWERS WITH STRONG TO SEVERE THUNDERSTORMS WILL
DEVELOP ALONG THE BOUNDARY. THEREFORE, THE SPC HAS ISSUED A
MARGINAL RISK (LEVEL 1/5) OF SEVERE THUNDERSTORMS OVER PARTS OF
THE MID-ATLANTIC TO THE CENTRAL GULF COAST THROUGH SUNDAY MORNING.
THE HAZARDS ASSOCIATED WITH THESE THUNDERSTORMS ARE FREQUENT
LIGHTNING, SEVERE THUNDERSTORM WIND GUSTS, HAIL, AND A MINIMAL
THREAT OF TORNADOES.
ADDITIONALLY, A SECOND AREA OF SHOWERS WITH STRONG TO SEVERE
THUNDERSTORMS WILL DEVELOP OVER PARTS OF THE SOUTHERN PLAINS.
THEREFORE, THE SPC HAS ISSUED A MARGINAL RISK (LEVEL 1/5) OF
SEVERE THUNDERSTORMS OVER PARTS OF THE SOUTHERN PLAINS THROUGH
SUNDAY MORNING. THE HAZARDS ASSOCIATED WITH THESE THUNDERSTORMS
ARE FREQUENT LIGHTNING, SEVERE THUNDERSTORM WIND GUSTS, HAIL, AND
A FEW TORNADOES.
THE SHOWERS AND THUNDERSTORMS WILL ALSO PRODUCE HEAVY RAIN OVER
PARTS OF THE SOUTHERN PLAINS/LOWER MISSISSIPPI VALLEY. THEREFORE,
THE WPC HAS ISSUED A SLIGHT RISK (LEVEL 2/4) OF EXCESSIVE RAINFALL
WITH THESE THUNDERSTORMS THROUGH SUNDAY MORNING. THE ASSOCIATED
HEAVY RAIN WILL CREATE MAINLY LOCALIZED AREAS OF FLASH FLOODING,
WITH URBAN AREAS, ROADS, SMALL STREAMS, AND LOW-LYING AREAS THE
MOST VULNERABLE.
ON SUNDAY, THE STRONG TO SEVERE THUNDERSTORM THREAT AND THE
EXCESSIVE RAINFALL THREAT HAVE COME TO AN END. HOWEVER, SHOWERS
AND THUNDERSTORMS WILL CONTINUE OVER PARTS OF THE SOUTHEAST TO THE
CENTRAL GULF COAST.
MEANWHILE, A FRONT OVER THE PACIFIC NORTHWEST/NORTHERN
INTERMOUNTAIN REGION WILL MOVE EASTWARD TO THE UPPER MISSISSIPPI
VALLEY TO THE CENTRAL PLAINS AND THEN TO THE GREAT BASIN BY MONDAY
EVENING. THE SYSTEM WILL PRODUCE RAIN OVER PARTS OF THE PACIFIC
NORTHWEST COAST THROUGH SUNDAY EVENING. FURTHERMORE, OVERNIGHT
SATURDAY, LIGHT SNOW WILL DEVELOP OVER THE CASCADES AND PARTS OF
THE NORTHERN INTERMOUNTAIN REGION BY EARLY SUNDAY MORNING, ENDING
OVERNIGHT SUNDAY.
ON MONDAY, AS THE BOUNDARY MOVES ONTO THE PLAINS, A WEAK PLUM OF
MOISTURE FLOWS FROM THE WESTERN GULF OF MEXICO TO THE UPPER
MIDWEST, AIDING IN THE DEVELOPMENT OF RAIN OVER PARTS OF THE
NORTHERN PLAINS AND THE UPPER MISSISSIPPI VALLEY. ELSEWHERE, A
FRONT MOVING ACROSS FLORIDA WILL PRODUCE SHOWERS WITH STRONG TO
SEVERE THUNDERSTORMS.
ZIEGENFELDER
GRAPHICS AVAILABLE AT
HTTPS://WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP
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