605
FXUS01 KWBC 252032
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
431 PM EDT TUE MAR 25 2025
VALID 00Z WED MAR 26 2025 - 00Z FRI MAR 28 2025
...THERE IS A MODERATE RISK OF EXCESSIVE RAINFALL OVER SOUTHERN
TEXAS ON WEDNESDAY AND THURSDAY...
...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER PARTS OF
THE PACIFIC NORTHWEST ON WEDNESDAY...
...LIGHT SNOW FROM THE GREAT LAKES TO THE NORTHEAST ON WEDNESDAY
INTO THURSDAY...
TWO WEAK FRONTS WILL MOVE ACROSS THE GREAT LAKES TO THE NORTHEAST
THROUGH THURSDAY. THE BOUNDARIES WILL PRODUCE LIGHT SNOW OVER
PARTS OF THE GREAT LAKES INTO THE NORTHEAST, WITH THE LIGHT SNOW
ENDING OVER THE GREAT LAKES BY WEDNESDAY NIGHT. THE SNOW WILL
CONTINUE OVER PARTS OF NORTHERN NEW ENGLAND THROUGH THURSDAY
NIGHT. OVERNIGHT WEDNESDAY, THE SECOND FRONT WILL MOVE INTO THE
UPPER GREAT LAKES, PRODUCING LIGHT SNOW OVER PARTS OF THE UPPER
GREAT LAKES OVERNIGHT WEDNESDAY INTO THURSDAY EVENING.
FURTHERMORE, LIGHT RAIN WILL DEVELOP OVER PARTS OF THE LOWER GREAT
LAKES ON THURSDAY EVENING.
MEANWHILE, A THIRD FRONT EXTENDING FROM THE SOUTHERN MID-ATLANTIC
TO THE SOUTHERN PLAINS WILL MOVE EASTWARD OFF THE SOUTHEAST COAST
BY WEDNESDAY MORNING AND SOUTHWARD TO FLORIDA AND THE GULF COAST
BY THURSDAY. THE WESTERN END OF THE BOUNDARY WILL LINGER OVER/NEAR
THE WESTERN GULF COAST BY THURSDAY EVENING. THE BOUNDARY WILL
PRODUCE LIGHT RAIN FROM THE MID-ATLANTIC TO THE OHIO VALLEY EARLY
TUESDAY NIGHT, WITH THE RAIN ENDING BY EARLY WEDNESDAY MORNING.
LIGHT SNOW WILL DEVELOP OVER THE CENTRAL APPALACHIANS BY WEDNESDAY
MORNING, ENDING EARLY WEDNESDAY AFTERNOON.
A WEAK MOISTURE FLOW OFF THE GULF OF AMERICA WILL STREAM NORTHWARD
OVER THE SOUTHERN PLAINS/LOWER MISSISSIPPI VALLEY, PRODUCING
SHOWERS AND THUNDERSTORMS OVER PARTS OF THE REGION OVERNIGHT
TUESDAY. UPPER-LEVEL ENERGY WILL DEVELOP AN UPPER-LEVEL LOW OVER
TEXAS ON WEDNESDAY NIGHT. THE DEVELOPING UPPER-LEVEL LOW WILL PULL
MOVE MOISTURE OFF THE GULF OF AMERICA, PRODUCING SHOWERS AND
THUNDERSTORMS WITH HEAVY RAIN ON WEDNESDAY INTO THURSDAY.
THEREFORE, THE WPC HAS ISSUED A MODERATE RISK (LEVEL 3/4) OF
EXCESSIVE RAINFALL OVER PARTS OF SOUTHERN TEXAS FROM WEDNESDAY
INTO THURSDAY MORNING. NUMEROUS FLASH FLOODING EVENTS ARE
POSSIBLE. MANY STREAMS MAY FLOOD, POTENTIALLY AFFECTING LARGER
RIVERS.
THE EXCESSIVE RAINFALL THREAT WILL CONTINUE OVER THE WESTERN GULF
COAST ON THURSDAY. THEREFORE, THE WPC HAS ISSUED A MODERATE RISK
(LEVEL 3/4) OF EXCESSIVE RAINFALL OVER PARTS OF THE WESTERN GULF
COAST ON THURSDAY. NUMEROUS FLASH FLOODING EVENTS ARE POSSIBLE.
MANY STREAMS MAY FLOOD, POTENTIALLY AFFECTING LARGER RIVERS.
FURTHERMORE, THE MOISTURE OVER THE GULF COAST WILL CONTINUE
NORTHWARD INTO CENTRAL PLAINS/MIDDLE MISSISSIPPI VALLEY, PRODUCING
SHOWERS AND THUNDERSTORMS OVER THE REGION THROUGH THURSDAY EVENING.
IN THE MEANTIME, A FOURTH FRONT OVER THE EASTERN PACIFIC MOVES
ONSHORE OVER THE WEST COAST WEDNESDAY AFTERNOON INTO EVENING,
CONTINUING EASTWARD TO THE NORTHERN ROCKIES TO SOUTHERN CALIFORNIA
BY THURSDAY EVENING. THE SYSTEM WILL PRODUCE SHOWERS AND
THUNDERSTORMS OVER THE PACIFIC NORTHWEST FROM WEDNESDAY AFTERNOON
INTO THURSDAY. IN ADDITION, SOME OF THE THUNDERSTORMS WILL BE
SEVERE. THEREFORE, THE SPC HAS ISSUED A SLIGHT RISK (LEVEL 2/5) OF
SEVERE THUNDERSTORMS OVER THE PACIFIC NORTHWEST FROM WEDNESDAY
THROUGH THURSDAY MORNING. THE HAZARDS ASSOCIATED WITH THESE
THUNDERSTORMS ARE FREQUENT LIGHTNING, SEVERE THUNDERSTORM WIND
GUSTS, HAIL, AND A FEW TORNADOES. THERE IS AN ADDED THREAT OF
HAIL, TWO INCHES OR GREATER OVER THE REGION.
SHOWERS AND THUNDERSTORMS WILL CONTINUE OVER THE PACIFIC NORTHWEST
INTO THE NORTHERN INTERMOUNTAIN REGION AND NORTHERN ROCKIES INTO
THURSDAY EVENING.
OVERNIGHT WEDNESDAY, RAIN WILL DEVELOP OVER PARTS OF NORTHERN
CALIFORNIA AND BY THURSDAY MORNING, AFTER THE FRONT PASSES, SNOW
LEVELS WILL LOWER OVER THE NORTHWEST AND CALIFORNIA. THE STORM
WILL PRODUCE RAIN AND HIGHEST ELEVATION SNOW OVER THE CASCADES
NORTHERN CALIFORNIA AND THE SIERRA NEVADA MOUNTAINS.
ZIEGENFELDER
GRAPHICS AVAILABLE AT
HTTPS://WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP
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