803
FXUS01 KWBC 140720
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
319 AM EDT TUE OCT 14 2025
VALID 12Z TUE OCT 14 2025 - 12Z THU OCT 16 2025
...THERE IS A SLIGHT RISK OF EXCESSIVE RAINFALL OVER PARTS OF
SOUTHERN CALIFORNIA AND SOUTHERN ROCKIES ON TUESDAY...
...HEAVY SNOW OVER PARTS OF THE SIERRA MOUNTAINS ON TUESDAY AND
OVER THE NORTHERN ROCKIES ON WEDNESDAY...
A COASTAL LOW OFF THE MID-ATLANTIC COAST ON TUESDAY WILL MOVE
EASTWARD OUT OVER THE ATLANTIC OCEAN BY TUESDAY EVENING. THE
SYSTEM WILL PRODUCE LIGHT RAIN ACROSS THE NORTHEAST AND
MID-ATLANTIC COASTS, SLOWLY TAPERING OFF BY TUESDAY EVENING.
MEANWHILE, ON TUESDAY, UPPER-LEVEL ENERGY OVER THE CENTRAL
CALIFORNIA COAST WILL MOVE INLAND TO THE ROCKIES BY THURSDAY. THE
STORM WILL PRODUCE RAIN OVER CENTRAL CALIFORNIA AND HEAVY RAIN
OVER PARTS OF SOUTHERN CALIFORNIA. THEREFORE, THE WPC HAS ISSUED A
SLIGHT RISK (LEVEL 2/4) OF EXCESSIVE RAINFALL OVER PARTS OF
SOUTHERN CALIFORNIA THROUGH WEDNESDAY MORNING. THE ASSOCIATED
HEAVY RAIN WILL CAUSE MAINLY LOCALIZED FLASH FLOODING, WITH URBAN
AREAS, ROADS, SMALL STREAMS, AND LOW-LYING AREAS BEING THE MOST
VULNERABLE. THE FLOODING MAY INCLUDE DEBRIS FLOWS IN OR NEAR
RECENTLY BURNED AREAS. MOREOVER, HEAVY SNOW WILL DEVELOP OVER THE
SIERRA NEVADA MOUNTAINS ON TUESDAY, TAPERING OFF BY WEDNESDAY.
IN ADDITION, THE UPPER-LEVEL LOW WILL PULL MOISTURE OFF THE GULF,
AIDING IN SHOWERS AND THUNDERSTORMS WITH HEAVY RAIN OVER PARTS OF
THE SOUTHERN ROCKIES. THEREFORE, THE WPC HAS ISSUED A SLIGHT RISK
(LEVEL 2/4) OF EXCESSIVE RAINFALL OVER PARTS OF THE SOUTHERN
ROCKIES THROUGH WEDNESDAY MORNING. THE ASSOCIATED HEAVY RAIN WILL
CAUSE MAINLY LOCALIZED FLASH FLOODING, WITH URBAN AREAS, ROADS,
SMALL STREAMS, AND LOW-LYING AREAS BEING THE MOST VULNERABLE. THE
FLOODING MAY INCLUDE DEBRIS FLOWS IN OR NEAR RECENTLY BURNED AREAS.
ADDITIONALLY, SHOWERS AND THUNDERSTORMS WILL DEVELOP OVER PARTS OF
THE GREAT BASIN, CENTRAL ROCKIES, CENTRAL PLAINS, AND SOUTHERN
HIGH PLAINS, WITH RAIN AND HIGHEST-ELEVATION SNOW DEVELOPING OVER
THE NORTHERN INTERMOUNTAIN REGION. RAIN WILL EXPAND OVER PARTS OF
THE NORTHERN PLAINS AND UPPER MISSISSIPPI VALLEY BY TUESDAY
EVENING. FURTHERMORE, OVERNIGHT TUESDAY RAIN WILL EXTEND INTO THE
GREAT LAKES, ENDING BY WEDNESDAY MORNING.
ON WEDNESDAY, RAIN WITH EMBEDDED THUNDERSTORMS WILL DEVELOP OVER
PARTS OF THE GREAT BASIN, THE NORTHERN INTERMOUNTAIN REGION, THE
NORTHERN/CENTRAL ROCKIES, THE NORTHERN/CENTRAL PLAINS, AND THE
SOUTHERN HIGH PLAINS. LASTLY, OVERNIGHT ON WEDNESDAY, LIGHT SNOW
WILL DEVELOP OVER PARTS OF THE NORTHERN ROCKIES.
ZIEGENFELDER
GRAPHICS AVAILABLE AT
HTTPS://WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP
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