008
FXUS01 KWBC 091906
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
305 PM EDT WED SEP 09 2026
VALID 00Z THU SEP 10 2026 - 00Z SAT SEP 12 2026
...THERE IS A SLIGHT RISK (LEVEL 2/4) OF EXCESSIVE RAINFALL OVER
PARTS OF THE MIDDLE MISSISSIPPI VALLEY ON WEDNESDAY...
...THERE IS A SLIGHT RISK (LEVEL 2/4) OF EXCESSIVE RAINFALL OVER
PARTS OF THE SOUTHWEST AND CENTRAL HIGH PLAINS ON WEDNESDAY AND
THE OHIO VALLEY ON THURSDAY....
...THERE IS A SLIGHT RISK (LEVEL 2/5) OF SEVERE THUNDERSTORMS OVER
PARTS OF THE OHIO VALLEY AND LOWER GREAT LAKES ON WEDNESDAY...
...THERE IS A SLIGHT RISK (LEVEL 2/5) OF SEVERE THUNDERSTORMS OVER
PARTS OF THE UPPER MISSISSIPPI VALLEY ON FRIDAY...
A FRONT EXTENDING FROM THE UPPER GREAT LAKES TO THE
CENTRAL/SOUTHERN PLAINS WILL MOVE EASTWARD OFF THE NORTHEAST COAST
BY THURSDAY EVENING WHILE EXTENDING WESTWARD ACROSS THE
MID-ATLANTIC SOUTHWESTWARD TO THE SOUTHERN PLAINS. THE SYSTEM WILL
PRODUCE SHOWERS AND THUNDERSTORMS FROM THE LOWER GREAT LAKES TO
THE CENTRAL/SOUTHERN PLAINS WITH A RISK OF SEVERE THUNDERSTORMS
OVER PARTS OF THE OHIO VALLEY AND LOWER GREAT LAKES. THEREFORE,
THE SPC HAS ISSUED A SLIGHT RISK (LEVEL 2/5) OF SEVERE
THUNDERSTORMS OVER PARTS OF THE OHIO VALLEY AND LOWER GREAT LAKES
THROUGH THURSDAY MORNING. THE HAZARDS ASSOCIATED WITH THESE
THUNDERSTORMS ARE FREQUENT LIGHTNING, SEVERE THUNDERSTORM WIND
GUSTS, HAIL, AND A FEW TORNADOES.
FARTHER ALONG THE FRONT, THE SHOWERS AND THUNDERSTORMS WILL
PRODUCE HEAVY RAIN OVER PARTS OF THE MIDDLE MISSISSIPPI VALLEY AND
CENTRAL PLAINS AND A SECOND AREA OVER THE CENTRAL HIGH PLAINS.
THEREFORE, THE WPC HAS ISSUED A SLIGHT RISK (LEVEL 2/4) OF
EXCESSIVE RAINFALL OVER PARTS OF THE MIDDLE MISSISSIPPI
VALLEY/CENTRAL PLAINS AND THE CENTRAL HIGH PLAINS ON WEDNESDAY
INTO THURSDAY MORNING. THE ASSOCIATED HEAVY RAIN WILL CREATE
MAINLY LOCALIZED AREAS OF FLASH FLOODING, WITH URBAN AREAS, ROADS,
SMALL STREAMS, AND LOW-LYING AREAS BEING THE MOST VULNERABLE.
IN ADDITION, SHOWERS AND THUNDERSTORMS WITH HEAVY RAIN WILL
DEVELOP OVER PARTS OF THE SOUTHWEST ON WEDNESDAY INTO THURSDAY
MORNING. THEREFORE, THE WPC HAS ISSUED A SLIGHT RISK (LEVEL 2/4)
OF EXCESSIVE RAINFALL OVER PARTS OF THE SOUTHWEST ON WEDNESDAY
INTO THURSDAY MORNING. THE ASSOCIATED HEAVY RAIN WILL CREATE
MAINLY LOCALIZED AREAS OF FLASH FLOODING, WITH URBAN AREAS, ROADS,
SMALL STREAMS, AND LOW-LYING AREAS BEING THE MOST VULNERABLE.
ON THURSDAY, THE THREAT OF EXCESSIVE RAINFALL HAS MOVED EASTWARD
TO PARTS OF THE OHIO VALLEY/CENTRAL APPALACHIANS. THEREFORE, THE
WPC HAS ISSUED A SLIGHT RISK (LEVEL 2/4) OF EXCESSIVE RAINFALL
OVER PARTS OF THE OHIO VALLEY/CENTRAL APPALACHIANS THROUGH FRIDAY
MORNING. THE ASSOCIATED HEAVY RAIN WILL CREATE MAINLY LOCALIZED
AREAS OF FLASH FLOODING, WITH URBAN AREAS, ROADS, SMALL STREAMS,
AND LOW-LYING AREAS BEING THE MOST VULNERABLE.
A SECOND FRONT WILL MOVE ONSHORE OVER THE PACIFIC NORTHWEST ON
THURSDAY MORNING AND MOVE INLAND TO THE UPPER MIDWEST, ROUGHLY
WESTWARD TO THE GREAT BASIN. THE BOUNDARY WILL PRODUCE RAIN OVER
PARTS OF THE NORTHERN INTERMOUNTAIN REGION EARLY ON FRIDAY
MORNING. THE RAIN WILL EXPAND ACROSS PARTS OF THE NORTHERN HIGH
PLAINS ON FRIDAY. BY FRIDAY EVENING, SHOWERS AND THUNDERSTORMS
WILL DEVELOP OVER PARTS OF THE UPPER MIDWEST INTO THE CENTRAL
PLAINS. MOREOVER, SHOWERS AND THUNDERSTORMS WILL DEVELOP OVER THE
SOUTHWEST DURING THE AFTERNOON INTO THE LATE EVENING THROUGH
FRIDAY.
ZIEGENFELDER
GRAPHICS AVAILABLE AT
HTTPS://WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP
EXTREME HEAT KEY MESSAGES AVAILABLE AT:
HTTPS://WWW.WPC.NCEP.NOAA.GOV/KEY_MESSAGES/LATESTKEYMESSAGE_1.PNG
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page