653
FXUS01 KWBC 050727
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
327 AM EDT TUE SEP 05 2023
VALID 12Z TUE SEP 05 2023 - 12Z THU SEP 07 2023
...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER PARTS OF
THE UPPER MISSISSIPPI VALLEY/UPPER GREAT LAKES ON TUESDAY...
...THERE ARE HEAT ADVISORIES OVER PARTS OF THE NORTHEAST AND
MID-ATLANTIC ON TUESDAY...
...AIR QUALITY ALERTS OVER PARTS OF THE NORTHERN HIGH PLAINS ON
TUESDAY...
A FRONT OVER THE UPPER MIDWEST WILL MOVE EASTWARD TO THE GREAT
LAKES, OHIO VALLEY, AND LOWER MISSISSIPPI VALLEY BY THURSDAY. ON
TUESDAY, THE SYSTEM WILL CREATE SHOWERS AND THUNDERSTORMS FROM THE
UPPER MISSISSIPPI VALLEY ROUGHLY SOUTHWESTWARD TO THE SOUTHERN
PLAINS. THE FRONT WILL ALSO PRODUCE SHOWERS AND SEVERE
THUNDERSTORMS OVER PARTS OF EASTERN MINNESOTA, NORTHWESTERN
WISCONSIN, AND EXTREME NORTHWEST MICHIGAN. THEREFORE, THE SPC HAS
ISSUED A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER PARTS OF THE
UPPER MISSISSIPPI VALLEY/UPPER GREAT LAKES THROUGH WEDNESDAY
MORNING. THE HAZARDS ASSOCIATED WITH THESE THUNDERSTORMS ARE
FREQUENT LIGHTNING, SEVERE THUNDERSTORM WIND GUSTS, HAIL, AND A
FEW TORNADOES.
ON WEDNESDAY, THE THREAT OF SEVERE THUNDERSTORMS REDUCES SLIGHTLY.
AS THE FRONT MOVES EASTWARD, SHOWERS AND STRONG TO SEVERE
THUNDERSTORMS WILL DEVELOP OVER PARTS OF MICHIGAN, MOST OF
INDIANA, WESTERN OHIO/KENTUCKY/TENNESSEE, NORTHEASTERN ARKANSAS,
AND NORTHERN MISSISSIPPI. THEREFORE, THE SPC HAS ISSUED A MARGINAL
RISK OF SEVERE THUNDERSTORMS OVER PARTS OF THE GREAT LAKES/OHIO
VALLEY, TENNESSEE, AND LOWER MISSISSIPPI VALLEYS FROM WEDNESDAY
INTO THURSDAY MORNING. THE HAZARDS ASSOCIATED WITH THESE
THUNDERSTORMS ARE FREQUENT LIGHTNING, SEVERE THUNDERSTORM WIND
GUSTS, HAIL, AND A MINIMAL THREAT OF TORNADOES.
MOREOVER, UPPER-LEVEL ENERGY AND A DEVELOPING FRONT OVER THE
NORTHERN ROCKIES WILL PRODUCE SHOWERS AND THUNDERSTORMS OVER PARTS
OF THE NORTHERN INTERMOUNTAIN REGION/NORTHERN ROCKIES OVERNIGHT
WEDNESDAY.
MEANWHILE, UPPER-LEVEL RIDGING EXTENDING FROM THE GREAT LAKES TO
THE NORTHEAST WILL PROMOTE HOT TEMPERATURES OVER THE REGION,
PROMPTING HEAT ADVISORIES OVER THE NORTHEAST AND MID-ATLANTIC ON
TUESDAY. IN ADDITION, THE HOT TEMPERATURES WILL CONTINUE OVER
PARTS OF THE UPPER MIDWEST ON TUESDAY. THE HOT TEMPERATURES WILL
CONTINUE OVER PORTIONS OF THE NORTHEAST/MID-ATLANTIC ON TUESDAY
INTO THURSDAY.
LASTLY, SMOKE FROM WILDFIRES IN WEST-CENTRAL CANADA WILL REDUCE
AIR QUALITY OVER PARTS OF THE NORTHERN HIGH PLAINS, PROMPTING AIR
QUALITY WARNINGS OVER THE AREA.
ZIEGENFELDER
GRAPHICS AVAILABLE AT
HTTPS://WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP
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