490
FXUS01 KWBC 070732
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
332 AM EDT THU SEP 07 2023
VALID 12Z THU SEP 07 2023 - 12Z SAT SEP 09 2023
... ON THURSDAY, THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS
OVER PARTS OF THE NORTHEAST AND MID-ATLANTIC/CENTRAL
APPALACHIANS...
...THERE ARE HEAT ADVISORIES AND EXCESSIVE HEAT WARNINGS OVER
PARTS OF THE SOUTHERN PLAINS/LOWER MISSISSIPPI VALLEY AND HEAT
ADVISORIES OVER THE NORTHEAST ON THURSDAY...
...AIR QUALITY ALERTS OVER PARTS OF THE CENTRAL PLAINS, UPPER
MISSISSIPPI VALLEY, AND MAINE ON THURSDAY...
ON THURSDAY, A FRONT EXTENDING FROM THE GREAT LAKES/OHIO VALLEY,
TENNESSEE VALLEY, LOWER MISSISSIPPI VALLEY, AND SOUTHERN PLAINS
WILL MOVE EASTWARD TO THE EASTERN SEA BOARD AND GULF COAST BY
SATURDAY. THE SYSTEM WILL CREATE SHOWERS AND THUNDERSTORMS FROM
THE NORTHEAST TO THE EASTERN GULF COAST ON THURSDAY. THE FRONT
WILL ALSO PRODUCE SHOWERS AND SEVERE THUNDERSTORMS OVER PARTS OF
NEW YORK STATE, EASTERN PENNSYLVANIA, AND MID-ATLANTIC. THEREFORE,
THE SPC HAS ISSUED A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER
PARTS OF THE NORTHEAST AND MID-ATLANTIC/CENTRAL APPALACHIANS
THROUGH FRIDAY MORNING. THE HAZARDS ASSOCIATED WITH THESE
THUNDERSTORMS ARE FREQUENT LIGHTNING, SEVERE THUNDERSTORM WIND
GUSTS, HAIL, AND A MINIMAL THREAT OF TORNADOES.
ON FRIDAY, THE THREAT OF SEVERE THUNDERSTORMS CONTINUES. AS THE
FRONT MOVES EASTWARD, SHOWERS AND SEVERE THUNDERSTORMS WILL
DEVELOP OVER PARTS OF SOUTHERN NEW ENGLAND TO THE NORTHERN
MID-ATLANTIC. THEREFORE, THE SPC HAS ISSUED A SLIGHT RISK OF
SEVERE THUNDERSTORMS OVER PARTS OF SOUTHERN NEW ENGLAND TO THE
NORTHERN MID-ATLANTIC FROM FRIDAY INTO SATURDAY MORNING. THE
HAZARDS ASSOCIATED WITH THESE THUNDERSTORMS ARE FREQUENT
LIGHTNING, SEVERE THUNDERSTORM WIND GUSTS, HAIL, AND A MINIMAL
THREAT OF TORNADOES. ONCE AGAIN, SHOWERS AND THUNDERSTORMS WILL
EXTEND FROM THE NORTHEAST SOUTHWARD TO THE SOUTHEAST ON FRIDAY.
MEANWHILE, ON THURSDAY, A WEAK FRONT EXTENDING FROM THE NORTHERN
PLAINS TO THE SOUTHERN PLAINS WILL AID IN PRODUCING SHOWERS AND
THUNDERSTORMS OVER THE AREA WITH A THREAT OF STRONG TO SEVERE
THUNDERSTORMS. IN ADDITION, ANOTHER SLOW-MOVING FRONT OVER THE
NORTHERN ROCKIES WILL MOVE EASTWARD TO THE NORTHERN PLAINS/UPPER
MISSISSIPPI VALLEY BY SATURDAY. THE BOUNDARY WILL PRODUCE SHOWERS
AND THUNDERSTORMS OVER PARTS OF THE NORTHERN ROCKIES LATE ON
THURSDAY. ON FRIDAY, THE SHOWERS AND THUNDERSTORMS WILL EXPAND
INTO THE NORTHERN HIGH PLAINS AND NORTHERN PLAINS OVERNIGHT FRIDAY
INTO SATURDAY.
ON FRIDAY, A WAVE OF LOW PRESSURE OVER THE SOUTHERN PLAINS WILL
ADD IN, PRODUCING SHOWERS AND SEVERE THUNDERSTORMS OVER PARTS OF
NORTHEASTERN TEXAS AND EXTREME SOUTHEASTERN OKLAHOMA. THEREFORE,
THE SPC HAS ISSUED A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER
PARTS OF THE SOUTHERN PLAINS FROM FRIDAY INTO SATURDAY MORNING.
THE HAZARDS ASSOCIATED WITH THESE THUNDERSTORMS ARE FREQUENT
LIGHTNING, SEVERE THUNDERSTORM WIND GUSTS, HAIL, AND A MINIMAL
THREAT OF TORNADOES.
MOREOVER, SMOKE FROM WILDFIRES IN WEST-CENTRAL CANADA WILL REDUCE
AIR QUALITY OVER PARTS OF THE CENTRAL PLAINS AND UPPER MISSISSIPPI
VALLEY, PROMPTING AIR QUALITY WARNINGS OVER THE AREA.
ADDITIONALLY, WILDFIRE SMOKE OVER EASTERN CANADA WILL DRIFT INTO
MAINE, STARTING AIR QUALITY WARNINGS OVER MAINE.
LASTLY, UPPER-LEVEL RIDGING WILL LINGER OVER PARTS OF THE
NORTHEAST ON THURSDAY. UNFORTUNATELY, THE HOT TEMPERATURES WILL
REMAIN OVER NEW ENGLAND, PROMPTING HEAT ADVISORIES OVER THE AREA.
IN ADDITION, AN UPPER-LEVEL HIGH WILL RETURN TO TEXAS ON THURSDAY,
AIDING IN DEVELOPING HOT TEMPERATURES OVER THE REGION, PROMPTING
HEAT ADVISORIES AND EXCESSIVE HEAT WARNINGS OVER THE SOUTHERN
PLAINS/LOWER MISSISSIPPI VALLEY. THE HOT TEMPERATURES WILL
CONTINUE OVER THE AREA THROUGH SATURDAY.
ZIEGENFELDER
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