400
FXUS01 KWBC 090728
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
327 AM EDT TUE SEP 09 2025
VALID 12Z TUE SEP 09 2025 - 12Z THU SEP 11 2025
..WEAK FRONT LINGER OVER FLORIDA
..THERE ARE AIR QUALITY ALERTS OVER PARTS OF THE NORTHWEST
..THERE ARE FROST ADVISORIES OVER PARTS OF THE NORTHEAST
A FRONT EXTENDING FROM THE UPPER MIDWEST ACROSS THE NORTHERN
PLAINS INTO THE NORTHERN ROCKIES WILL BECOME QUASI-STATIONARY FROM
THE MIDDLE MISSISSIPPI VALLEY TO THE NORTHERN ROCKIES BY THURSDAY.
MOISTURE FLOWING NORTHWARD OVER THE PLAINS WILL PRODUCE SHOWERS
AND THUNDERSTORMS OVER PARTS OF THE UPPER GREAT LAKES,
UPPER/MIDDLE MISSISSIPPI VALLEY, AND OVER THE CENTRAL PLAINS
THROUGH TUESDAY NIGHT. FURTHER, ON TUESDAY, THE MOISTURE AND
UPPER-LEVEL ENERGY WILL PRODUCE SHOWERS AND STRONG TO SEVERE
THUNDERSTORMS OVER PARTS OF THE CENTRAL/SOUTHERN HIGH PLAINS.
A SECOND FRONT WILL BE LINGERING OVER FLORIDA THROUGH THURSDAY.
TROPICAL MOISTURE WILL POOL OVER FLORIDA AND THE CENTRAL GULF
COAST, WHICH WILL AID IN THE DEVELOPMENT OF SHOWERS AND
THUNDERSTORMS OVER FLORIDA AND ALONG THE CENTRAL GULF COAST
THROUGH THURSDAY. WAVES OF LOW PRESSURE WILL MOVE ALONG THE FRONT
OVER THE ATLANTIC, STREAMING MOISTURE WESTWARD INTO PARTS OF THE
EASTERN SEABOARD, PRODUCING LIGHT RAIN ALONG THE COAST AS FAR
NORTH AS NEW ENGLAND BY WEDNESDAY. IN ADDITION, THE FLOW OF
MOISTURE OFF THE WESTERN GULF WILL TRIGGER SHOWERS AND
THUNDERSTORMS OVER THE SOUTHERN TIP OF TEXAS THROUGH WEDNESDAY
EVENING.
A DEVELOPING UPPER-LEVEL LOW OVER THE NORTHWEST WILL SLOWLY MOVE
INTO NORTHERN CALIFORNIA, WHICH WILL IMPACT MOST OF THE WEST. THE
UPPER LOW WILL PRODUCE RAIN OVER PARTS OF THE PACIFIC NORTHWEST
AND NORTHERN CALIFORNIA THAT WILL EXPAND INTO PARTS OF THE
NORTHERN INTERMOUNTAIN REGION AND THE NORTHERN/CENTRAL ROCKIES
OVERNIGHT TUESDAY. THE RAIN, ACCOMPANIED BY EMBEDDED
THUNDERSTORMS, WILL CONTINUE OVER PARTS OF THE WEST THROUGH
THURSDAY.
LASTLY, AN AREA OF COLD HIGH PRESSURE OVER THE NORTHEAST HAS
PROMPTED FROST ADVISORIES ACROSS PARTS OF THE NORTHEAST FROM EARLY
MORNING TO LATE MORNING HOURS. FURTHERMORE, SMOKE FROM WILDFIRES
HAS PROMPTED AIR QUALITY ALERTS OVER PARTS OF THE NORTHWEST.
ZIEGENFELDER
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