537
FXUS01 KWBC 281938
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
338 PM EDT SAT JUN 28 2025
VALID 00Z SUN JUN 29 2025 - 00Z TUE JUL 01 2025
...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER PARTS OF
THE UPPER MISSISSIPPI VALLEY AND NORTHERN/CENTRAL PLAINS ON
SATURDAY AND OVER THE UPPER GREAT LAKES AND UPPER/MIDDLE
MISSISSIPPI VALLEY ON SUNDAY...
THE LEADING LOW PRESSURE SYSTEM IS TRACKING FROM THE GREAT
LAKES/NORTHEAST REGION TODAY THROUGH SUNDAY. SHOWERS AND
THUNDERSTORMS ARE DEVELOPING ALONG AND AHEAD OF THIS SYSTEM FROM
THE MID-ATLANTIC TO THE NORTHEAST AS WELL AS THE GREAT LAKES
REGION. SOUTH OF THE FRONT, UPPER-LEVEL IMPULSES, DAYTIME HEATING,
AND AMPLE AMOUNTS OF MOISTURE WILL DEVELOP SHOWERS AND
THUNDERSTORMS OVER THE SOUTHEAST, TENNESSEE VALLEY, AND GULF
COAST. THE STORM PREDICTION CENTER HAS A SLIGHT RISK IN EFFECT FOR
PORTIONS OF THE NORTHERN MID-ATLANTIC AND THE NORTHEAST FOR SEVERE
STORMS AND WPC HAS MUCH OF THE SAME AREA IN A MARGINAL RISK FOR
EXCESSIVE RAINFALL AND LOCAL FLASH FLOODING CONCERNS.
A SECOND LOW PRESSURE SYSTEM WILL BE TRACKING THROUGH THE NORTHERN
PLAINS AND UPPER MISSISSIPPI VALLEY. SCATTERED TO WIDESPREAD
CONVECTION IS EXPECTED AHEAD OF AND ALONG THE APPROACHING FRONTS
THROUGH MONDAY. THE ENVIRONMENT WILL BE CONDUCIVE FOR SEVERE
THUNDERSTORMS TO DEVELOP ACROSS THE NORTHERN/CENTRAL PLAINS AND
PORTIONS OF THE UPPER MISSISSIPPI VALLEY. THE STORM PREDICTION
CENTER HAS A SLIGHT RISK IN EFFECT THROUGH SUNDAY MORNING AND WPC
HAS MUCH OF THE SAME AREA IN A MARGINAL RISK FOR EXCESSIVE
RAINFALL AND LOCAL FLASH FLOODING CONCERNS. THE HAZARDS ASSOCIATED
WITH THESE THUNDERSTORMS ARE FREQUENT LIGHTNING, SEVERE
THUNDERSTORM WIND GUSTS, HAIL, AND A FEW TORNADOES. HOWEVER, THERE
WILL BE AN INCREASED THREAT OF HAIL TWO INCHES OR GREATER OVER
MINNESOTA. ADDITIONALLY, WEAK ONSHORE FLOW AND UPPER-LEVEL ENERGY
WILL PRODUCE SCATTERED SHOWERS OVER PARTS OF THE PACIFIC NORTHWEST.
CAMPBELL
GRAPHICS AVAILABLE AT
HTTPS://WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP
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