079
FXUS01 KWBC 260746
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
346 AM EDT THU JUN 26 2025
VALID 12Z THU JUN 26 2025 - 12Z SAT JUN 28 2025
...PROLONGED AND INTENSE HEAT WAVE CONTINUES INTO FRIDAY FROM
MIDWEST TO MID-ATLANTIC...
...UNSETTLED WEATHER COULD PRODUCE SEVERE WEATHER AND EXCESSIVE
RAINFALL FOR PARTS OF THE CENTRAL AND EASTERN U.S....
EXTREME HEAT WARNINGS AND HEAT ADVISORIES REMAIN IN EFFECT FOR
PORTIONS OF THE MID-ATLANTIC, OHIO VALLEY AND THE SOUTHEAST
THROUGH TODAY--IMPACTING APPROXIMATELY 130 MILLION PEOPLE. THE
OHIO VALLEY IS STILL EXPECTED TO EXPERIENCE THE MOST PROLONGED AND
NOTABLE EFFECTS FROM THIS HEAT WAVE. THE DURATION OF THIS HEAT
REMAINS DANGEROUS TO ANYONE WITHOUT EFFECTIVE COOLING AND/OR
ADEQUATE HYDRATION AS HEAT RELATED ILLNESSES INCREASE
SIGNIFICANTLY DURING EXTREME LONGER DURATION HEAT. CONTINUE TO
LIMIT OUTDOOR TIME, STAY HYDRATED, AND TAKE ACTION WHEN YOU SEE
SYMPTOMS OF HEAT EXHAUSTION AND HEAT STROKE. THE EXTREME HEAT WILL
MODERATE ACROSS THE MID-ATLANTIC TONIGHT FOLLOWED BY FRIDAY FOR
THE OHIO VALLEY, DUE TO THE WEAKENING RIDGE ALOFT.
A QUASI-STATIONARY SURFACE FRONT DRAPED ACROSS THE NORTHERN TIER,
SHORTWAVE ENERGY RIDING ALONG THE BOUNDARY AND WARM UNSTABLE AIR
PRESENT AT THE SURFACE WILL CONTRIBUTE TO SCATTERED TO ORGANIZED
THUNDERSTORM ACTIVITY ACROSS MUCH OF THE EASTERN HALF OF THE
COUNTRY OVER THE NEXT SEVERAL DAYS. THERE'S A SLIGHT RISK (AT
LEAST 15%) OF EXCESSIVE RAINFALL LEADING TO FLASH FLOODING OVER
PARTS OF EASTERN KANSAS UP INTO IOWA, WISCONSIN AND NORTHERN
MICHIGAN/U.P.. THE STORM PREDICTION CENTER ALSO ISSUED A SLIGHT
RISK (LEVEL 2/5) FOR A SMALL AREA ENCOMPASSING NORTHEASTERN IOWA,
FAR SOUTHEASTERN MINNESOTA AND SOUTHWESTERN WISCONSIN, WHERE
ISOLATED WIND DAMAGE WILL BE POSSIBLE. THE THREAT FOR FLASH
FLOODING SHIFTS INTO THE INTERIOR NORTHEAST ON FRIDAY WHERE A
SURFACE WAVE RIDING ALONG A WARM FRONT WILL LIFT UP INTO THE
REGION. A SLIGHT RISK OF EXCESSIVE RAINFALL IS IN PLACE ACROSS
NORTHEASTERN UPSTATE NEW YORK, AND NORTHERN VERMONT/NEW HAMPSHIRE.
A NEW CONVECTIVE THREAT DEVELOPS OVER THE NORTHERN PLAINS ON
FRIDAY OUT AHEAD OF A LONGWAVE TROUGH AND AN EMERGING SURFACE LOW
PRESSURE SYSTEM. SPC ISSUED A SLIGHT RISK FOR PARTS OF THE DAKOTAS
AND FAR NORTH-CENTRAL NEBRASKA, WHERE LARGE HAIL AND LOCALLY
DAMAGING WINDS ARE FORECAST.
A DEGRADING UPPER LOW WILL RETROGRADE INTO THE SOUTHEAST COAST
OVER THE NEXT COUPLE OF DAYS. SCATTERED SHOWERS AND THUNDERSTORMS
ARE EXPECTED FROM THE SOUTHEAST UP INTO THE MID-ATLANTIC, WHERE
SOME STORMS COULD PRODUCE SPORADIC/ISOLATED WIND DAMAGE, ACCORDING
TO SPC. CONTINUED CLOUDY AND RAINY CONDITIONS COULD PRODUCE
LOCALIZED FLASH FLOODING IN NEW MEXICO THROUGH FRIDAY, BUT WILL
ALSO KEEP TEMPERATURES DOWN BETWEEN 10-20 DEGREES BELOW AVERAGE.
KEBEDE
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