908
FXUS01 KWBC 121959
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
357 PM EDT FRI SEP 12 2025
VALID 00Z SAT SEP 13 2025 - 00Z MON SEP 15 2025
...THUNDERSTORMS CONTINUE OVER THE SOUTHERN ROCKIES, HIGH PLAINS,
AND SOUTH FLORIDA; SCATTERED FLASH FLOODING AND SEVERE WEATHER
POSSIBLE...
...RELATIVELY COOL TEMPERATURES ANTICIPATED THIS WEEKEND WEST OF
THE CONTINENTAL DIVIDE; WARM WEATHER FORECAST DOWNWIND ACROSS THE
CENTRAL AND EASTERN U.S...
PORTIONS OF THE SOUTHERN ROCKIES, HIGH PLAINS, AND SOUTH FLORIDA
CONTINUE TO BE A FOCUS FOR SHOWERS AND THUNDERSTORMS ON THE
FLANK(S) OF AN UPPER-RIDGE SANDWICHED OVER THE HEARTLAND. TO THE
WEST, SCATTERED FLASH FLOODING, HAIL, AND SEVERE WIND REMAIN
POSSIBLE TODAY NEAR THE FOUR CORNERS AREA AND NORTHERN HIGH PLAINS
AS THUNDERSTORMS EXPAND IN COVERAGE DOWNSTREAM OF AN AMPLIFIED
UPPER-TROUGH. EVENTUALLY, THE APPROACH OF THE UPPER-TROUGH AND AN
EMERGING COLD FRONT SHOULD SHIFT THE HEAVY RAIN AND SEVERE WEATHER
THREAT EASTWARD INTO THE HIGH PLAINS (BOTH NORTHERN AND SOUTHERN)
TOMORROW, WITH A SIMILAR COVERAGE OF IMPACTS EXPECTED. MEANWHILE,
IN THE EAST, ISOLATED TO SCATTERED URBAN FLASH FLOOD POTENTIAL
WILL PERSIST ACROSS SOUTH FLORIDA THROUGH SUNDAY WITH STORMS
EXPECTED NEAR A STUBBORN FRONT WHICH HAS NOW MEANDERED SOUTH OF
THE FLORIDA PENINSULA.
WITH THE ADVANCE OF THE AFOREMENTIONED UPPER-TROUGH AND COLD
FRONT, RELATIVELY COOL TEMPERATURES ARE FORECAST ACROSS THE
INTERMOUNTAIN WEST THIS WEEKEND WITH DAYTIME HIGHS 10-15 DEGREES
BELOW NORMAL (GENERALLY IN THE 70'S-80'S). IN STARK CONTRAST TO
THE WEST, SOME OF THE CENTRAL U.S. WILL SEE WARM, ABOVE-AVERAGE
TEMPERATURES ECLIPSING THE MID-UPPER 90'S THIS WEEKEND. THE LATEST
EXPERIMENTAL HEATRISK GUIDANCE SUGGESTS THAT THIS HOT WEATHER
COULD POSSIBLY IMPACT ANYONE WITHOUT ACCESS TO COOLING OR
HYDRATION ON SATURDAY AND SUNDAY. LOOKING BEYOND THE WEEKEND, WARM
TEMPERATURES WILL PERSIST ACROSS THE CENTRAL U.S., ALTHOUGH AS OF
NOW HEAT IMPACTS BEYOND WILL GENERALLY REMAIN CONFINED TO THOSE
SENSITIVE TO HEAT.
ASHERMAN
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