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FXUS01 KWBC 130759
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
358 AM EDT SAT SEP 13 2025
VALID 12Z SAT SEP 13 2025 - 12Z MON SEP 15 2025
...ROUNDS OF 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; WARMER THAN NORMAL WEATHER FROM THE
CENTRAL U.S. TO THE NORTHEAST...
PORTIONS OF THE SOUTHERN ROCKIES, HIGH PLAINS, AND SOUTH FLORIDA
CONTINUE TO BE A FOCUS FOR SHOWERS AND THUNDERSTORMS ON EITHER
SIDE OF AN UPPER-LEVEL OMEGA-BLOCKING PATTERN OVER THE MID-SECTION
OF THE COUNTRY. FARTHER WEST, SCATTERED FLASH FLOODING, HAIL, AND
SEVERE WIND REMAIN POSSIBLE TODAY FROM THE FOUR CORNERS TO THE
NORTHERN HIGH PLAINS AS THUNDERSTORMS EXPAND IN COVERAGE
DOWNSTREAM OF AN AMPLIFIED UPPER-TROUGH. BY SUNDAY, THE APPROACH
OF THE UPPER-TROUGH AND A DEVELOPING COLD FRONT SHOULD SHIFT THE
HEAVY RAIN AND SEVERE WEATHER THREAT EASTWARD INTO THE NORTHERN
AND SOUTHERN HIGH PLAINS, 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 FRONT THAT HAS STALLED TO THE
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, MUCH OF THE MIDWEST WILL SEE WARM, ABOVE-AVERAGE
TEMPERATURES REACHING INTO THE MID-UPPER 90'S DURING THE AFTERNOON
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
LIMITED TO THOSE SENSITIVE TO HEAT.
OVER THE PACIFIC NORTHWEST, THE NEXT ROUND OF RAIN, POSSIBLY WITH
SOME EMEDDED THUNDERSTORMS, IS FORECAST TO ARRIVE ON SUNDAY. THE
ASSOCIATED COLD FRONT AND UPPER TROUGH WILL PUSH FARTHER INLAND
SUNDAY NIGHT, BRINGING THE RAIN ACROSS NORTHERN IDAHO INTO WESTERN
MONTANA BY MONDAY MORNING.
KONG/ASHERMAN
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