083
FXUS01 KWBC 311857
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
257 PM EDT THU JUL 31 2025
VALID 00Z FRI AUG 01 2025 - 00Z SUN AUG 03 2025
...THERE IS A MODERATE RISK OF EXCESSIVE RAINFALL FOR PORTIONS OF
THE NORTHERN MID-ATLANTIC INTO THURSDAY EVENING...
..HEATWAVE WINDS DOWN ACROSS MUCH OF THE SOUTHEAST
EXTREME HEAT
CONTINUES FOR SOUTHERN ARIZONA...
...FIRE WEATHER CONCERNS FOR PORTIONS OF THE GREAT BASIN INTO
SATURDAY...
A COLD FRONT WITH SUFFICIENT INSTABILITY AND ANOMALOUS MOISTURE
HAS BEGUN PRODUCING HEAVY TO EXCESSIVE RAINFALL AND SEVERE
THUNDERSTORMS ACROSS THE WASHINGTON D.C.-PHILADELPHIA-NEW YORK
CITY URBAN CORRIDOR THURSDAY AFTERNOON, WHICH ARE EXPECTED TO
CONTINUE INTO THURSDAY EVENING; A MODERATE RISK OF EXCESSIVE
RAINFALL EXISTS FOR THIS AREA. TRAINING STORMS COULD LEAD TO
NUMEROUS INSTANCES OF FLASH FLOODING, ESPECIALLY OVER URBANIZED
AREAS. THE STORM PREDICTION CENTER HAS A SLIGHT RISK OF SEVERE
THUNDERSTORMS AS WELL. DAMAGING WIND GUSTS ARE POSSIBLE FOR THESE
AREAS INTO THIS EVENING. ANOTHER SLIGHT RISK OF SEVERE
THUNDERSTORMS EXISTS FOR THE HIGH PLAINS OF WYOMING AND COLORADO
WHERE DAMAGING WIND AND HAIL PRODUCING STORMS WILL BE THE MAIN
THREATS THIS EVENING. THE THREAT FOR FLASH FLOODING SHIFTS
SOUTHWARD INTO THE CAROLINAS ON FRIDAY WHERE A SLIGHT RISK OF
EXCESSIVE RAINFALL EXISTS. THE GULF COAST SHOULD REMAIN WET
THROUGH THIS WEEKEND IN THE VICINITY OF THIS STALLING FRONT. TO
THE SOUTH OF THE FRONT, FLORIDA REMAINS HOT.
THE PASSAGE OF THE COLD FRONT WILL PROVIDE MUCH MILDER
TEMPERATURES FOR PARTS OF THE CENTRAL AND EASTERN U.S. THROUGH
THIS WEEKEND. HIGHS IN THE 70S AND 80S ARE 15-20 DEGREES BELOW
AVERAGE FOR EARLY AUGUST, MORE REPRESENTATIVE OF SEPTEMBER. A DRY
CONTINENTAL AIRMASS SETTLES IN OVER THE MIDWEST AND POINTS EAST
SUPPORTED BY A NEAR RECORD STRONG AREA OF SURFACE HIGH PRESSURE
FOR AUGUST ON FRIDAY AND SATURDAY CENTERED OVER WISCONSIN AND
MICHIGAN. SMOKE FROM SOUTHERN CANADA WITHIN THE POST-FRONTAL AIR
MASS AND SMOKE FROM FIRES ACROSS PORTIONS OF ARIZONA AND UTAH
OVERSPREADS THE CENTRAL ROCKIES, HIGH PLAINS, AND CENTRAL AND
NORTHERN PLAINS FRIDAY AND SATURDAY.
IN THE WEST, RED FLAG WARNINGS ARE IN EFFECT FOR PORTIONS OF
WASHINGTON, OREGON, IDAHO, UTAH, AND COLORADO INTO THURSDAY
EVENING, WITH FIRE WEATHER CONCERNS LINGERING ACROSS PORTIONS OF
THE GREAT BASIN FRIDAY AND SATURDAY DUE TO THUNDERSTORMS WITH
LIMITED RAINFALL IN SOME AREAS AND DRY AND BREEZY CONDITIONS
ELSEWHERE. THE DESERT SOUTHWEST REMAINS HOT UNDER INCREASED
RIDGING ALOFT -- EXTREME HEAT WARNINGS ARE IN EFFECT FOR FRIDAY
AND SATURDAY ACROSS SOUTHERN ARIZONA.
ROTH
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