293
FXUS01 KWBC 241959
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
358 PM EDT FRI JUL 24 2026
VALID 00Z SAT JUL 25 2026 - 00Z MON JUL 27 2026
...RISK OF FLASH FLOODING EXPECTED FROM THE CENTRAL PLAINS TO THE
CAROLINAS NEAR A STALLED FRONTAL BOUNDARY...
...MONSOONAL THUNDERSTORMS CONTINUE OVER THE SOUTHWEST AND INTO
PORTIONS OF THE INTERMOUNTAIN WEST AND ROCKIES...
...HAZARDOUS HEAT CONTINUES OVER PARTS OF THE SOUTHERN TIER;
BUILDS OVER THE GREAT BASIN AND NORTHERN PLAINS FRIDAY...
RAINFALL AND GUSTY WINDS ASSOCIATED WITH REMNANTS OF BERTHA HAVE
DIMINISHED OVER TEXAS HOWEVER TROPICAL MOISTURE CONVERGING OVER
THE STALLED FRONTAL BOUNDARY WILL CONTINUE TO FUEL SHOWERS AND
THUNDERSTORMS FOR THE EASTERN CAROLINAS INTO THE WEEKEND. THIS
WILL LEAD TO BAD WEATHER CONDITIONS FOR BEACH AND BOATING
INTERESTS THROUGH THE REMAINDER OF THE WEEK, AND AN INCREASED
THREAT OF FLASH FLOODING FROM THUNDERSTORMS THAT REPEATEDLY
DEVELOP OVER THE SAME AREAS.
A LARGE UPPER RIDGE ANCHORED OVER THE INTERMOUNTAIN WEST WILL
EXPAND TOWARD THE GULF STATES RESULTING IN A LARGE PORTION OF THE
COUNTRY TO HAVE HOT CONDITIONS. THE HOTTEST PLACES ARE EXPECTED TO
BE THE LOWER ELEVATIONS OF THE DESERT SOUTHWEST THROUGH SATURDAY
WITH HIGHS IN THE 110S, AND THIS WILL ALSO BE ACCOMPANIED WITH
SOME HUMIDITY TO PRODUCE HEAT INDICES NEAR OR SLIGHTLY ABOVE THE
ACTUAL TEMPERATURES ACROSS SOUTHERN CALIFORNIA AND INTO SOUTHERN
ARIZONA. HEAT ALSO BUILDS ACROSS THE WESTERN HIGH PLAINS FROM
CENTRAL MONTANA TO THE DAKOTAS THROUGH SATURDAY WITH WIDESPREAD
MAJOR HEAT RISK, AND EXTREME HEAT WARNINGS ARE ALREADY IN EFFECT
FOR MUCH OF CENTRAL AND EASTERN MONTANA. HEAT AND OPPRESSIVE
HUMIDITY WILL REMAIN PERSISTENT FROM THE SOUTHERN PLAINS TO
FLORIDA AS THIS REGION WILL REMAIN SOUTH OF THE STALLED FRONTAL
BOUNDARY, WITH HIGHS WELL INTO THE 90S AND DEWPOINTS WELL INTO THE
70S.
COOLER THAN AND/OR NEAR AVERAGE TEMPERATURES ARE FORECAST FOR MUCH
OF THE GREAT LAKES, NORTHEAST AND NORTHERN MID-ATLANTIC REGIONS IN
THE WAKE OF THE RELATIVELY STRONG COLD FRONT PASSAGE. MONSOONAL
MOISTURE IN PLACE ACROSS THE INTERMOUNTAIN WEST AND THE ROCKIES
WILL FUEL THE DEVELOPMENT OF DAILY AFTERNOON AND EVENING
CONVECTION, SOME OF WHICH COULD BE LOCALLY HEAVY AND RESULT IN
FLOODING ACROSS VULNERABLE LOCATIONS. A SLIGHT RISK OF SEVERE
THUNDERSTORMS PER THE STORM PREDICTION CENTER IS VALID FOR FRIDAY
ACROSS PORTIONS OF NORTH DAKOTA AND INTO NORTHERN MINNESOTA AHEAD
OF A SHORTWAVE TROUGH.
CAMPBELL/HAMRICK
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