028
FXUS01 KWBC 241945
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
342 PM EDT MON AUG 24 2026
VALID 00Z TUE AUG 25 2026 - 00Z THU AUG 27 2026
...DANGEROUS RECORD-BREAKING HEAT CONTINUES ACROSS THE
SOUTH-CENTRAL U.S. INTO THE SOUTHWEST THIS WEEK...
...FLASH FLOODING AND SEVERE WEATHER THREATS CONTINUE ACROSS
PORTIONS OF THE SOUTHWEST AND INTO THE ROCKIES/PLAINS, UPPER
MIDWEST, AND SOUTHEAST THROUGH WEDNESDAY...
A STRONG RIDGE ANCHORED OVER THE SOUTHWEST AND SOUTH-CENTRAL U.S.
WILL CONTINUE TO BRING HAZARDOUS HEAT ACROSS THE SOUTHERN PLAINS
AND LOWER MISSISSIPPI VALLEY BEFORE GRADUALLY EXPANDING INTO THE
SOUTHWEST BY MID-WEEK. DAYTIME HIGHS WILL REACH 100-110 DEGREES
ACROSS THE SOUTHERN PLAINS, WHILE PORTIONS OF THE SOUTHWEST CAN
REACH UP TO 115. SOME AREAS ARE EVEN EXPECTED TO BREAK DOZENS OF
DAILY TEMPERATURE RECORDS THROUGH THE WEEK. ADDITIONALLY, VERY
WARM OVERNIGHT TEMPERATURES WILL PROVIDE LIMITED NIGHTTIME RELIEF,
LEADING TO WIDESPREAD MAJOR TO EXTREME HEATRISK FOR THE NEXT
SEVERAL DAYS. SEE THE LATEST KEY MESSAGES LINKED AT THE BOTTOM OF
THE DISCUSSION FOR MORE INFORMATION.
THE WESTERN PERIPHERY OF THE RIDGE WILL REMAIN A CORRIDOR FOR
MONSOONAL MOISTURE EXTENDING NORTHWARD ACROSS THE FOUR CORNERS AND
INTERMOUNTAIN WEST/ROCKIES. THE MOISTURE COMBINED WITH STRONG
SURFACE HEATING WILL LEAD TO SCATTERED THUNDERSTORMS ACROSS
PORTIONS OF THE SOUTHWEST, GREAT BASIN, AND CENTRAL ROCKIES. THE
STRONGEST STORMS WILL BE CAPABLE OF PRODUCING SEVERE WEATHER AND
HEAVY RAINFALL, WITH GUSTY WINDS AND LOCALIZED FLASH FLOODING
POSSIBLE THROUGH WEDNESDAY. FARTHER NORTH, A PROGRESSIVE WESTERLY
FLOW WILL PERSIST ACROSS THE NORTHERN ROCKIES/PLAINS AND UPPER
MIDWEST. AS THE FRONTAL BOUNDARY MOVES EASTWARD, IT WILL INTERACT
WITH WARM AND UNSTABLE AIR, SUPPORTING EPISODES OF ORGANIZED
THUNDERSTORMS ACROSS PARTS OF THE ROCKIES/PLAINS INTO THE UPPER
MIDWEST. LOCALLY HEAVY RAINFALL AND SEVERE WEATHER WILL BE
POSSIBLE WITH STRONGER STORMS THROUGH TUESDAY AND WEDNESDAY,
ESPECIALLY OVER THE CENTRAL/SOUTHERN HIGH PLAINS.
MEANWHILE, A SURFACE LOW AND ASSOCIATED FRONTAL BOUNDARY WILL
CONTINUE TO PULL AWAY FROM THE NORTHEAST, BUT REINFORCING
DISTURBANCES WILL CONTINUE TO PRODUCE SCATTERED SHOWERS AND
THUNDERSTORMS ACROSS PARTS OF NORTHERN NEW ENGLAND INTO TUESDAY.
FARTHER SOUTH, A TRAILING SLOW-MOVING FRONTAL BOUNDARY WILL DRAPE
ACROSS THE SOUTHEAST INTO THE SOUTHERN PLAINS, BRINGING REPEATED
CHANCES FOR SHOWERS AND THUNDERSTORMS THROUGH WEDNESDAY. WARM AND
MOIST GULF AIR INTERACTING WITH THE NEARLY STALLED FRONT WILL
SUPPORT THE POTENTIAL FOR LOCALLY HEAVY RAINFALL AND SEVERE
WEATHER. THE STRONGEST STORMS MAY PRODUCE DAMAGING WINDS AND
ISOLATED FLASH FLOODING, ESPECIALLY ACROSS PORTIONS OF THE LOWER
MISSISSIPPI VALLEY, ALONG THE GULF COAST, AND FOR PARTS OF THE
SOUTHEAST.
MILLER/OUDIT
GRAPHICS AVAILABLE AT
HTTPS://WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP
EXTREME HEAT KEY MESSAGES AVAILABLE AT:
HTTPS://WWW.WPC.NCEP.NOAA.GOV/KEY_MESSAGES/LATESTKEYMESSAGE_1.PNG
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