561
FXUS01 KWBC 261946
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
346 PM EDT TUE AUG 26 2025
VALID 00Z WED AUG 27 2025 - 00Z FRI AUG 29 2025
...SCATTERED AREAS OF FLASH FLOODING REMAIN POSSIBLE ACROSS
POCKETS OF THE INTERMOUNTAIN WEST THROUGH WEDNESDAY...
...ROUNDS OF HEAVY RAINFALL ARE ANTICIPATED ACROSS PORTIONS OF
COLORADO, NEW MEXICO, KANSAS, OKLAHOMA, INTO THE MID-SOUTH THROUGH
THURSDAY...
...TEMPERATURES ARE EXPECTED TO TREND COOLER, HOWEVER ABOVE-NORMAL
TEMPERATURES WILL PERSIST ACROSS THE NORTHWEST; BELOW-AVERAGE
TEMPERATURES EXPECTED FOR MUCH OF THE REMAINING CONTIGUOUS U.S.....
FUELED BY MONSOONAL MOISTURE, SHOWERS AND THUNDERSTORMS WILL
PERSIST INTO THIS EVENING ACROSS PARTS OF THE SOUTHWEST, GREAT
BASIN, SIERRA NEVADA, AND CENTRAL AND SOUTHERN ROCKIES. FLASH
FLOODING REMAINS A CONCERN, PARTICULARLY IN DRY WASHES, ARROYOS,
URBAN AREAS, BURN SCARS, AND BOX CANYONS.
ON WEDNESDAY, STORMS ARE EXPECTED TO BE MORE ISOLATED IN THE
SOUTHWEST, GREAT BASIN, AND SIERRA NEVADA. HOWEVER, AN UPPER-LEVEL
DISTURBANCE WILL BRING MORE WIDESPREAD ACTIVITY AND A HIGHER RISK
OF HEAVY RAIN AND FLASH FLOODING ACROSS THE NORTHERN INTERMOUNTAIN
WEST AND NORTHERN ROCKIES.
TEMPERATURES WILL STAY ABOVE NORMAL THROUGH MIDWEEK, BUT THE
UPPER-LEVEL SYSTEM AND INCREASED CLOUD COVER WILL HELP ALLEVIATE
THE ONGOING HEATWAVE IN THE NORTHWEST AND NORTHERN INTERMOUNTAIN
WEST.
A SERIES OF DISTURBANCES FROM THE WESTERN U.S. WILL INTERACT WITH
MOISTURE SPREADING THROUGH THE SOUTHERN PLAINS, PRODUCING STORMS
OVER THE CENTRAL ROCKIES AND HIGH PLAINS. THESE STORMS WILL SPREAD
EAST INTO KANSAS AND OKLAHOMA BY WEDNESDAY MORNING, REACHING THE
OZARKS BY THE AFTERNOON AND EVENING. HOWEVER, REDEVELOPING STORMS
ARE LIKELY BACK TO THE WEST, RESULTING IN AN INCREASING CHANCE FOR
HEAVY RAINFALL ACCUMULATIONS AND FLASH FLOODING FROM THE COLORADO
HIGH PLAINS EASTWARD ACROSS KANSAS AND NORTHERN OKLAHOMA INTO THE
OZARKS, WEDNESDAY THOUGH WEDNESDAY NIGHT. THEN ON THURSDAY, THE
GREATER THREAT FOR HEAVY RAIN AND FLASH FLOODING WILL SHIFT A
LITTLE FARTHER SOUTH OVER THE HIGH PLAINS, EXTENDING FROM EASTERN
COLORADO INTO NORTHEASTERN NEW MEXICO. FARTHER TO THE EAST, WHILE
AN ISOLATED CHANCE FOR FLASH FLOODING WILL REMAIN ACROSS THE
CENTRAL AND SOUTHERN PLAINS, A GREATER THREAT WILL FOCUS FARTHER
EAST FROM THE OZARKS INTO PARTS OF THE MID-SOUTH AND THE LOWER
MISSISSIPPI VALLEY.
APART FROM THE NORTHWEST AND THE GULF COAST STATES, DAYTIME
TEMPERATURES ARE EXPECTED TO BE SEASONAL TO BELOW AVERAGE ACROSS
MUCH OF THE CONTIGUOUS U.S. FORECAST TO DIP MORE THAN 15 DEGREES
BELOW AVERAGE IN SOME SPOTS, RECORDS LOWS ARE EXPECTED ACROSS
PARTS OF THE OHIO/TENNESSEE VALLEYS AND THE MID-SOUTH TONIGHT,
WITH ADDITIONAL RECORDS POSSIBLE ACROSS PARTS OF THE OHIO VALLEY,
MID ATLANTIC, AND NORTHEAST WEDNESDAY NIGHT.
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