764
FXUS01 KWBC 290801
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
400 AM EDT WED APR 29 2026
VALID 12Z WED APR 29 2026 - 12Z FRI MAY 01 2026
...ISOLATED SEVERE WEATHER AND HEAVY RAINFALL POSSIBLE TODAY OVER
PORTIONS OF THE GULF COAST STATES AND MID ATLANTIC...
...ANOTHER THREAT FOR FLASH FLOODING WILL RETURN TO PORTIONS OF
CENTRAL AND EASTERN TEXAS TOMORROW...
...A COLD FRONT WILL BRING COOLER, BELOW AVERAGE TEMPERATURES TO
MOST OF THE CENTRAL/EASTERN U.S. WHILE THE WESTERN U.S. TRENDS
WARMER THE NEXT FEW DAYS...
OVER THE NEXT 24-36 HOURS, A DEVELOPING UPPER-LOW OVER THE GREAT
LAKES IS FORECAST TO DRIVE A COLD FRONT AND WEAK WAVES OF LOW
PRESSURE ACROSS THE EASTERN SEABOARD AND GULF COAST STATES, WHILE
AN ACTIVE SUBTROPICAL JET STREAMS INTO THE SOUTHERN U.S. THIS
PATTERN WILL SUPPORT A SWATH OF SHOWERS AND THUNDERSTORMS FROM THE
OHIO VALLEY AND MID-ATLANTIC TO SOUTH-CENTRAL TEXAS TODAY AHEAD OF
THE COLD FRONT. FORTUNATELY, THE THREAT OF FLASH FLOODING AND
SEVERE WEATHER WITH THIS ACTIVITY TODAY WILL BE LOWER COMPARED TO
EARLIER THIS WEEK -- HIGHLIGHTED BY THE MARGINAL RISK IN TODAY'S
EXCESSIVE RAINFALL AND CONVECTIVE OUTLOOKS. HOWEVER, AN ISOLATED
FLASH FLOOD AND SEVERE THUNDERSTORM IS POSSIBLE WITH STORMS THAT
DEVELOP LATER THIS MORNING AND AFTERNOON. THE FRONT WILL CLEAR
MOST OF THE EAST COAST BY THURSDAY WITH SOME LINGERING STORMS IN
NEW ENGLAND, BUT SLOWER MOVEMENT WITH SOUTHWESTWARD EXTENT WILL
LEAD TO CONTINUED THUNDERSTORM CHANCES WEST ALONG THE GULF COAST
AND INTO TEXAS/NEW MEXICO. AN INCOMING SOUTHERN STREAM DISTURBANCE
WILL HELP PROMOTE MORE WIDESPREAD DEVELOPMENT TOMORROW ACROSS
PORTIONS OF TEXAS WEST INTO NEW MEXICO WITH HEAVY DOWNPOURS AND
FLASH FLOODING POSSIBLE. A SLIGHT RISK OF EXCESSIVE RAINFALL
COVERS PORTIONS OF CENTRAL AND EASTERN TEXAS WHERE THE GREATEST
THREAT FOR SCATTERED INSTANCES OF FLASH FLOODING IS CURRENTLY
EXPECTED. AS WE ENTER MAY, THE STAGNATING FRONT WILL SUPPORT
ANOTHER ROUND OF THUNDERSTORMS ALONG THE GULF COAST WHICH WILL
MAINTAIN THE THREAT OF FLASH FLOODING OVER MUCH OF THE SAME AREA.
ELSEWHERE, ENERGETIC UPPER-FLOW OVER THE NORTHERN/CENTRAL ROCKIES
AND ADJACENT HIGH PLAINS WILL BRING SOME SCATTERED SHOWERS OVER
THE NEXT COUPLE OF DAYS, WITH SNOW POSSIBLE FOR HIGHER MOUNTAIN
ELEVATIONS. THE APPROACH OF THE MORE SUBSTANTIAL UPPER-WAVE OVER
THE SOUTHWEST TO SOUTH-CENTRAL U.S. WILL ENCOURAGE MORE
WIDESPREAD, HEAVIER PRECIPITATION ACROSS THE CENTRAL
ROCKIES/ADJACENT HIGH PLAINS THURSDAY. HEAVY SNOW IS FORECAST FOR
THE MOUNTAINS WITH THE POTENTIAL THAT SOME SNOW MAY MIX IN FOR THE
FOOTHILLS/PALMER DIVIDE. THE PASSING COLD FRONT WILL BRING
INCREASINGLY MORE WIDESPREAD COOLER, BELOW AVERAGE TEMPERATURES TO
THE CENTRAL/EASTERN U.S. OVER THE NEXT FEW DAYS. HIGHS INTO 80S
WILL BE LIMITED TO THE SOUTHEAST AND TEXAS TODAY, WITH MOST
LOCATIONS FALLING INTO THE 60S TO MID-70S BY THURSDAY OUTSIDE OF
THE GULF COAST. FORECAST HIGHS IN THE 40S AND 50S WILL BE COMMON
ACROSS THE NORTHERN TIER AND SOUTH INTO THE CENTRAL HIGH PLAINS.
MEANWHILE, MUCH OF THE WESTERN U.S. WILL SEE HIGHS TREND UPWARD
FROM AROUND AVERAGE TO ABOVE AVERAGE THROUGH MID-WEEK. HIGHS
GENERALLY IN THE 50S AND 60S TODAY ALONG THE WEST COAST AND INTO
THE INTERIOR WEST WILL RISE INTO THE 70S FOR MANY BY THURSDAY.
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