181
FXUS01 KWBC 270800
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
359 AM EDT MON OCT 27 2025
VALID 12Z MON OCT 27 2025 - 12Z WED OCT 29 2025
...UNSETTLED WEATHER AND COOL TEMPERATURES WILL CONTINUE TO SPREAD
THROUGH THE SOUTHEAST AND SOUTHERN APPALACHIANS MONDAY WITH SOME
ISOLATED FLASH FLOODING POSSIBLE...
...A NEW STORM SYSTEM WILL ORGANIZE ACROSS THE MIDDLE AND LOWER
MISSISSIPPI VALLEY BY MIDWEEK WITH WIDESPREAD SHOWERS AND
THUNDERSTORMS EXPECTED...
...ANOTHER PACIFIC SYSTEM WILL BRING SOME LOWER ELEVATION/COASTAL
RAIN AND HIGHER ELEVATION SNOW TO THE PACIFIC NORTHWEST TUESDAY...
...WELL ABOVE AVERAGE, HOT TEMPERATURES IN THE 90S CONTINUE FOR
SOUTH TEXAS; A WARM UP INTO THE 80S AND 90S HAS PROMPTED HEAT
ADVISORIES FOR SOUTHERN CALIFORNIA TUESDAY...
ONGOING SHOWERS AND THUNDERSTORMS CONTINUE THIS MORNING WITH AN
EASTERLY MOVING UPPER-LOW AND ASSOCIATED FRONTAL SYSTEM OVER THE
SOUTHEAST. THE UPPER-LOW IS ALSO HELPING TO SUPPORT THE
DEVELOPMENT OF A COASTAL LOW AS IT APPROACHES THE ATLANTIC, WHICH
WILL BRING A RENEWED INFLUX OF MOISTURE TO THE ATLANTIC COAST AS
WELL AS INLAND THROUGH THE SOUTHERN APPALACHIANS. THE ONGOING
STORMS PLUS ADDITIONAL DAYTIME DEVELOPMENT WILL BRING LOCALLY
HEAVY RAINFALL, ESPECIALLY ALONG THE IMMEDIATE
FLORIDA/GEORGIA/CAROLINA COASTS AND INLAND INTO THE TERRAIN OF THE
APPALACHIANS WHERE SOME ISOLATED FLASH FLOODING WILL BE POSSIBLE.
LOW PRESSURE WILL MEANDER OFF THE COAST INTO TUESDAY, DRIFTING
NORTHWARD A BIT, WITH SOME CONTINUED SHOWER AND THUNDERSTORM
CHANCES AND MODERATE RAINFALL LINGERING IN THE CAROLINAS AND
SPREADING INTO THE SOUTHERN MID-ATLANTIC.
ANOTHER UPPER-TROUGH PASSING ALONG THE NORTHERN TIER OF THE
WESTERN TO CENTRAL U.S. AND AN ACCOMPANYING COLD FRONT WILL BRING
SCATTERED SHOWERS AND SOME THUNDERSTORMS TO PORTIONS OF THE
NORTHERN PLAINS/UPPER MIDWEST MONDAY, WITH SOME MORE ISOLATED
STORMS POSSIBLE INTO THE MISSOURI VALLEY AND CENTRAL PLAINS.
LINGERING SNOW SHOWERS ALSO CONTINUE AT HIGHER ELEVATIONS OF THE
NORTHERN ROCKIES UNDER THE INFLUENCE OF THE UPPER-TROUGH. THEN, ON
TUESDAY, THE TROUGH WILL BEGIN TO DIG DEEPLY SOUTHWARD HELPING TO
ORGANIZE ANOTHER LOW PRESSURE/FRONTAL SYSTEM OVER THE MIDDLE TO
LOWER MISSISSIPPI VALLEY. WIDESPREAD SHOWERS AND THUNDERSTORMS
WITH SOME LOCALLY HEAVY RAINFALL ARE EXPECTED, ESPECIALLY ACROSS
THE MID-SOUTH WHERE SOME ISOLATED FLASH FLOODING WILL BE POSSIBLE.
STORMS ARE ALSO EXPECTED TO CONTINUE ALONG A LINGERING FRONTAL
BOUNDARY STRETCHING NORTHWARD THROUGH THE MISSOURI VALLEY INTO THE
UPPER MIDWEST.
PRECIPIATION CHANCES WILL LINGER INTO MONDAY FOR PORTIONS OF THE
PACIFIC NORTHWEST INCLUDING SNOW SHOWERS FOR THE CASCADES
FOLLOWING THE DEPARTURE OF THIS WEEKEND'S STORM SYSTEM TO THE
EAST. ANOTHER PACIFIC SYSTEM WILL APPROACH THE REGION TUESDAY
BRINGING A RENEWED ROUND OF LOWER ELEVATION/COASTAL RAIN AND
HIGHER ELEVATION SNOW. HOWEVER, AMOUNTS WILL REMAIN MUCH MORE
MODERATE COMPARED TO THIS PASS WEEKEND'S SYSTEM, AND SHOULD TAPER
OFF RATHER QUICKLY INTO WEDNESDAY. ELSEWHERE, SOME SPOTTY SHOWERS
WILL BE POSSIBLE IN NEW ENGLAND MONDAY.
TEMPERATURES ALONG THE SOUTHERN TIER OF THE COUNTRY WILL GENERALLY
BE ABOVE AVERAGE THE NEXT COUPLE OF DAYS, WITH HIGHS MOSTLY INTO
THE 80S. A COUPLE REGIONS WILL SEE RATHER HOT CONDITIONS FOR LATE
OCTOBER, INCLUDING ACROSS SOUTH TEXAS WHERE HIGHS INTO THE 90S TO
NEAR 100 CONTINUE TO BE AROUND DAILY RECORD TYING/BREAKING LEVELS.
A WARM UP WILL ALSO COME TO SOUTHERN CALIFORNIA TUESDAY WITH A
HEAT ADVISORY NOW IN EFFECT FOR HIGHS IN THE 80S AND 90S. JUST TO
THE NORTH, MUCH COOLER TEMPERATURES ARE EXPECTED WITH THE NOTED
SYSTEM PASSAGES. WELL BELOW AVERAGE CONDITIONS WILL OVERSPREAD
MOST OF THE SOUTHEAST MONDAY-TUESDAY AS THE UPPER-LOW/COLD FRONT
PASS THROUGH THE REGION, WITH HIGHS GENERALLY IN THE 50S AND 60S.
A COLD FRONT WILL ALSO BRING WELL BELOW AVERAGE, COOLER
TEMPERATURES IN THE 50S AND 60S TO MUCH OF THE PLAINS ON TUESDAY
AFTER HIGHS REACH INTO THE 60S AND 70S MONDAY. CONDITIONS WILL
REMAIN WELL BELOW AVERAGE MONDAY ACROSS THE PACIFIC NORTHWEST AND
NORTHERN GREAT BASIN/ROCKIES WITH HIGHS MAINLY IN THE 40S AND 50S,
WITH SOME MODERATION EXPECTED TUESDAY. TEMPERATURES WILL BE AROUND
TYPICAL FALL AVERAGES ACROSS THE NORTHEAST AND INTO THE GREAT
LAKES/MIDWEST, WITH HIGHS MAINLY IN THE 50S.
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