844
FXUS01 KWBC 300746
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
345 AM EDT THU APR 30 2026
VALID 12Z THU APR 30 2026 - 12Z SAT MAY 02 2026
...THUNDERSTORMS CONTINUE ACROSS TEXAS, THE SOUTHERN PLAINS, AND
LOWER MISSISSIPPI VALLEY WITH A LINGERING FLASH FLOODING
THREAT....
...HEAVY SNOW EXPECTED IN THE CENTRAL ROCKIES TO END THE WORK
WEEK...
...A FRONTAL SYSTEM WILL BRING SHOWERS AND THUNDERSTORMS THROUGH
THE MID-MISSISSIPPI AND OHIO VALLEYS THURSDAY AND FRIDAY...
WIDESPREAD PERSISTENT RAINFALL WILL CONTINUE IN TEXAS AND PARTS OF
THE SOUTHERN PLAINS AS A COLD FRONT MOVES AND STALLS OVER THE GULF
COAST TODAY. A PROLONGED INFLUX OF MOISTURE FROM THE GULF WILL
CONVERGE WITH THE STALLING FRONT AND SUPPORT SEVERAL HOURS OF
CONTINUOUS RAINFALL. GIVEN THE DURATION OF THE EVENT, THE
POTENTIAL FOR HEAVY RATES, AND ANTECEDENT RAINFALL FROM PREVIOUS
DAYS, A SLIGHT RISK OF EXCESSIVE RAINFALL IS IN THE OUTLOOK FOR
CENTRAL TEXAS TODAY, AND TEXAS AND PARTS OF THE LOWER MISSISSIPPI
ON FRIDAY. PARTS OF EAST-CENTRAL TEXAS AND LOUISIANA COULD SEE
RAINFALL RATES EXCEED 1.5 INCHES/HOUR ON FRIDAY. FURTHER NORTH,
THE NORTHERN EXTENT OF THE COLD FRONT WILL PROVIDE PARTS OF THE
NORTHEAST WITH SHOWERS TODAY THROUGH FRIDAY. AS A RESULT OF THE
PASSING FRONT, MUCH OF THE EASTERN TWO-THIRDS OF THE COUNTRY WILL
EXPERIENCE BELOW-AVERAGE TEMPERATURES.
IN THE CENTRAL ROCKIES, AN UPPER-LEVEL WAVE AND ASSOCIATED SURFACE
LOW WILL BRING MIXED PRECIPITATION AND SNOW THROUGH THE END OF THE
WEEK. THE HEAVIEST SNOW IS EXPECTED TO REMAIN CONFINED TO THE
MOUNTAINOUS REGIONS, ALTHOUGH LOWER ELEVATIONS MAY STILL
EXPERIENCE A WINTRY MIX. ACCUMULATIONS COULD POTENTIALLY EXCEED A
FOOT IN ISOLATED HIGH-ELEVATION AREAS. FALLING SNOW WILL LEAD TO
SLIPPERY MOUNTAIN ROADS AND POOR TRAVEL CONDITIONS, WITH
VISIBILITY SIGNIFICANTLY DECREASED AT TIMES. AS SUCH, WINTER
WEATHER ADVISORIES AND WINTER STORM WARNINGS ARE IN EFFECT FOR
PARTS OF THE CENTRAL ROCKIES, ESPECIALLY COLORADO, THROUGH FRIDAY.
A MID-LEVEL SHORTWAVE/FRONTAL SYSTEM WILL CONTINUE TO MOVE THROUGH
THE MID-MISSISSIPPI VALLEY INTO THE OHIO VALLEY AND MID-ATLANTIC
TO END THE WEEK. THIS COMPARATIVELY WEAKER SYSTEM WILL GENERATE
SHOWERS AND THUNDERSTORMS THROUGH THE MID-MISSISSIPPI AND OHIO
VALLEYS BEFORE WEAKENING FURTHER AS IT APPROACHES THE
AFOREMENTIONED GULF COAST LOW. AT THIS POINT, SHOWERS AND
THUNDERSTORMS ARE FORECAST FROM THE SOUTHEAST/LOWER MISSISSIPPI
VALLEY TO PARTS OF THE MID-ATLANTIC. THE MOST INTENSE RAINFALL IS
AGAIN EXPECTED TO OCCUR IN THE SOUTHEAST/LOWER MISSISSIPPI VALLEY.
THUNDERSTORMS WILL THEN PROGRESS EASTWARD, MOVING AWAY FROM THE
TEXAS/LOWER MISSISSIPPI REGION AND INTO THE SOUTHEAST. BY THE
WEEKEND, FOCUS SHIFTS TO THE SOUTHEAST AND MID-ATLANTIC AS A
COASTAL LOW BEGINS TO DEVELOP, POTENTIALLY LINGERING RAIN ACROSS
FLORIDA AND THE SOUTH. IN CONTRAST TO THE COOLER EAST, MUCH OF THE
WESTERN U.S. WILL SEE A NOTABLE WARM-UP, WITH TEMPERATURES
CLIMBING TO ABOVE-AVERAGE LEVELS FOR THE INTERIOR WEST AND DESERT
SOUTHWEST INTO THE WEEKEND.
BLANCO-ALCALA
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