694
FXUS01 KWBC 180830
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
400 AM EDT MON MAY 18 2026
VALID 12Z MON MAY 18 2026 - 12Z WED MAY 20 2026
...ANOTHER DAY OF ACTIVE SEVERE WEATHER AND FLASH FLOOD THREAT
ACROSS THE EAST-CENTRAL U.S. BEFORE SHIFTING SOUTH INTO THE
SOUTHERN PLAINS LATE TUESDAY...
...EXTREME FIRE WEATHER CONCERNS ACROSS THE SOUTHERN HIGH PLAINS
TODAY...
...HEAVY WET SNOW BLANKETS THE HIGHER ELEVATIONS OF WYOMING, THE
FRONT RANGE, AND THE WASATCH BEFORE TAPERING OFF TONIGHT...
...AN EARLY-SEASON HEATWAVE WILL CHALLENGE TEMPERATURE RECORDS
ACROSS THE EASTERN U.S....
A RATHER DEEP UPPER-LEVEL TROUGH DIGGING INTO THE WESTERN U.S.
WILL CONTINUE TO EJECT ENERGETIC WAVES OUT OF THE ROCKIES AND
INTERACT WITH A STATIONARY FRONT ACROSS THE MIDSECTION OF THE
COUNTRY. MEANWHILE, A BERMUDA HIGH WILL REMAIN ANCHORED ACROSS
THE WESTERN ATLANTIC. THIS WEATHER PATTERN WILL BRING ANOTHER DAY
OF ACTIVE SEVERE WEATHER ACROSS THE EAST-CENTRAL PLAINS AS HEAVY
MOUNTAIN SNOW BLANKETS THE HIGHER ELEVATIONS OF THE NORTHERN
ROCKIES, WHILE HEAT CONTINUES TO BUILD ACROSS THE EASTERN U.S.
THE GREATEST THREAT OF SEVERE WEATHER EXTENDING FROM NORTHERN
KANSAS TO SOUTHERN MINNESOTA EARLY THIS MORNING IS EXPECTED TO
ENTER A RELATIVE LULL DURING THE DAY. BY THIS EVENING, THE MAIN
UPPER TROUGH IS FORECAST TO EJECT OUT OF THE ROCKIES TO TRIGGER A
FINAL ROUND OF SEVERE WEATHER AND HEAVY DOWNPOURS ACROSS THE
CENTRAL PLAINS TO THE UPPER MIDWEST. THE STORM PREDICTION CENTER
HAS ISSUED A MODERATE RISK OF SEVERE THUNDERSTORMS FROM EASTERN
KANSAS TO SOUTHEASTERN NEBRASKA THROUGH TONIGHT. THE WEATHER
PREDICTION CENTER HIGHLIGHTS A SLIGHT RISK OF FLASH FLOODING FROM
EAST-CENTRAL PLAINS TO THE MIDWEST WITH A MODERATE RISK ACROSS
CENTRAL MISSOURI. THE MAIN UPPER TROUGH WILL FINALLY KICK THE
SLUGGISH SYSTEM FARTHER SOUTH AND EAST ON TUESDAY, BRINGING
SHOWERS AND THUNDERSTORMS ACROSS THE GREAT LAKES WITH GUSTY WINDS.
SHOWERS AND THUNDERSTORMS WILL EXTEND INTO THE OHIO VALLEY AND
THE MID-SOUTH TUESDAY INTO WEDNESDAY MORNING. STRONGER
THUNDERSTORMS APPEAR MOST LIKELY ACROSS EASTERN HALF OF TEXAS TO
THE LOWER MISSISSIPPI VALLEY LATER ON TUESDAY INTO WEDNESDAY
MORNING.
MEANWHILE, LATE-SEASON HEAVY SNOW IS IN PROGRESS ACROSS THE HIGHER
ELEVATIONS OF WYOMING, THE FRONT RANGE, AND THE WASATCH AS THE
MAIN UPPER TROUGH MOVES ACROSS THE REGION. STRONG WESTERLY WINDS
DOWN THE SLOPES OF THE SOUTHERN ROCKIES WILL MEET WITH DRY GROUNDS
AND LOW RELATIVE HUMIDITY TO MAINTAIN EXTREME FIRE WEATHER DANGER
FOR THE SOUTHERN HIGH PLAINS TODAY BEFORE A COLD FRONT BRINGS MUCH
COOLER AIR FROM THE NORTH ON TUESDAY. AS THE MAIN UPPER TROUGH
EJECTS INTO THE PLAINS, THE MOUNTAIN SNOW IS FORECAST TO TAPER OFF
THIS EVENING. MEANWHILE, HIGH TEMPERATURES WILL ONCE AGAIN TOP
100 DEGREES AT THE HOTTEST LOCATIONS OVER THE TEXAS PANHANDLE
TODAY BEFORE MUCH COOLER AIR ARRIVES TONIGHT.
AS SNOW AND SEVERE WEATHER IS IN FULL SWING ACROSS THE ROCKIES
INTO THE PLAINS, THE EASTERN U.S. IS ENTERING AN EARLY-SEASON
HEATWAVE. A BERMUDA HIGH WILL REMAIN ANCHORED OVER THE WESTERN
ATLANTIC AS A LONG FETCH OF WARM SOUTHERLY FLOW ACROSS THE EASTERN
HALF OF THE COUNTRY WILL BE WARMED FURTHER BY THE STRONG MAY SUN.
HIGH TEMPERATURES REACHING INTO THE MID-90S WILL CHALLENGE
TEMPERATURE RECORDS ACROSS THE EAST-CENTRAL U.S. INCLUDING THE
MID-ATLANTIC THIS AFTERNOON, SPREADING INTO NEW ENGLAND BY
TUESDAY. HEATRISK IS FORECAST TO REACH MAJOR LEVEL ON TUESDAY FOR
MAJOR CITIES ACROSS THE MID-ATLANTIC TO NEW ENGLAND. MEANWHILE,
FROST AND FREEZE RELATED ADVISORIES/WARNINGS ARE IN PLACE ACROSS
PORTIONS OF THE NORTHERN TO CENTRAL HIGH PLAINS THROUGH TUESDAY
MORNING BEHIND THE LATE-SEASON SNOWFALL WHERE WINTER STORM
WARNINGS AND WINTER WEATHER ADVISORIES ARE IN EFFECT FOR MUCH OF
WYOMING INTO UTAH AND NORTHERN COLORADO.
KONG
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