349
FXUS01 KWBC 211813
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
213 PM EDT SUN JUN 21 2026
VALID 00Z MON JUN 22 2026 - 00Z WED JUN 24 2026
...FIRST FEW DAYS OF SUMMER TO BRING MUCH ABOVE AVERAGE
TEMPERATURES ACROSS THE WEST COAST, GREAT BASIN, SOUTHWEST,
ROCKIES AND ALONG THE GULF COAST AND SOUTHEAST...
...HEAVY RAINS/SEVERE WEATHER SUNDAY NIGHT/EARLY MONDAY FROM THE
LOWER LAKES INTO THE OHIO VALLEY, INTO THE MID-ATLANTIC AND
NORTHEAST LATER ON MONDAY...
...COOLER THAN AVERAGE TEMPERATURES ON TAP FOR THE
NORTHERN/CENTRAL PLAINS, GREAT LAKES AND INTO THE NORTHEAST...
...HEAVY RAINS AND SEVERE WEATHER POSSIBLE FOR THE NORTHERN AND
CENTRAL PLAINS LATE MONDAY INTO TUESDAY...
THE FIRST FULL DAYS OF SUMMER 2026 WILL BRING MUCH ABOVE AVERAGE
TEMPERATURES TO ALL OF THE WESTERN U.S. FROM THE WEST COAST,
THROUGH THE GREAT BASIN, SOUTHWEST AND ROCKIES, EXTENDING EASTWARD
ACROSS TEXAS, THE GULF COAST, SOUTHEAST AND FLORIDA. THE HOTTEST
TEMPERATURES OVER 100 DEGREES EXPECTED FROM WEST AND SOUTHWEST
TEXAS, INTO THE SOUTHWEST AND INTERIOR CALIFORNIA VALLEYS, WHILE
LOW TO MID 90S EXPECTED ELSEWHERE ACROSS THE ABOVE MENTIONED
REGIONS. HEAT ADVISORIES ARE CURRENTLY IN EFFECT ACROSS THE
PACIFIC NORTHWEST AND SOUTHERN PLAINS, AFFECTING OVER 19 MILLION
PEOPLE. IN CONTRAST, COOLER THAN AVERAGE TEMPERATURES ARE
EXPECTED TO STRETCH ACROSS THE NORTHERN AND CENTRAL PLAINS, GREAT
LAKES AND INTO THE NORTHEAST OVER THE NEXT FEW DAYS.
THE VERY ACTIVE WEATHER SUNDAY AFTERNOON OVER THE UPPER
MISSISSIPPI VALLEY/MID-WEST REGION WILL BE PUSHING EASTWARD ACROSS
THE LOWER LAKES AND OHIO VALLEY SUNDAY NIGHT/EARLY MONDAY AND INTO
THE MID-ATLANTIC AND NORTHEAST LATER MONDAY. AN AREA OF LOW
PRESSURE AND ACCOMPANYING AREA OF MUCH ABOVE AVERAGE MOISTURE
VALUES WILL SUPPORT HEAVY RAINS AND THE RISK OF FLASH FLOODING
WITH THIS SYSTEM WITH THE GREATEST RISKS OF FLASH FLOODING TODAY
INTO SUNDAY NIGHT FROM THE LOWER MISSOURI VALLEY TO LOWER OHIO
VALLEY AND THEN ACROSS THE URBAN CORRIDOR FROM WASHINGTON D.C. TO
NEW YORK CITY MONDAY AFTERNOON AND MONDAY EVENING. FLOOD WATCHES
ARE CURRENTLY IN EFFECT FROM THE LOWER MISSOURI VALLEY REGION INTO
THE LOWER OHIO VALLEY REGION, AFFECTING NEARLY 12 MILLION PEOPLE.
THE TRAILING COLD FRONT FROM THIS AREA OF LOW PRESSURE WILL ALSO
PRODUCE THE POTENTIAL FOR ACTIVE THUNDERSTORMS, HEAVY RAINS AND
SEVERE WEATHER FROM THE LOWER TENNESSEE VALLEY, LOWER MISSISSIPPI
VALLEY AND INTO PORTIONS OF THE SOUTHERN PLAINS SUNDAY NIGHT INTO
MONDAY. ADDITIONAL HEAVY RAINS AND THE POTENTIAL FOR SEVERE
WEATHER POSSIBLE LATE MONDAY INTO TUESDAY ACROSS THE NORTHERN AND
CENTRAL PLAINS IN ASSOCIATION WITH THE NEXT STRONG SYSTEM, IN THE
CURRENT VERY ACTIVE PATTERN ACROSS THE MID SECTION OF THE NATION,
TO MOVE INTO THE NORTHERN TO CENTRAL PLAINS.
ORAVEC
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