209
FXUS01 KWBC 221946
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
345 PM EDT MON JUN 22 2026
VALID 00Z TUE JUN 23 2026 - 00Z THU JUN 25 2026
...SEVERE THUNDERSTORMS AND FLASH FLOODING THREAT CONTINUE ACROSS
PORTIONS THE CENTRAL AND EASTERN U.S....
..DANGEROUS HEAT PERSISTS IN THE WEST
AN ACTIVE SUMMERTIME WEATHER PATTERN WILL PERSIST ACROSS PARTS OF
THE CENTRAL AND EASTERN UNITED STATES THROUGH MIDWEEK. A SERIES OF
ATMOSPHERIC DISTURBANCES INTERACTING WITH ABUNDANT SEASONAL
MOISTURE WILL TRIGGER WIDESPREAD SHOWERS AND STRONG TO SEVERE
THUNDERSTORMS FROM THE HIGH PLAINS TO THE MID-ATLANTIC. THESE
STORMS MAY PRODUCE DAMAGING WIND GUSTS, LARGE HAIL, AND LOCALIZED
FLASH FLOODING. MEANWHILE, A STRONG RIDGE OF HIGH PRESSURE WILL
SUSTAIN INTENSE HEAT ACROSS THE WEST, SOUTHWEST, AND SOUTHERN
PLAINS. IN CONTRAST, A COOLER-THAN-AVERAGE CANADIAN AIR MASS WILL
SPREAD FROM THE NORTHERN AND CENTRAL PLAINS INTO THE NORTHEAST,
BRINGING BELOW-NORMAL TEMPERATURES TO MUCH OF THE REGION.
THROUGH THE REMAINDER OF THE EVENING AND OVERNIGHT, AN ADVANCING
COLD FRONT WILL PROVIDE A FOCUS FOR SEVERE WEATHER ACROSS THE
MID-ATLANTIC AND SOUTHEAST, WHILE THUNDERSTORMS DEVELOPING EAST OF
THE ROCKIES WILL THREATEN THE CENTRAL HIGH PLAINS WITH VERY LARGE
HAIL AND A FEW TORNADOES. BY TUESDAY AFTERNOON, A TYPICAL
SUMMERTIME THUNDERSTORM COMPLEX IS EXPECTED TO ORGANIZE OVER THE
CENTRAL HIGH PLAINS BEFORE TRACKING SOUTHEASTWARD INTO PORTIONS OF
THE CENTRAL AND SOUTHERN PLAINS. DAMAGING WIND GUSTS IN EXCESS OF
75 MPH AND LARGE HAIL WILL BE POSSIBLE WITH THIS ACTIVITY. IN
ADDITION TO THE SEVERE WEATHER THREAT, TORRENTIAL RAINFALL MAY
ACCOMPANY SOME STORMS, MAINTAINING A RISK OF FLASH FLOODING,
PARTICULARLY IN AREAS WHERE SOILS ARE ALREADY SATURATED.
TEMPERATURE TRENDS THROUGH MIDWEEK WILL HIGHLIGHT A STARK CONTRAST
ACROSS THE COUNTRY. OPPRESSIVE HEAT WILL CONTINUE ACROSS MUCH OF
THE WEST AND SOUTHERN PLAINS, WITH DAYTIME HIGHS RUNNING 10 TO 20
DEGREES ABOVE NORMAL IN MANY LOCATIONS. MEANWHILE, A MUCH COOLER
CONTINENTAL AIR MASS BEHIND THE EASTERN COLD FRONT WILL PROVIDE A
REPRIEVE FROM TYPICAL SUMMERTIME HEAT, KEEPING TEMPERATURES BELOW
SEASONAL AVERAGES ACROSS THE NORTHERN AND CENTRAL PLAINS, GREAT
LAKES, NORTHEAST, AND NORTHERN MID-ATLANTIC THROUGH WEDNESDAY.
PEREIRA
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