614
FXUS01 KWBC 231834
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
233 PM EDT TUE JUL 23 2024
VALID 00Z WED JUL 24 2024 - 00Z FRI JUL 26 2024
...MAJOR TO LOCALLY EXTREME HEAT RISK WILL EXPAND ACROSS THE
NORTHERN HIGH PLAINS AS HEAT GRADUALLY BECOMES LESS INTENSE OVER
THE CENTRAL VALLEY OF CALIFORNIA AND THE GREAT BASIN...
...SCATTERED SHOWERS AND THUNDERSTORMS WILL AFFECT A LARGE SECTION
OF THE EASTERN HALF OF THE U.S. WITH HEAVY RAIN EMERGING ALONG THE
TEXAS COAST TONIGHT...
...MONSOONAL THUNDERSTORMS CONTINUE ACROSS THE GREAT BASIN AND
INTO THE FOUR CORNERS REGION WITH THREATS OF LOCALIZED FLASH
FLOODING...
A SLOW-TO-EVOLVE SUMMERTIME WEATHER PATTERN WILL CONTINUE ACROSS
MUCH OF THE U.S. MAINLAND AS A MORE PROGRESSIVE PACIFIC COLD FRONT
SWEEPS ACROSS THE NORTHWESTERN PART OF THE COUNTRY THROUGH THE
NEXT COUPLE OF DAYS. UNDER THIS WEATHER PATTERN, UNSETTLED
WEATHER AND RELATIVELY COOL TEMPERATURES FOR JULY WILL CONTINUE
ACROSS THE EASTERN HALF OF THE COUNTRY AS THE ONGOING HEAT WAVE
OVER THE WESTERN U.S. WILL GRADUALLY BECOME LESS INTENSE WITH THE
ARRIVAL OF THE PACIFIC COLD FRONT. THE STRONGER FORCING
ASSOCIATED WITH THIS FRONT WILL PUSH THE HEAT DOME EAST OF THE
GREAT BASIN, RESULTING IN THE EXPANSION OF MAJOR TO LOCALLY
EXTREME HEAT RISK ACROSS THE NORTHERN HIGH PLAINS THROUGH THE NEXT
COUPLE OF DAYS. HIGH TEMPERATURES ARE FORECAST TO REACH WELL UP
INTO THE 100S OVER THE NORTHERN HIGH PLAINS THROUGH THURSDAY WITH
LITTLE TO NO RAINFALL EXPECTED. MEANWHILE, THE HEAT WILL
GRADUALLY BECOME LESS INTENSE OVER THE CENTRAL VALLEY OF
CALIFORNIA AND THE GREAT BASIN WITH TIME. PLEASE CONTINUE TO
PRACTICE HEAT SAFETY IN THE WESTERN U.S. AND AS THE HEAT SPREADS
INTO THE NORTHERN HIGH PLAINS.
IN CONTRAST, COOLER THAN NORMAL TEMPERATURES WILL PREVAIL ACROSS
THE MID-SECTION OF THE COUNTRY AND INTO PORTIONS OF THE EASTERN
U.S. WHERE A STALLED FRONT WILL KEEP PLENTY OF CLOUDS ALONG WITH
SCATTERED THUNDERSTORMS. THESE THUNDERSTORMS ARE NOT EXPECTED TO
BE SEVERE BUT THEY COULD RESULT IN LOCALIZED FLOODING ISSUES FROM
TIME TO TIME ACROSS THE SOUTHERN TIER STATES AND UP AND DOWN THE
EAST COAST. A SLIGHT RISK OF FLASH FLOODING IS ANTICIPATED FROM
SOUTHEAST TEXAS INTO PORTIONS OF THE LOWER MISSISSIPPI VALLEY
WHILE ANOTHER IS IN EFFECT FROM THE CAROLINAS INTO INTERIOR
PORTIONS OF THE SOUTHEAST THROUGH THURSDAY. TONIGHT, A COASTAL
FRONT COULD SET OFF HEAVY RAIN AND THUNDERSTORMS NEAR THE TEXAS
COAST INTO SOUTHWESTERN LOUISIANA WHERE FLASH FLOODING IS
POSSIBLE. FARTHER NORTH, ANOTHER COLD FRONT FROM EASTERN CANADA
DIPPING INTO THE NORTHERN TIER STATES WILL BRING ADDITIONAL
THUNDERSTORMS ACROSS THE GREAT LAKES TO NEW ENGLAND THROUGH
WEDNESDAY. BY THURSDAY MORNING, THE GREAT LAKES SHOULD CLEAR OUT
FROM THE RAIN BUT NORTHERN NEW ENGLAND WILL SEE AN INCREASING
CHANCE OF SHOWERS AND THUNDERSTORMS AS A LOW PRESSURE WAVE
APPROACHES FROM THE WEST. MEANWHILE, MONSOONAL THUNDERSTORMS WILL
CONTINUE ACROSS THE GREAT BASIN AND THE FOUR CORNERS REGION WITH
THE THREAT OF LOCALIZED FLASH FLOODING OVER THE NEXT COUPLE OF
DAYS.
KEBEDE/KONG
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