706
FXUS01 KWBC 301907
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
307 PM EDT FRI AUG 30 2024
VALID 00Z SAT AUG 31 2024 - 00Z MON SEP 02 2024
...HEAVY RAIN AND SEVERE WEATHER CHANCES WILL SPREAD FROM THE
PLAINS TO EAST COAST TO START THE HOLIDAY WEEKEND...
...MULTIPLE DAYS OF HEAVY RAIN MAY CAUSE FLASH FLOODING FOR
PORTIONS OF THE LOUISIANA AND TEXAS GULF COASTS...
...WELL ABOVE NORMAL TEMPERATURES FORECAST IN THE NORTHWESTERN
U.S. THIS WEEKEND...
TWO FRONTAL SYSTEMS ARE FORECAST TO MOVE SOUTH ACROSS THE CENTRAL
AND EASTERN U.S. OVER THE HOLIDAY WEEKEND, BRINGING WIDESPREAD
SHOWERS AND THUNDERSTORMS FROM THE CENTRAL AND SOUTHERN PLAINS
THROUGH THE MISSISSIPPI VALLEY TO THE EAST COAST. SEVERE
THUNDERSTORMS WILL BE POSSIBLE IN THE WARM SECTOR AHEAD OF THE
LEADING COLD FRONT WHERE THERE WILL BE AMPLE MOISTURE AND
INSTABILITY. THE STORM PREDICTION CENTER HAS ISSUED A SLIGHT RISK
OF SEVERE THUNDERSTORMS (LEVEL 2/5) FOR EASTERN MICHIGAN TODAY AND
FOR PORTIONS OF THE NORTHEAST, MID-ATLANTIC, AND CENTRAL
APPALACHIANS SATURDAY. DAMAGING WIND GUSTS WILL BE THE MAIN SEVERE
THUNDERSTORM THREAT. ADDITIONALLY, SHOWERS AND STORMS WILL BE
CAPABLE OF PRODUCING LOCALLY HEAVY RAINFALL THAT COULD LEAD TO
ISOLATED INSTANCES OF FLASH FLOODING FROM THE SOUTHERN PLAINS TO
THE NORTHEAST. THE LEADING FRONT IS FORECAST TO STALL ACROSS THE
SOUTH AND SOUTHEAST LATER THIS WEEKEND, PRODUCING WIDESPREAD
SHOWERS AND STORMS THROUGH LABOR DAY. THE SECOND COLD FRONTAL
PASSAGE WILL BE MOSTLY DRY WITH THE EXCEPTION OF SOME LIGHT
SHOWERS NEAR THE GREAT LAKES AND NORTHEAST SATURDAY AND SUNDAY,
RESPECTIVELY. THE SECOND FRONT IS FORECAST TO SLOW DOWN AS IT
APPROACHES THE STALLED FRONT ACROSS THE SOUTHERN TIER.
ALONG THE GULF COAST, AN AREA OF LOW PRESSURE WILL LINGER JUST
OFFSHORE OF TEXAS AND LOUISIANA. THIS SYSTEM WILL CONTINUE TO
BRING A CONCENTRATED AREA OF HEAVY RAIN AND THUNDERSTORMS TO
PORTIONS OF THE LOUISIANA AND UPPER TEXAS GULF COASTS THROUGH THE
WEEKEND. HIGH RAIN RATES AND REPEATING ROUNDS OF STORMS MAY LEAD
TO SCATTERED INSTANCES OF FLASH FLOODING, ESPECIALLY IN URBAN AND
FLOOD PRONE AREAS. THIS AREA HAS BEEN HIGHLIGHTED WITH A SLIGHT
RISK OF EXCESSIVE RAINFALL (LEVEL 2/4) FOR TODAY AND SATURDAY.
DAILY THUNDERSTORM CHANCES WILL ALSO EXIST OVER PORTIONS OF THE
FLORIDA PENINSULA.
TEMPERATURES ACROSS MUCH OF THE EAST WILL GENERALLY BE COOLING
DOWN AS PRECIPITATION CHANCES INCREASE AHEAD OF THE APPROACHING
FRONTAL SYSTEMS, WHICH WILL BRING AN END TO THE PERIOD OF RECORD
SETTING HEAT THAT IMPACTED THE REGION THIS WEEK. THE CENTRAL U.S.
WILL SEE TEMPERATURES FALL BELOW NORMAL THIS WEEKEND IN THE WAKE
OF THE COLD FRONTS. HIGHS IN THE SOUTHERN PLAINS WILL STAY IN THE
80S AND LOWER 90S. HIGHS IN THE NORTHERN/CENTRAL PLAINS WILL DROP
FROM THE 80S TO NEAR 90 DEGREES ON SATURDAY TO THE 70S ON SUNDAY.
IN THE WEST, TEMPERATURES WILL BE HEATING UP IN THE NORTHWEST AS
AN UPPER LEVEL RIDGE BUILDS OVERHEAD. HIGH TEMPERATURES ARE
FORECAST TO BE 10-20 DEGREES ABOVE NORMAL, REACHING THE
MID-TO-UPPER 90S TO NEAR 100 DEGREES IN SOME AREAS. HEAT
ADVISORIES HAVE BEEN ISSUED FOR MUCH OF EASTERN WASHINGTON AND
OREGON AND NORTHERN IDAHO. THOSE WITH OUTDOOR PLANS FOR LABOR DAY
WEEKEND SHOULD BE SURE TO TAKE FREQUENT BREAKS FROM THE HEAT IN
THE SHADE AND STAY HYDRATED. ELSEWHERE IN THE WEST, TEMPERATURES
WILL GENERALLY BE NEAR OR JUST ABOVE AVERAGE.
DOLAN
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