628
FXUS01 KWBC 301906
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
305 PM EDT MON SEP 30 2024
VALID 00Z TUE OCT 01 2024 - 00Z THU OCT 03 2024
...RECORD HEAT CONTINUES ACROSS MUCH OF CALIFORNIA INTO THE DESERT
SOUTHWEST...
...ELEVATED TO CRITICAL FIRE WEATHER CONDITIONS PERSIST ACROSS THE
NORTHERN TO CENTRAL PLAINS...
...ONE MORE DAY OF WET WEATHER ACROSS THE CENTRAL APPALACHIANS
INTO THE MID ATLANTIC BEFORE A DRIER PATTERN SETS IN BY MID WEEK...
A MID TO UPPER LEVEL RIDGE IS FORECAST TO CONTINUE TO STRETCH FROM
OFF THE CALIFORNIA COAST, EAST SOUTHEASTWARD ACROSS CALIFORNIA,
THE GREAT BASIN AND THE DESERT SOUTHWEST OVER THE NEXT FEW DAYS.
THIS WILL KEEP THE EARLY FALL HEAT WAVE GOING FOR MUCH OF
CALIFORNIA INTO THE DESERT SOUTHWEST THROUGH THE REMAINDER OF THIS
WEEK, WITH WIDESPREAD MODERATE TO MAJOR HEAT RISK IMPACTS ALONG
WITH POTENTIAL FOR WIDESPREAD RECORD HIGH TEMPERATURES. EXCESSIVE
HEAT WARNINGS ARE CURRENTLY IN EFFECT ACROSS WESTERN ARIZONA, FAR
SOUTHERN NEVADA AND SOUTHEAST CALIFORNIA, WHILE HEAT ADVISORIES
CURRENTLY STRETCH ALONG MUCH OF COASTAL CALIFORNIA AND INTO THE
INTERIOR VALLEYS. THESE WARNINGS AND ADVISORIES ARE CURRENTLY
AFFECTING OVER 30 MILLION PEOPLE. HIGH TEMPERATURES ACROSS THESE
REGIONS ARE EXPECTED TO BE 10 TO 20 DEGREES ABOVE AVERAGE OVER THE
NEXT FEW DAYS.
ACROSS THE NORTHERN TIER OF THE LOWER 48 FROM THE NORTHERN PLAINS
INTO THE UPPER MISSISSIPPI VALLEY, THE WEEKEND RECORD WARM
TEMPERATURES HAVE BEEN REPLACED BY COOLER WEATHER IN THE WAKE OF A
STRONG COLD FRONT THAT HAS MOVED OUT OF THE NORTHERN PLAINS INTO
THE UPPER TO MID MISSISSIPPI VALLEY AND SOUTHWARD INTO THE CENTRAL
TO SOUTHERN PLAINS. THIS FRONT HAS NOT PRODUCED ANY PRECIPITATION
ACROSS THE NORTHERN TO CENTRAL PLAINS INTO THE UPPER MISSISSIPPI
VALLEY WHERE DROUGHT CONDITIONS PERSIST. THESE DRY CONDITIONS,
COMBINED LOW RELATIVE HUMIDITIES AND GUSTY WINDS IN THE WAKE OF
THIS FRONT WILL CONTINUE TO SUPPORT A WILD FIRE THREAT. RED FLAG
WARNINGS ARE CURRENTLY IN EFFECT ACROSS MUCH OF THE NORTHERN TO
CENTRAL PLAINS INTO THE UPPER MISSISSIPPI VALLEY, AFFECTING
APPROXIMATELY 3 MILLIONS PEOPLE.
IN CONTRAST TO THE DRY CONDITIONS ACROSS THE WESTERN TO CENTRAL
U.S., WET WEATHER IS EXPECTED TO CONTINUE ACROSS PORTIONS OF THE
CENTRAL APPALACHIANS INTO THE MID ATLANTIC WHERE A MID TO UPPER
LEVEL LOW CONTINUES TO MOVE SLOWLY EASTWARD. ADDITIONAL MODERATE
TO LOCALLY HEAVY RAINFALL AMOUNTS POSSIBLE ACROSS THIS AREA INTO
TUESDAY. THIS RECENT WET PATTERN WILL BE COMING TO AN END BY
WEDNESDAY, AS THIS SLOW MOVING SYSTEM FINALLY MOVES OFF THE
MID-ATLANTIC COAST, SIGNALING THE BEGINNING OF A DRY PATTERN THAT
WILL LIKELY LAST INTO THE WEEKEND.
ORAVEC
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