645
FXUS01 KWBC 301931
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
330 PM EDT SAT SEP 30 2023
VALID 00Z SUN OCT 01 2023 - 00Z TUE OCT 03 2023
...WIDESPREAD PRECIPITATION, WINDY CONDITIONS, AND BELOW-NORMAL
TEMPERATURES EXPECTED ACROSS MUCH OF THE WESTERN U.S....
...LOCALLY HEAVY RAIN WITH FLOODING POSSIBLE OVER PORTIONS OF THE
SOUTHERN HIGH PLAINS AND ROCKIES...
...ABOVE-NORMAL TO NEAR-RECORD TEMPERATURES FORECAST TO BUILD
FARTHER NORTH OVER THE NORTH-CENTRAL U.S....
A DEEP UPPER LEVEL TROUGH AND ITS ASSOCIATED FRONTAL SYSTEM WILL
ADVANCE ACROSS THE WESTERN U.S., BRINGING WIDESPREAD
PRECIPITATION, WINDY CONDITIONS, AND BELOW-NORMAL TEMPERATURES TO
THE REGION. WIDESPREAD PRECIPITATION WILL CONTINUE TO DEVELOP
ACROSS PORTIONS OF CALIFORNIA, THE GREAT BASIN, AND THE NORTHERN
TO CENTRAL ROCKIES THROUGH THE REMAINDER OF THE WEEKEND INTO
MONDAY. SOME MIXED PRECIPITATION AND SNOW IS EXPECTED ACROSS SOME
OF THE HIGHER ELEVATIONS, INCLUDING PORTIONS OF THE SIERRA AND THE
GLACIER NATIONAL PARK AREA, WHERE WINTER WEATHER ADVISORIES ARE
CURRENTLY IN AFFECT. TEMPERATURES ACROSS MUCH OF THE WESTERN U.S.
ARE FORECAST TO REMAIN SEASONAL TO BELOW-AVERAGE THROUGH THE EARLY
PART OF NEXT WEEK, WITH SOME RECORD COOL TEMPERATURES EXPECTED FOR
PARTS OF SOUTHERN CALIFORNIA AND THE GREAT BASIN ON SUNDAY.
FARTHER EAST, WINDY BUT MOSTLY DRY CONDITIONS ARE EXPECTED TO
CONTINUE ACROSS EASTERN ARIZONA AND WESTERN NEW MEXICO, WHICH ARE
LIKELY TO ONCE AGAIN ELEVATE FIRE WEATHER CONCERNS ACROSS THAT
REGION ON SUNDAY.
MUCH WETTER CONDITIONS ARE EXPECTED FARTHER EAST OVER THE SOUTHERN
HIGH PLAINS AND ALONG THE EASTERN SLOPES OF THE SOUTHERN ROCKIES,
WHERE MOIST SOUTHERLY WINDS ARE EXPECTED TO SUPPORT PERIODS OF
SHOWERS AND THUNDERSTORMS EACH DAY. THESE STORMS WILL HAVE THE
POTENTIAL TO PRODUCE LOCALLY HEAVY AMOUNTS, RESULTING IN ISOLATED
EXCESSIVE RUNOFF AND FLOODING. THE AREAS IMPACTED ARE LIKELY TO
INCLUDE FAR WEST TEXAS, AND PORTIONS OF CENTRAL AND NORTHEAST NEW
MEXICO, WHERE FLOOD WATCHES ARE CURRENTLY IN EFFECT.
AN UPPER LEVEL RIDGE WILL CONTINUE TO SUPPORT ABOVE-NORMAL
TEMPERATURES ACROSS MUCH OF THE CENTRAL U.S. THROUGH THE EARLY
PART OF NEXT WEEK. ANOMALOUSLY WARM TEMPERATURES, CLIMBING MORE
THAN 20 DEGREES ABOVE NORMAL IN SOME LOCATIONS, ARE EXPECTED TO
BUILD FARTHER NORTH FROM THE CENTRAL PLAINS AND MID MISSISSIPPI
VALLEY INTO THE NORTHERN PLAINS AND UPPER MIDWEST ON SUNDAY, WITH
NEAR RECORD HIGHS FORECAST FOR AREAS EXTENDING FROM EASTERN
NEBRASKA AND SOUTHEAST SOUTH DAKOTA TO WISCONSIN.
HIGH PRESSURE AND DRY CONDITIONS, WITH SEASONAL TO ABOVE-AVERAGE
TEMPERATURES, ARE EXPECTED ACROSS MUCH OF THE EASTERN U.S. THROUGH
THE EARLY PART OF NEXT WEEK. FLORIDA WILL LIKELY BE AN EXCEPTION,
WHERE A SLOW-MOVING FRONTAL BOUNDARY IS EXPECTED TO SUPPORT
UNSETTLED WEATHER, WITH AREAS OF HEAVY RAIN POSSIBLE.
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