348
FXUS01 KWBC 281959
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
359 PM EDT WED MAY 28 2025
VALID 00Z THU MAY 29 2025 - 00Z SAT MAY 31 2025
...WET WEATHER AND BELOW AVERAGE TEMPERATURES EXPECTED THE NEXT
FEW DAYS FROM THE CENTRAL TO SOUTHERN PLAINS, EAST THROUGH THE
LOWER MISSISSIPPI VALLEY, OHIO VALLEY, SOUTHERN TO CENTRAL
APPALACHIANS, SOUTHEAST AND MID-ATLANTIC...
...MUCH ABOVE AVERAGE TEMPERATURES TO BUILD LATE WEEK INTO THIS
WEEKEND FROM CALIFORNIA INTO THE GREAT BASIN AS AN EARLY SEASON
HEATWAVE DEVELOPS...
A WET WEATHER PATTERN WILL CONTINUE OVER THE NEXT FEW DAYS ACROSS
A LARGE PORTION OF THE LOWER 48 FROM THE CENTRAL TO SOUTHERN
PLAINS, EAST INTO THE LOWER MISSISSIPPI VALLEY, OHIO VALLEY,
SOUTHERN TO CENTRAL APPALACHIANS, SOUTHEAST AND MID-ATLANTIC.
RAINS CURRENTLY FALLING FROM THE LOWER LAKES INTO THE MID-ATLANTIC
WEDNESDAY AFTERNOON WILL SHIFT NORTHEASTWARD INTO THE NORTHERN
MID-ATLANTIC, NEW YORK STATE AND NEW ENGLAND WEDNESDAY NIGHT INTO
THURSDAY. AT THE SAME TIME, THE NEXT ROUND OF HEAVY RAINS WILL
CONTINUE TO EXPAND EASTWARD ACROSS THE CENTRAL AND SOUTHERN PLAINS
TONIGHT AND INTO THE LOWER MISSOURI VALLEY, OHIO VALLEY AND LOWER
MISSISSIPPI VALLEY THURSDAY INTO FRIDAY, AND ACROSS THE CENTRAL TO
SOUTHERN APPALACHIANS AND INTO THE MID-ATLANTIC BY FRIDAY
AFTERNOON/EVENING. THUNDERSTORMS ARE POSSIBLE WITH THIS BROAD
AREA OF POTENTIALLY HEAVY RAINS WITH SEVERE WEATHER ALSO POSSIBLE
FROM THE CENTRAL TO SOUTHERN PLAINS, EAST INTO THE LOWER
MISSISSIPPI VALLEY AND SOUTHEAST OVER THE NEXT TWO DAYS. ACROSS
THESE REGION, LARGE HAIL AND HIGH WINDS HAVE THE GREATEST
PROBABILITY OF OCCURRING, WITH TORNADOES A LESSER PROBABILITY.
FOR MOST OF THESE AREAS, THIS IS A CONTINUATION OF A WET PATTERN
THAT HAS BEEN IN PLACE FOR MUCH OF THE MONTH WITH MUCH ABOVE
AVERAGE OBSERVED PRECIPITATION HAVING OCCURRED, ESPECIALLY FROM
THE CENTRAL TO SOUTHERN PLAINS INTO THE LOWER MISSISSIPPI VALLEY.
THIS NEXT ROUND OF POTENTIALLY HEAVY RAINS IS IN RESPONSE TO A
BROAD MID TO UPPER LEVEL CLOSED LOW CENTERED OVER THE UPPER
MISSISSIPPI VALLEY, WITH ITS EFFECTS STRETCHING FAR TO THE SOUTH
AND EAST OF THE CIRCULATION CENTER. IN ADDITION TO THE POTENTIAL
FOR ADDITIONAL HEAVY RAINS ACROSS THESE REGIONS, HIGH TEMPERATURES
WILL REMAIN BELOW AVERAGE FOR THE END OF THE WORK WEEK AND INTO
THE WEEKEND FOR THESE AREAS. THERE ARE SIGNS, HOWEVER, OF A
PATTERN CHANGE BY THE END OF THE WEEKEND INTO NEXT WEEK, WITH
DRIER CONDITIONS FROM THE CENTRAL TO EASTERN U.S., AND
INCREASINGLY WET CONDITIONS ACROSS THE ROCKIES INTO THE NORTHERN
PLAINS.
WHILE WET AND COOL CONDITIONS STRETCH ACROSS LARGE PORTIONS OF THE
CENTRAL AND EASTERN U.S. OVER THE NEXT FEW DAYS, THE OPPOSITE WILL
BE TRUE FOR MUCH OF THE WEST. MUCH ABOVE AVERAGE TEMPERATURES
EXPECTED TO BUILD FROM CALIFORNIA INTO THE GREAT BASIN THURSDAY,
FRIDAY AND SATURDAY, BEFORE COOLER TEMPERATURES BEGIN TO MOVE IN
LATER IN THE WEEKEND INTO NEXT WEEK IN RESPONSE TO THE ABOVE
MENTIONED PATTERN CHANGE ON TAP FOR THE WEST. A FEW RECORD OR
NEAR RECORD HIGH TEMPERATURES POSSIBLE FRIDAY ACROSS CALIFORNIA
INTO SOUTHERN NEVADA, WITH A MORE WIDESPREAD RECORD HIGH POTENTIAL
ON SATURDAY FROM CALIFORNIA INTO NEVADA, EASTERN OREGON, CENTRAL
TO SOUTHERN IDAHO, WESTERN MONTANA AND NORTHERN UTAH. THIS EARLY
SEASON HEATWAVE WILL BE PRODUCING MODERATE TO MAJOR HEAT RELATED
IMPACTS ACROSS THESE REGIONS. HEAT ADVISORIES ARE CURRENTLY IN
EFFECT ACROSS MUCH OF CENTRAL TO NORTHERN CALIFORNIA, WHILE
EXTREME HEAT WATCHES ARE IN EFFECT FOR SOUTHERN NEVADA INTO
SOUTHEAST CALIFORNIA, WITH THESE ADVISORIES AND WATCHES AFFECTING
NEARLY 15 MILLION PEOPLE.
ORAVEC
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