725  
FXUS01 KWBC 310819  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
400 AM EDT SAT MAY 31 2025  
 
VALID 12Z SAT MAY 31 2025 - 12Z MON JUN 02 2025  
 
...MODERATE TO HEAVY RAIN EXPECTED TO MOVE ACROSS THE INTERIOR NEW  
ENGLAND TODAY WITH GUSTY WINDS...  
 
...SHOWERS AND THUNDERSTORMS EXPECTED TO REACH THE DESERT  
SOUTHWEST SUNDAY NIGHT AND THEN THE FOUR CORNERS MONDAY MORNING...  
 
...A ROUND OF RAIN EXPECTED TO REACH MONTANA SUNDAY NIGHT INTO  
MONDAY MORNING WITH GUSTY WINDS...  
 
...ONE MORE DAY OF SIGNIFICANT HEAT EXPECTED ACROSS INTERIOR  
CALIFORNIA AND PORTIONS OF THE SOUTHWEST FOR TODAY...  
 
A RATHER STRONG LOW PRESSURE SYSTEM FOR LATE MAY WAS TRACKING INTO  
SOUTHERN NEW ENGLAND EARLY THIS SATURDAY MORNING. THIS SYSTEM IS  
FORECAST TO MOVE NORTHEASTWARD THROUGH THE REST OF NEW ENGLAND FOR  
THE REMAINDER OF TODAY WHILE BRINGING A ROUND OF MODERATE TO HEAVY  
RAIN ESPECIALLY ACROSS THE INTERIOR SECTIONS DURING THE DAY TODAY  
ALONG WITH GUSTY WINDS EXPANDING ACROSS THE NORTHEAST. THE COLD  
FRONT TRAILING SOUTH FROM THE SYSTEM CENTER WILL BE PUSHING WELL  
OFF THE EAST COAST TODAY. NEVERTHELESS, INSTABILITY ASSOCIATED  
WITH A COLD UPPER-LEVEL TROUGH BEHIND THE FRONT COULD TRIGGER  
ADDITIONAL SCATTERED THUNDERSTORMS ACROSS THE MID-ATLANTIC REGION  
THIS AFTERNOON, EVEN THOUGH TEMPERATURES WILL BE COOLER IN THE  
WAKE OF THE FRONT. SATURDAY NIGHT INTO SUNDAY MORNING, A  
REINFORCING COLD FRONT WILL BRING COOLER THAN NORMAL TEMPERATURES  
FROM THE GREAT LAKES THROUGH THE NORTHEAST AND DOWN INTO THE  
MID-ATLANTIC, SETTING UP A FAIRLY PLEASANT SUNDAY TO ROUND OUT THE  
WEEKEND. SOME RAIN/SHOWERS ARE EXPECTED TO LINGER OVER NORTHERN  
NEW ENGLAND SUNDAY INTO MONDAY DUE TO THE PROXIMITY OF THE DEEP  
AND LARGE LOW PRESSURE SYSTEM WHICH WILL BE TAKING ITS TIME TO  
EXIT EASTERN CANADA.  
 
MEANWHILE, IN CONTRAST TO THE RAIN AND COOLING TREND IN THE  
EASTERN U.S., A STRONG RIDGE OF HIGH PRESSURE WILL BRING HEAT AND  
DRY WEATHER INITIALLY ACROSS MUCH OF THE WESTERN U.S. AND INTO THE  
NORTHERN PLAINS. IN FACT, HIGH TEMPERATURES REACHING DAILY RECORD  
LEVELS WILL BE EXPANDING INTO THE GREAT BASIN, IDAHO, AND AS FAR  
NORTH AS WESTERN MONTANA TODAY. THE ANTICIPATED HEAT HAS PROMPTED  
ANOTHER DAY OF EXTREME HEAT WARNINGS FOR PORTIONS OF SOUTHERNMOST  
NEVADA, SOUTHEAST CALIFORNIA, AND NORTHWESTERN MOST ARIZONA.  
MEANHWILE, HEAT ADVISORIES REMAIN IN EFFECT FOR MOST OF TODAY  
ACROSS THE INTERIOR VALLEYS OF CALIFORNIA, PORTIONS OF NEVADA INTO  
EASTERN OREGON, PORTIONS OF IDAHO AND NORTHWESTERN MONTANA.  
DRINKING PLENTY OF WATER, WEARING LIGHT COLORED CLOTHING, AND  
STAYING IN AIR CONDITIONED AREAS IS ADVISED AS TEMPERATURES SOAR  
AS HIGH AS THE MID-110S FAHRENHEIT IN LOWER DESERT LOCATIONS LIKE  
DEATH VALLEY, CALIFORNIA. A COLD FRONT FROM THE PACIFIC IS  
FORECAST TO BRING RAPID COOLING INTO THE PACIFIC NORTHWEST LATER  
TODAY INTO SUNDAY BUT WITH MINIMAL RAINFALL EXPECTED. FARTHER  
SOUTH AND EAST, SURGING MOISTURE AHEAD OF THE FRONT ACROSS PARTS  
OF THE ROCKIES AND INTERMOUNTAIN WEST WILL SUPPORT HIGH ELEVATION  
SHOWERS AND THUNDERSTORMS SUNDAY AFTERNOON AND EVENING. GIVEN THE  
ENHANCED MOISTURE BEING DRAWN IN, SOME OF THESE SHOWERS AND STORMS  
COULD PRODUCE BRIEFLY HEAVY DOWNPOURS. ACROSS THE DESERT  
SOUTHWEST, SHOWERS AND THUNDERSTORMS WILL BE ON THE INCREASE  
BEGINNING SUNDAY AS AN UPPER-LEVEL LOW FROM THE PACIFIC REACHES  
INTO NORTHERN MEXICO. SCATTERED THUNDERSTORMS CAN ALSO BE  
EXPECTED TO DEVELOP ACROSS THE CENTRAL ROCKIES SUNDAY NIGHT. BY  
MONDAY MORNING, SHOWERS AND THUNDERSTORMS ASSOCAITED WITH THE  
UPPER LOW WILL LIKELY SPREAD FURTHER NORTHEASTWARD INTO THE FOUR  
CORNERS REGION.  
 
ACROSS THE NORTHERN ROCKIES INTO THE NORTHERN HIGH PLAINS, A LOW  
PRESSURE SYSTEM IS FORECAST TO DEVELOP AS THE PACIFIC COLD FRONT  
PROGRESSES FARTHER INLAND. A SWATH OF MODERATE TO LOCALLY HEAVY  
RAINFALL IS EXPECTED TO DEVELOP OVER MONTANA (ESPECIALLY CENTRAL  
MONTANA) SUNDAY NIGHT INTO MONDAY MORNING AS A SURGE OF COOLER AIR  
ASSOCIATED WITH A CANADIAN HIGH PRESSURE SYSTEM ARRIVES TO BRING  
GUSTY NORTHERLY WINDS.  
 
ACROSS THE SUNSHINE STATE, SCATTERED SHOWERS AND THUNDERSTORMS ARE  
EXPECTED TO LINGER ESPECIALLY FOR THE SOUTHERN PORTIONS OF THE  
FLORIDA PENINSULA THROUGH THE NEXT COUPLE OF DAYS DUE TO A STALLED  
FRONT.  
 
KONG  
 
GRAPHICS AVAILABLE AT  
HTTPS://WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  
 

 
 
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