877  
FXUS01 KWBC 271949  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
349 PM EDT FRI JUN 27 2025  
 
VALID 00Z SAT JUN 28 2025 - 00Z MON JUN 30 2025  
 
...THERE ARE HEAT ADVISORIES AND A FEW EXTREME HEAT WARNINGS  
ACROSS MUCH OF THE OHIO/TENNESSEE VALLEYS AND MIDDLE /LOWER  
MISSISSIPPI VALLEY...  
 
...THERE IS A SLIGHT RISK OF EXCESSIVE RAINFALL OVER PARTS OF THE  
CENTRAL APPALACHIANS AND NORTHERN MID-ATLANTIC ON FRIDAY...  
 
...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER PARTS OF  
THE NORTHERN/CENTRAL PLAINS AND GREAT LAKES ON FRIDAY AND THE  
UPPER MISSISSIPPI VALLEY AND NORTHERN/CENTRAL PLAINS SATURDAY AND  
SUNDAY...  
 
WITH THE RIDGE ALOFT WEAKENING THE SPATIAL EXTENT OF THE EXCESSIVE  
HEAT HAS SHRUNK DOWN TO THE MIDDLE/LOWER MISSISSIPPI VALLEY AND  
THE OHIO/TENNESSEE VALLEYS AND WILL CONTINUE REDUCING INTO THE  
WEEKEND. THIS HEAT LEVEL CAN BE DANGEROUS TO ANYONE WITHOUT  
EFFECTIVE COOLING AND/OR ADEQUATE HYDRATION, ESPECIALLY THOSE  
ENGAGING IN LENGTHY OUTDOOR ACTIVITIES. HEAT-RELATED ILLNESSES  
INCREASE SIGNIFICANTLY DURING EXTREME HEAT. WEAR LIGHTWEIGHT AND  
LOOSE-FITTING CLOTHING. TAKE ACTION WHEN YOU SEE SYMPTOMS OF HEAT  
EXHAUSTION AND HEAT STROKE.  
AFTERNOON HIGH TEMPERATURES ARE EXPECTED TO RETURN TO SEASONAL  
NORMAL FOR LATE JUNE.  
FOR SATURDAY AND SUNDAY, HIGH TEMPERATURES IN THE 80S TO LOWER 90S  
ARE FORECAST FOR MUCH OF THE EASTERN HALF OF THE COUNTRY.  
 
MEANWHILE A SURFACE LOW PRESSURE SYSTEM WILL TRACK FROM THE UPPER  
MIDWEST TO THE NORTHEAST BY SUNDAY WITH A SECONDARY WAVE TRACKING  
FROM THE NORTHERN HIGH PLAINS TO THE UPPER MISSISSIPPI VALLEY.  
SHOWERS AND SEVERE THUNDERSTORMS WILL DEVELOP ALONG AND AHEAD OF  
THE ASSOCIATED FRONT OVER PARTS OF THE NORTHERN/CENTRAL PLAINS.  
SPC HAS ISSUED A SLIGHT RISK (LEVEL 2/5) OF SEVERE WEATHER FOR  
PORTIONS OF THE NORTHERN/CENTRAL PLAINS INTO THE UPPER MISSISSIPPI  
VALLEY THROUGH SUNDAY MORNING. THE HAZARDS ASSOCIATED WITH THESE  
THUNDERSTORMS ARE FREQUENT LIGHTNING, SEVERE THUNDERSTORM WIND  
GUSTS, HAIL, AND A FEW TORNADOES. HOWEVER, THERE WILL BE AN  
INCREASED THREAT OF SEVERE THUNDERSTORM WIND GUSTS OF 65 KNOTS OR  
GREATER AND HAIL TWO INCHES OR GREATER OVER THE AREA.  
 
WPC HAS ISSUED A SLIGHT RISK (LEVEL 2/4) OF EXCESSIVE RAINFALL  
OVER PARTS OF THE CENTRAL APPALACHIANS AND NORTHERN MID-ATLANTIC  
THROUGH SATURDAY MORNING. THE ASSOCIATED HEAVY RAIN WILL CREATE  
MAINLY LOCALIZED AREAS OF FLASH FLOODING, WITH URBAN AREAS, ROADS,  
SMALL STREAMS, AND LOW-LYING AREAS THE MOST VULNERABLE. ELSEWHERE,  
SHOWERS AND THUNDERSTORMS WILL DEVELOP ON FRIDAY OVER PARTS OF THE  
OHIO/TENNESSEE VALLEYS, THE CENTRAL GULF COAST, AND THE SOUTHEAST.  
 
ON SATURDAY, A FRONT MOVING ACROSS THE NORTHERN PLAINS AND UPPER  
MISSISSIPPI VALLEY WILL PRODUCE SHOWERS AND SEVERE THUNDERSTORMS  
OVER PARTS OF THE UPPER MISSISSIPPI VALLEY AND THE NORTHERN  
PLAINS. SPC HAS ISSUED A SLIGHT RISK (LEVEL 2/5) OF SEVERE  
THUNDERSTORMS OVER PARTS OF THE UPPER MISSISSIPPI VALLEY AND THE  
NORTHERN PLAINS FROM SATURDAY THROUGH SUNDAY MORNING. THE HAZARDS  
ASSOCIATED WITH THESE THUNDERSTORMS ARE FREQUENT LIGHTNING, SEVERE  
THUNDERSTORM WIND GUSTS, HAIL, AND A FEW TORNADOES. FARTHER EAST  
SHOWERS AND THUNDERSTORMS WILL DEVELOP OVER PARTS OF THE LOWER  
GREAT LAKES TO THE NORTHEAST AS THE FRONT ADVANCES THROUGH THE  
AREA. THE OHIO VALLEY SOUTHWARD TO THE GULF COAST, DAYTIME HEATING  
AND AMPLE MOISTURE WILL PRODUCE SHOWERS AND THUNDERSTORMS OVER THE  
REGION. UPPER-LEVEL IMPULSES ARE FORECAST TO PRODUCE LIGHT RAIN  
THROUGH SATURDAY EVENING ALONG THE INTERNATIONAL BORDER FROM  
WASHINGTON TO MONTANA.  
 
CAMPBELL/ZIEGENFELDER  
 
GRAPHICS AVAILABLE AT  
HTTPS://WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  
 

 
 
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