359  
FXUS01 KWBC 130741  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
341 AM EDT FRI JUN 13 2025  
 
VALID 12Z FRI JUN 13 2025 - 12Z SUN JUN 15 2025  
 
...HEAVY TO EXCESSIVE RAINFALL LIKELY ACROSS PORTIONS OF THE  
EAST-CENTRAL U.S. OVER THE NEXT COUPLE OF DAYS...  
 
...HEATWAVE EXPECTED FOR THE DESERT SOUTHWEST WITH HIGHS REACHING  
THE 110S BY THIS WEEKEND...  
 
THE MAIN THING MAKING WEATHER HEADLINES FRIDAY AND INTO THE  
WEEKEND WILL BE THE WIDESPREAD COVERAGE OF SHOWERS AND  
THUNDERSTORMS ACROSS MUCH OF THE CENTRAL AND EASTERN U.S., WITH A  
PARTICULAR FOCUS ACROSS SOUTHEAST TEXAS, THE MID-SOUTH, AND  
PORTIONS OF VIRGINIA. AREAS FROM THE GREATER CHICAGO METRO AREA  
TO WASHINGTON D.C. WILL MARK THE GENERAL PLACEMENT OF A SLOW  
MOVING FRONTAL BOUNDARY, AND AREAS SOUTH OF THAT WILL BE IN A WARM  
AND HUMID AIRMASS WITH MULTIPLE WEAK DISTURBANCES ALOFT THAT WILL  
HELP TO GENERATE DAILY SHOWERS AND THUNDERSTORMS. MULTIPLE SLIGHT  
RISK AREAS OF EXCESSIVE RAINFALL ARE IN EFFECT FOR PORTIONS OF  
THESE AREAS ON FRIDAY, AND VIRGINIA ALSO WILL HAVE A SLIGHT RISK  
OF EXCESSIVE RAINFALL ON SATURDAY WITH SLOW MOVING SHOWERS AND  
STORMS CONTINUING NEAR THE INTERSTATE 64 CORRIDOR.  
 
ANOTHER AREA OF MODERATE TO HEAVY RAINFALL IS ALSO EXPECTED ACROSS  
PORTIONS OF THE UPPER MIDWEST, MAINLY OVER CENTRAL MINNESOTA  
THROUGH MIDDAY FRIDAY WHERE 1 TO 2 INCHES IS CURRENTLY FORECAST.  
THIS MAY BE ENOUGH TO RESULT IN SOME LOCALIZED FLOODING ISSUES,  
AND WPC HAS A MARGINAL RISK OF EXCESSIVE RAINFALL FOR FRIDAY TO  
ACCOUNT FOR THIS, ALTHOUGH THE HEAVIEST RAINFALL IS EXPECTED PRIOR  
TO DAYBREAK FRIDAY. THIS WILL BE THE RESULT OF MOISTURE FROM THE  
SOUTH INTERSECTING A FRONTAL BOUNDARY PAIRED WITH A MID-LEVEL  
SHORTWAVE DISTURBANCE MOVING THROUGH THE REGION. FARTHER WEST  
ACROSS THE WESTERN HIGH PLAINS, SCATTERED SEVERE THUNDERSTORMS ARE  
FORECAST TO DEVELOP ON FRIDAY FROM SOUTHERN MONTANA TO THE TEXAS  
PANHANDLE AS A MID-UPPER LEVEL SHORTWAVE TRACKS FROM THE PACIFIC  
NORTHWEST TOWARDS THIS REGION.  
 
IT WILL CONTINUE TO BE QUITE WARM AND DRY FRIDAY AND INTO THE  
WEEKEND ACROSS MUCH OF THE INTERIOR WESTERN U.S. AS AN UPPER LEVEL  
RIDGE GOVERNS THE OVERALL WEATHER PATTERN. THE MOST IMPACTFUL  
HEAT WILL BE ACROSS THE LOWER ELEVATIONS OF THE DESERT SOUTHWEST  
WHERE AFTERNOON HIGHS WILL REACH 105 TO 110 DEGREES THROUGH  
FRIDAY, AND THEN REACHING THE 110S OVER THE WEEKEND. THEREFORE,  
AN EXTREME HEAT WARNING IS NOW IN EFFECT ACROSS MOST OF SOUTHERN  
ARIZONA AND INTO EXTREME SOUTHEAST CALIFORNIA AS THE HEATWAVE  
BUILDS. THERE ARE ALSO SOME ELEVATED FIRE WEATHER CONCERNS ACROSS  
PORTIONS OF WESTERN NEVADA, AND ALSO CENTRAL OREGON AND WASHINGTON  
ON FRIDAY OWING TO DRY CONDITIONS AND GUSTY WINDS. A COLD FRONT  
DROPPING SOUTHEAST ACROSS THE PACIFIC NORTHWEST WILL RESULT IN AN  
ABATEMENT OF THE ONGOING HEAT AND A RETURN TO MORE SEASONABLE  
CONDITIONS FOR MUCH OF WASHINGTON AND OREGON. THE COOLEST AREAS  
IN THE COUNTRY WILL BE NORTH OF A FRONTAL BOUNDARY ACROSS THE  
NORTHERN PLAINS AND GREAT LAKES AREAS, WITH REFRESHINGLY COOL  
CONDITIONS AND HIGHS MAINLY IN THE 60S.  
 
HAMRICK  
 
GRAPHICS AVAILABLE AT  
HTTPS://WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  
 

 
 
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