089  
FXUS01 KWBC 220718  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
317 AM EDT SUN JUN 22 2025  
 
VALID 12Z SUN JUN 22 2025 - 12Z TUE JUN 24 2025  
 
...EXTREMELY DANGEROUS HEAT WAVE EXPANDS FROM MIDWEST TO EAST  
COAST THIS WEEK...  
 
...SEVERE WEATHER AND EXCESSIVE RAINFALL POTENTIAL FOR PORTIONS OF  
THE GREAT PLAINS AND UPPER MIDWEST/GREAT LAKES EARLY THIS WEEK...  
 
EXTREME HEAT SHIFTS FROM THE NORTHERN PLAINS TO THE MIDWEST AND  
GREAT LAKES TODAY, THEN EXPANDS INTO THE EAST COAST FOR THE REST  
OF THE WEEK. NUMEROUS DAILY RECORD MAXIMUM AND MINIMUM  
TEMPERATURES ARE EXPECTED OVER THE MIDWEST TO EAST COAST THROUGH  
WEDNESDAY. LIGHT WINDS, SUNNY SKIES, AND A LACK OF OVERNIGHT  
COOLING WILL POSE A SIGNIFICANT RISK TO THOSE WITHOUT ADEQUATE  
COOLING AND/OR HYDRATION. THE MOST SIGNIFICANT HEAT IMPACTS ARE  
ANTICIPATED ACROSS THE MID-ATLANTIC AND OHIO VALLEY. DENSELY  
POPULATED URBAN AREAS LIKE COLUMBUS, OH; PITTSBURGH, PA; AND  
WASHINGTON D.C. ARE AMONG THE MOST VULNERABLE. 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.  
 
ELSEWHERE, A SLOW MOVING SURFACE FRONT WILL BE THE FOCUS FOR  
THUNDERSTORM ACTIVITY ACROSS THE CENTRAL U.S. EARLY THIS WEEK.  
DRYLINE STORMS COULD PRODUCE TRAINING CELLS THAT MAY LEAD TO FLASH  
FLOODING IN PARTS OF THE SOUTHERN HIGH PLAINS TODAY AND MONDAY.  
THUS, A SLIGHT RISK (AT LEAST 15%) OF EXCESSIVE RAINFALL IS IN  
EFFECT FROM SOUTHEASTERN NEW MEXICO TO WEST TEXAS. STORMS FORMING  
ALONG THE SURFACE FRONT OVER THE GREAT PLAINS COULD TURN SEVERE  
OVER THE NEXT COUPLE OF DAYS, WHICH IS WHY THE STORM PREDICTION  
CENTER ISSUED A PAIR OF SLIGHT RISKS (LEVEL 2/5) FOR WIDE SWATHS  
OF THE PLAINS AND UPPER MIDWEST/GREAT LAKES, CITING SEVERE GUSTS  
AND HAIL AS THE MAIN THREATS. SOME STORM CELLS COULD PRODUCE  
ADDITIONAL FLASH FLOODING ACROSS PORTIONS OF NORTHERN KANSAS,  
SOUTHEASTERN NEBRASKA AND MUCH OF IOWA, WHERE A SLIGHT RISK OF  
EXCESSIVE RAINFALL IS IN EFFECT ON MONDAY.  
 
TODAY'S HIGH TEMPERATURES IN PARTS OF THE NORTHERN ROCKIES/HIGH  
PLAINS, GREAT BASIN AND INTERMOUNTAIN WEST WILL BE BETWEEN 20-35  
DEGREES BELOW AVERAGE. SNOW SHOWERS ARE ALSO POSSIBLE OVER THE  
PEAKS OF THE DIFFERENT MOUNTAIN RANGES WITHIN THE NORTHERN ROCKIES  
OF CENTRAL IDAHO, SOUTHWEST MONTANA AND NORTHWEST WYOMING TODAY.  
 
KEBEDE  
 
GRAPHICS AVAILABLE AT  
HTTPS://WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  
 
 
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