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
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