333
FXUS01 KWBC 280800
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
400 AM EDT MON JUL 28 2025
VALID 12Z MON JUL 28 2025 - 12Z WED JUL 30 2025
...DERECHO LIKELY OVER PORTIONS OF THE NORTHERN PLAINS/UPPER
MIDWEST TODAY...
...EXCESSIVE RAINFALL CONCERNS SHIFT FROM NORTHERN PLAINS AND
UPPER MIDWEST TODAY SOUTH TO NORTH/CENTRAL PLAINS AND MIDDLE
MISSISSIPPI VALLEY ON TUESDAY...
...DANGEROUS, HEATWAVE UNDERWAY ACROSS THE SOUTHEAST U.S. THIS
WEEK...
THUNDERSTORMS ARE EXPECTED TO DEVELOP LATE THIS AFTERNOON BEFORE
CONGEALING INTO A DERECHO BY EARLY THIS EVENING OVER PARTS OF
EASTERN SOUTH DAKOTA. THIS DERECHO IS THEN EXPECTED TO MOVE
EAST-SOUTHEASTWARD INTO PARTS OF SOUTHERN MINNESOTA AND NORTHERN
IOWA. A MODERATE RISK (LEVEL 4/5) OF SEVERE THUNDERSTORMS IS IN
EFFECT FOR PORTIONS OF EASTERN SOUTH DAKOTA INTO SOUTHWESTERN
MINNESOTA. SEVERAL WIND GUSTS IN EXCESS OF 75 MPH, A FEW
LINE-EMBEDDED TORNADOES AND INSTANCES OF SEVERE HAIL ARE ALSO
PROBABLE, ACCORDING TO THE STORM PREDICTION CENTER. THERE'S ALSO A
HEAVY RAINFALL COMPONENT TO THE DERECHO THREAT TODAY. HIGH RAIN
RATES OVER SATURATED SOILS SHOULD LEAD TO SCATTERED TO ISOLATED
INSTANCES OF FLASH FLOODING OVER PORTIONS OF THE NORTHERN PLAINS
INTO THE UPPER MIDWEST. A SLIGHT RISK (AT LEAST 15% CHANCE) OF
EXCESSIVE RAINFALL IS IN EFFECT FOR PARTS OF EASTERN SOUTH DAKOTA
INTO SOUTHERN MINNESOTA AND NORTHERN IOWA AS A RESULT.
WHILE THE SEVERE WEATHER THREAT DIMINISHES ON TUESDAY, THE
EXCESSIVE RAINFALL THREAT DOES NOT. TUESDAY NIGHT STORMS
PROPAGATING FROM THE NORTHERN HIGH PLAINS TO THE LOWER MISSOURI
VALLEY COULD PRODUCE SOME HIGH RAIN RATES OVER SENSITIVE SURFACES.
A SLIGHT RISK OF EXCESSIVE RAINFALL IS IN EFFECT FROM SOUTHEASTERN
MONTANA THROUGH PARTS OF NORTHEASTERN WYOMING, WESTERN SOUTH
DAKOTA, MUCH OF NEBRASKA AND WESTERN IOWA.
EXTREME HEAT IS EXPECTED TO CONTINUE ACROSS MUCH OF THE SOUTHEAST
AND THIS WEEK, WITH THE MOST DANGEROUS COMBINATION OF HIGH
TEMPERATURES AND HUMIDITY OCCURRING THROUGH WEDNESDAY. HEAT LEVELS
WILL BE DANGEROUS FOR ANYONE WITHOUT ADEQUATE COOLING OR
HYDRATION. HIGH TEMPERATURES WILL SOAR INTO THE UPPER 90S TO LOW
100S, WITH HEAT INDEX VALUES ("FEELS LIKE" TEMPERATURES)
SURPASSING 110--115 DEGREES. SEVERAL MAJOR METROPOLITAN
AREAS--INCLUDING RALEIGH, CHARLOTTE AND ORLANDO ARE EXPECTED TO
EXPERIENCE EXTREME HEATRISK, WITH OVER 18 MILLION PEOPLE IMPACTED
AT THE PEAK TODAY.
KEBEDE
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