A decaying mesoscale convective system moved into northwest Illinois, mainly along and south of Interstate 80, during the morning hours of July 20th. These showers and storms produced heavy rain with trained spotters reporting 2 to 4 inches of rain.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS DVN wrote it up.
A decaying mesoscale convective system moved into northwest Illinois, mainly along and south of Interstate 80, during the morning hours of July 20th. These showers and storms produced heavy rain with trained spotters reporting 2 to 4 inches of rain. This lead to flash flooding in part of Bureau County.
The Quad Cities radar (KDVN), 98 km away, was scanning. The volume nearest the first event began at 14:50 UTC.
1 flash flood. Local standard time, as filed.
The Emergency Manager reported that the road was completely covered with water that was a couple of feet deep. Water was also in the yards across this area. .
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Illinois in 2025Every state in 2025This day in weather historyWarnings in Illinois, July 2025
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 1282388.