4 flash flood, 2 thunderstorm wind, as filed by the National Weather Service.
Every event with a place to put it; 4 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
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 local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Wilmington, OH wrote its last area forecast discussion before the first event at Jul 25, 9:25 AM EST, 2 hours 35 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE WILMINGTON OH 1025 AM EDT WED JUL 25 2001 E-W FRONTAL BNDRY FM PA ACRS NRN OH...IN AND INTO NRN IL. MID LVL S/WV OVR MID MS VLY TO TRACK E INTO OH VLY TDA/TNGT. INTO SFC WV XPCTD TO TRACK INTO W CNTRL OH THIS AFTN. FAVORABLE LO LVL CNVRGC TO CONT ACRS PORTIONS OF W CNTRL AND CNTRL OH TDA CLOSE TO VCNTY OF BNDRY. WL CONT LKLY POPS IN THE NRN SECTIONS OF FA. FARTHER S XPCT TO SEE SCTD TSTMS DVLP DURG THE AFTN AND THEN INCRS TNGT AS FNTL BNDRY DROPS S INTO SRN OH. WL DROP THIS AFTN/S PRECIP POPS INTO THE CHC CAT IN THE S TDA...CONTG LKLY POPS TNGT. TEMP WISE...ILN ALREADY SITTING AT 84 DEGS. ENERGY BLOCK METHOD YIELDS HI/S ARND 90 WHICH ARE BACKED UP BY LCL THICKNESS SCHEME. WL ADJUST NRN KY AND S CNTRL OH TO ARND 90 AND DAY AND SW OH INTO UPR 80S. ACRS THE NRN MIAMI VLY WHERE MORE CLDS/PRECIP AND ERLY FLO WL BE OBSERVED WL OPEN UP 80-85 RANGE. XPCT STORMS TO TRACK SLOWLY E WITH PROPAGATION TO THE S/SW. THIS IMPLIES SOME BACKBUIDING POTENTIAL. WITH PW/S RUNNING ARND 1.8 INCHES AND PE/S ARND 1.6 XPCT TO SEE HVY RAIN TDA/TNGT. HEAVIEST RAIN THRU AFTN APPEARS TARGETED FOR MIAMI VALLEY AND PORTIONS BOF CNTRL OH. WL CONT ESF AND HVY RAIN MENT IN ZONES. FFA MAY BE REQUIRED WITH 4 PM PACKAGE. .ILN...NONE. AR
The Cincinnati radar (KILN), 93 km away, was scanning. The volume nearest the first event began at 22:57 UTC.
4 flash flood, 2 thunderstorm wind. Local standard time, as filed.
Thunderstorms produced heavy rain causing three feet of water on roads.
Thunderstorms produced strong winds which knocked down trees.
Thunderstorms produced strong winds which were estimated at Wright-Patterson Air Force Base at 60 mph.
Thunderstorms produced heavy rain which caused high water on roads.
Thunderstorms produced heavy rain which caused high water on roads.
Thunderstorms produced heavy rain which caused high water on roads.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Ohio in 2001Every state in 2001This day in weather historyWarnings in Ohio, July 2001
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: 5257037, 5257091, 5257092, 5257093, 5257094, 5257095.