Hail, Darke
- When
- July 27, 3:58 PM EST to 4:00 PM EST
- Where
- Darke County, Ansonia
- Measured
- 0.75 in hail
- Coordinates
- 40.220, -84.630
Flash Flooding and Hail in Ohio, July 27, 1997
The second Mesoscale Convective System in less than 24 hours affected much of central Ohio with strong winds and heavy rainfall. This area of storms also affected much of southern Ohio.
Where it happened
Every event with a place to put it; 2 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- $86,000
- Crop damage
- None recorded
- Events
- 19
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.
What happened
The episode as NWS ILN wrote it up.
The second Mesoscale Convective System in less than 24 hours affected much of central Ohio with strong winds and heavy rainfall. This area of storms also affected much of southern Ohio.
The radar
The Cincinnati radar (KILN), 113 km away, was scanning. The volume nearest the first event began at 20:59 UTC.
Event by event
16 thunderstorm wind, 2 flash flood, 1 hail. Local standard time, as filed.
Thunderstorm Wind, Mercer
- When
- July 27, 4:00 PM EST to 4:05 PM EST
- Where
- Mercer County, 1 mi N of Montezuma
- Measured
- 50 kt (58 mph)
- Property damage
- $3,000
- Coordinates
- 40.500, -84.550
Numerous trees downed.
Thunderstorm Wind, Miami
- When
- July 27, 4:00 PM EST to 4:05 PM EST
- Where
- Miami County, Troy
- Measured
- 50 kt (58 mph)
- Property damage
- $3,000
- Coordinates
- 40.050, -84.200
Several trees downed.
Thunderstorm Wind, Clark
- When
- July 27, 4:20 PM EST to 4:25 PM EST
- Where
- Clark County, New Carlisle
- Measured
- 50 kt (58 mph)
- Property damage
- $3,000
- Coordinates
- 39.930, -84.030
Trees downed.
Thunderstorm Wind, Hardin
- When
- July 27, 4:45 PM EST to 4:50 PM EST
- Where
- Hardin County, Mc Guffey
- Measured
- 50 kt (58 mph)
- Property damage
- $3,000
- Coordinates
- 40.680, -83.780
Trees knocked down.
Thunderstorm Wind, Montgomery
- When
- July 27, 4:57 PM EST to 5:00 PM EST
- Where
- Montgomery County, Huber Hgts
- Measured
- 50 kt (58 mph)
- Property damage
- $5,000
- Coordinates
- 39.830, -84.130
Numerous large limbs and power lines downed.
Thunderstorm Wind, Warren
- When
- July 27, 5:00 PM EST to 5:24 PM EST
- Where
- Warren County, Lebanon to 2 mi W of Mason
- Measured
- 50 kt (58 mph)
- Property damage
- $5,000
- Coordinates
- 39.430, -84.230
Trees and power lines downed.
Thunderstorm Wind, Butler
- When
- July 27, 5:10 PM EST
- Where
- Butler County, Hamilton
- Measured
- 52 kt (60 mph)
- Coordinates
- 39.400, -84.550
An observer reported a wind gust to 60 mph.
Thunderstorm Wind, Champaign
- When
- July 27, 5:18 PM EST to 5:25 PM EST
- Where
- Champaign County, Urbana
- Measured
- 50 kt (58 mph)
- Property damage
- $5,000
- Coordinates
- 40.120, -83.750
Numerous trees downed.
Thunderstorm Wind, Hamilton
- When
- July 27, 5:40 PM EST to 5:45 PM EST
- Where
- Hamilton County, Cincinnati
- Measured
- 50 kt (58 mph)
- Property damage
- $3,000
- Coordinates
- 39.120, -84.550
Trees downed.
Thunderstorm Wind, Delaware
- When
- July 27, 6:00 PM EST to 6:05 PM EST
- Where
- Delaware County, Lewis Center
- Measured
- 50 kt (58 mph)
- Property damage
- $5,000
- Coordinates
- 40.200, -83.020
Trees and power lines.
Thunderstorm Wind, Fairfield
- When
- July 27, 6:00 PM EST to 6:05 PM EST
- Where
- Fairfield County, Pickerington
- Measured
- 50 kt (58 mph)
- Property damage
- $3,000
- Coordinates
- 39.880, -82.750
Several trees downed.
Thunderstorm Wind, Fayette
- When
- July 27, 6:00 PM EST to 6:05 PM EST
- Where
- Fayette County, Buena Vista
- Measured
- 50 kt (58 mph)
- Property damage
- $3,000
- Coordinates
- 39.420, -83.500
Many trees downed.
Thunderstorm Wind, Licking
- When
- July 27, 6:45 PM EST to 7:00 PM EST
- Where
- Licking County, Countywide
- Measured
- 50 kt (58 mph)
- Property damage
- $10,000
- Coordinates
- 40.120, -82.470
Numerous trees downed.
Thunderstorm Wind, Ross
- When
- July 27, 6:55 PM EST to 7:00 PM EST
- Where
- Ross County, Chillicothe
- Measured
- 50 kt (58 mph)
- Property damage
- $5,000
- Coordinates
- 39.330, -82.980
Trees and power lines downed.
Thunderstorm Wind, Clermont
- When
- July 27, 7:24 PM EST to 7:35 PM EST
- Where
- Clermont County, Countywide
- Measured
- 50 kt (58 mph)
- Property damage
- $10,000
- Coordinates
- 38.980, -84.150
Numerous trees and power lines downed.
Thunderstorm Wind, Clinton
- When
- July 27, 7:30 PM EST to 7:45 PM EST
- Where
- Clinton County, Countywide
- Measured
- 50 kt (58 mph)
- Property damage
- $10,000
- Coordinates
- 39.400, -83.780
Many trees downed.
Flash Flood, Licking
- When
- July 27, 8:00 PM EST to 9:45 PM EST
- Where
- Licking County, Countywide
- Property damage
- $5,000
- Coordinates
- 40.092, -82.483 (the zone’s center; the record gives no point)
Heavy rainfall on already saturated ground caused creeks and streams to rise out of their banks, mainly in the eastern half of the county.
Flash Flood, Fairfield
- When
- July 27, 8:30 PM EST to 9:45 PM EST
- Where
- Fairfield County, Millersport
- Property damage
- $5,000
- Coordinates
- 39.752, -82.631 (the zone’s center; the record gives no point)
Several roads were closed across the county due to heavy rainfall.
What these are
- Hail
- Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
- Thunderstorm Wind
- Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
- Flash Flood
- Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Heat in Pennsylvania, July 27 to 28, 1997
- Hail in Colorado, July 27, 1997
- Flash Flood and Hail in West Virginia, July 27, 1997
- Damaging Wind in South Dakota, July 27, 1997
- Damaging Wind in South Dakota, July 27, 1997
- Hail and Damaging Wind in South Dakota, July 27, 1997
- Hail and Damaging Winds in Michigan, July 27, 1997
- Damaging Winds in Georgia, July 27, 1997
- Hail and Damaging Wind in South Dakota, July 27, 1997
- Flash Flooding and Lightning Strike in Colorado, July 27, 1997
- Damaging Wind in Iowa, July 27, 1997
- Damaging Wind in Iowa, July 27, 1997
More
Every storm in Ohio in 1997Every state in 1997This day in weather historyWarnings in Ohio, July 1997
Sources
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: 5612380, 5612308, 5612381, 5612393, 5612382, 5612383, 5612395, 5612384, 5612394, 5612385, 5612386, 5612387, 5612389, 5612390, 5612388, 5612391, 5612392, 5612397, 5612396.