Ohio, 1999

Flash Flooding and Hail in Ohio, June 9, 1999

June 9, 1999 · NWS ILN · 6 events in 3 counties and zones

4 hail, 2 flash flood, as filed by the National Weather Service.

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

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The toll

Deaths
0
Injuries
0
Property damage
$3,000
Crop damage
None recorded
Events
6

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 radar

The Cincinnati radar (KILN), 105 km away, was scanning. The volume nearest the first event began at 17:37 UTC.

Open the radar archive at this moment

Event by event

4 hail, 2 flash flood. Local standard time, as filed.

Flash Flood, Darke

When
June 9, 12:25 PM EST to 1:00 PM EST
Where
Darke County, Arcanum
Property damage
$1,000
Reported by
LAW ENFORCEMENT
Coordinates
40.133, -84.619 (the zone’s center; the record gives no point)

Flooding was reported in the city of Arcanum.

Hail, Darke

When
June 9, 12:35 PM EST to 12:40 PM EST
Where
Darke County, Arcanum
Measured
0.75 in hail
Property damage
$2,000
Reported by
LAW ENFORCEMENT
Coordinates
39.980, -84.550

A thunderstorm produced dime size hail and strong wind that caused a tree to fall on a parked truck.

Hail, Mercer

When
June 9, 1:30 PM EST to 1:35 PM EST
Where
Mercer County, Celina
Measured
0.75 in hail
Reported by
LAW ENFORCEMENT
Coordinates
40.550, -84.570

Dime size hail was reported with a thunderstorm.

Hail, Darke

When
June 9, 1:45 PM EST to 1:50 PM EST
Where
Darke County, 1 mi W of Osgood
Measured
0.75 in hail
Reported by
LAW ENFORCEMENT
Coordinates
40.330, -84.500

Dime size hail was reported with a thunderstorm.

Flash Flood, Mercer

When
June 9, 2:26 PM EST to 3:00 PM EST
Where
Mercer County, 10 mi S of Celina
Reported by
LAW ENFORCEMENT
Coordinates
40.540, -84.629 (the zone’s center; the record gives no point)

High water was reported on area roadways in the vicinities of Coldwater.

Hail, Preble

When
June 9, 3:30 PM EST to 3:35 PM EST
Where
Preble County, New Hope
Measured
0.75 in hail
Reported by
LAW ENFORCEMENT
Coordinates
39.780, -84.720

Dime size hail was reported with a thunderstorm.

What these are

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.
Hail
Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Ohio in 1999Every state in 1999This day in weather historyWarnings in Ohio, June 1999

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: 5704853, 5704848, 5704849, 5704850, 5704852, 5704851.