Scattered thunderstorms developed during the afternoon on September 3rd and continued to develop into the early morning hours on September 4th. Some of these thunderstorms became severe. The main threats from these storms were damaging thunderstorm winds and large hail.

Thunderstorm Wind in DARKE, OHIO
From 03-SEP-11 19:28:00 to 03-SEP-11 19:36:00 (EST-5)
Location: GREENVILLE
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Numerous trees were down and a roof was removed from a barn due to damaging thunderstorm winds.

Thunderstorm Wind in MIAMI, OHIO
From 04-SEP-11 00:18:00 to 04-SEP-11 00:25:00 (EST-5)
Location: TIPP CITY
Magnitude: 60.00 EG
Property damage: 250.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Numerous large trees were sheared or uprooted. Nineteen loaded trailers were overturned and two air conditioning units were blown off a roof at a distribution center. Eight wooden high voltage electric poles were snapped. Another semi trailer was overturned on a highway. These occurrences were due to damaging thunderstorm winds.

Hail in MIAMI, OHIO
From 04-SEP-11 00:45:00 to 04-SEP-11 00:49:00 (EST-5)
Location: TIPP CITY
Magnitude: 0.75 
Reported by: Trained Spotter

Heavy Rain in MIAMI, OHIO
From 04-SEP-11 00:50:00 to 04-SEP-11 01:50:00 (EST-5)
Location: TIPP CITY
Reported by: Trained Spotter

High water was approaching homes due to heavy rain.

Thunderstorm Wind in MADISON, OHIO
From 04-SEP-11 02:00:00 to 04-SEP-11 02:04:00 (EST-5)
Location: PLUMWOOD
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees were reported down due to damaging thunderstorm winds.

Thunderstorm Wind in LOGAN, OHIO
From 03-SEP-11 15:00:00 to 03-SEP-11 15:04:00 (EST-5)
Location: HUNTSVILLE
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A barn was damaged due to thunderstorm winds.

Hail in DARKE, OHIO
From 03-SEP-11 19:23:00 to 03-SEP-11 19:27:00 (EST-5)
Location: GREENVILLE
Magnitude: 1.00 
Reported by: Public

Thunderstorm Wind in MONTGOMERY, OHIO
From 03-SEP-11 21:10:00 to 03-SEP-11 21:11:00 (EST-5)
Location: VANDALIA
Magnitude: 52.00 EG
Reported by: Trained Spotter

The spotter estimated the gust.

Thunderstorm Wind in PREBLE, OHIO
From 03-SEP-11 22:00:00 to 03-SEP-11 22:04:00 (EST-5)
Location: WEST ALEXANDRIA
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trees were reported down due to damaging thunderstorm winds.

Thunderstorm Wind in CHAMPAIGN, OHIO
From 03-SEP-11 23:05:00 to 03-SEP-11 23:19:00 (EST-5)
Location: URBANA
Magnitude: 50.00 EG
Property damage: 6.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous trees were down and large limbs were down on a house due to damaging thunderstorm winds.

Lightning in BUTLER, OHIO
From 04-SEP-11 02:30:00 to 04-SEP-11 02:31:00 (EST-5)
Location: WEST CHESTER
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

A man was struck and killed by lightning while camping.

Thunderstorm Wind in CLARK, OHIO
From 03-SEP-11 21:41:00 to 03-SEP-11 21:56:00 (EST-5)
Location: NEW CARLISLE
Magnitude: 52.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Multiple trees were down and siding was torn off a mobile home due to damaging thunderstorm winds. The spotter estimated the wind gust.

Thunderstorm Wind in DELAWARE, OHIO
From 03-SEP-11 23:20:00 to 03-SEP-11 23:24:00 (EST-5)
Location: DELAWARE
Magnitude: 50.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A two to three foot diameter tree was reported down. Several tree limbs fell on cars. Railroad crossing arm guard equipment was damaged. These occurrences were due to damaging thunderstorm winds.