Thunderstorms developed and moved westward across parts of the the Ohio Valley ahead of a wave of low pressure during the evening. Some of these storms became organized, producing a threat of damaging winds and isolated sub severe hail.

Thunderstorm Wind in PREBLE, OHIO
From 21-SEP-12 19:42:00 to 21-SEP-12 19:46:00 (EST-5)
Location: WEST MANCHESTER
Magnitude: 50.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Public

Three trees were damaged near West Manchester due to thunderstorm winds. A vehicle, car port, fence, and two houses also sustained damage.

Thunderstorm Wind in DELAWARE, OHIO
From 21-SEP-12 21:15:00 to 21-SEP-12 21:19:00 (EST-5)
Location: POWELL
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A tree was downed in Liberty Township due to damaging thunderstorm winds.

Thunderstorm Wind in FRANKLIN, OHIO
From 21-SEP-12 21:23:00 to 21-SEP-12 21:27:00 (EST-5)
Location: WESTERVILLE
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Public

Tree limbs were downed in the area of Westerville due to thunderstorm winds.

Thunderstorm Wind in DELAWARE, OHIO
From 21-SEP-12 21:33:00 to 21-SEP-12 21:37:00 (EST-5)
Location: CENTER VLG
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A tree was downed near Center Village due to thunderstorm winds.

Thunderstorm Wind in LICKING, OHIO
From 21-SEP-12 21:38:00 to 21-SEP-12 21:42:00 (EST-5)
Location: CROTON
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A tree fell onto power lines and caught fire in Hartford due thunderstorm winds.

Hail in MONTGOMERY, OHIO
From 21-SEP-12 21:00:00 to 21-SEP-12 21:04:00 (EST-5)
Location: HEMPSTEAD
Magnitude: 0.88 
Reported by: Amateur Radio

Thunderstorm Wind in DARKE, OHIO
From 21-SEP-12 19:46:00 to 21-SEP-12 19:50:00 (EST-5)
Location: GORDON
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees were reported down near Highway 722 due to thunderstorm winds.

Thunderstorm Wind in FRANKLIN, OHIO
From 21-SEP-12 21:10:00 to 21-SEP-12 21:14:00 (EST-5)
Location: HILLIARD
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Public

Trees were downed near Hilliard due to damaging thunderstorm winds.

Thunderstorm Wind in CHAMPAIGN, OHIO
From 21-SEP-12 20:25:00 to 21-SEP-12 20:29:00 (EST-5)
Location: WESTVILLE
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several trees were downed along Old Troy Pike due to thunderstorm winds.

Thunderstorm Wind in CHAMPAIGN, OHIO
From 21-SEP-12 20:32:00 to 21-SEP-12 20:36:00 (EST-5)
Location: URBANA
Magnitude: 50.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Law Enforcement

At least four trees were downed in Urbana due to thunderstorm winds. Structural damage also occurred to a house.

Thunderstorm Wind in DARKE, OHIO
From 21-SEP-12 19:35:00 to 21-SEP-12 19:39:00 (EST-5)
Location: NEW MADISON
Magnitude: 50.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A large chicken barn was blown over as well as trees and power lines downed south of New Madison due to thunderstorm winds.

Thunderstorm Wind in FRANKLIN, OHIO
From 21-SEP-12 21:17:00 to 21-SEP-12 21:21:00 (EST-5)
Location: RIVERLEA
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Tree branches were downed and a tree was split in half near Worthington due to damaging thunderstorm winds.