A quasi-linear convective system moved across an unstable airmass and produced widespread severe weather.

Thunderstorm Wind in HIGHLAND, OHIO
From 23-MAY-11 19:11:00 to 23-MAY-11 19:15:00 (EST-5)
Location: HILLSBORO
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

Trees were blown down due to damaging thunderstorm winds.  One tree fell onto a house due to the winds.

Thunderstorm Wind in BROWN, OHIO
From 23-MAY-11 18:58:00 to 23-MAY-11 19:02:00 (EST-5)
Location: GEORGETOWN
Magnitude: 60.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A roof was partially removed from a bowling alley and a house was also damaged due to thunderstorm winds.

Thunderstorm Wind in LOGAN, OHIO
From 23-MAY-11 19:10:00 to 23-MAY-11 19:11:00 (EST-5)
Location: BELLEFONTAINE ARPT
Magnitude: 50.00 MG
Reported by: AWOS

Thunderstorm Wind in UNION, OHIO
From 23-MAY-11 19:43:00 to 23-MAY-11 19:44:00 (EST-5)
Location: MRYSVLL UNION CO ARP
Magnitude: 52.00 MG
Reported by: AWOS

Thunderstorm Wind in UNION, OHIO
From 23-MAY-11 19:40:00 to 23-MAY-11 19:44:00 (EST-5)
Location: MARYSVILLE
Magnitude: 50.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A barn and roof was damaged due to thunderstorm winds.

Thunderstorm Wind in FAYETTE, OHIO
From 23-MAY-11 19:28:00 to 23-MAY-11 19:29:00 (EST-5)
Location: FAYETTE CO ARPT
Magnitude: 55.00 MG
Reported by: AWOS

Thunderstorm Wind in PICKAWAY, OHIO
From 23-MAY-11 19:54:00 to 23-MAY-11 20:03:00 (EST-5)
Location: WILLIAMSPORT
Magnitude: 55.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A large pole barn was destroyed due to thunderstorm winds.

Thunderstorm Wind in CHAMPAIGN, OHIO
From 23-MAY-11 19:47:00 to 23-MAY-11 19:51:00 (EST-5)
Location: MECHANICSBURG
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A tree was reported down due to damaging thunderstorm winds.

Thunderstorm Wind in FRANKLIN, OHIO
From 23-MAY-11 19:53:00 to 23-MAY-11 19:54:00 (EST-5)
Location: OBETZ
Magnitude: 56.00 MG
Reported by: Broadcast Media

Thunderstorm Wind in UNION, OHIO
From 23-MAY-11 19:36:00 to 23-MAY-11 19:40:00 (EST-5)
Location: UNIONVILLE CENTER
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Broadcast Media

One tree was reported down due to damaging thunderstorm winds.

Thunderstorm Wind in FRANKLIN, OHIO
From 23-MAY-11 19:39:00 to 23-MAY-11 19:43:00 (EST-5)
Location: HILLIARD
Magnitude: 50.00 EG
Property damage: 8.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A large trailer was blown over due to damaging thunderstorm winds.

Thunderstorm Wind in FRANKLIN, OHIO
From 23-MAY-11 19:50:00 to 23-MAY-11 19:51:00 (EST-5)
Location: (OSU)OH ST UNIV ARPT
Magnitude: 50.00 MG
Reported by: ASOS

Thunderstorm Wind in FRANKLIN, OHIO
From 23-MAY-11 19:47:00 to 23-MAY-11 19:51:00 (EST-5)
Location: UPPER ARLINGTON
Magnitude: 52.00 EG
Reported by: Amateur Radio

The wind gust was estimated by the observer.

Thunderstorm Wind in FRANKLIN, OHIO
From 23-MAY-11 19:55:00 to 23-MAY-11 19:56:00 (EST-5)
Location: COLUMBUS
Magnitude: 52.00 EG
Reported by: Trained Spotter

The wind gust was estimated by the spotter.

Thunderstorm Wind in ROSS, OHIO
From 23-MAY-11 19:34:00 to 23-MAY-11 19:42:00 (EST-5)
Location: FRANKFORT
Magnitude: 55.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Several power poles and trees were reported down due to damaging thunderstorm winds.  A camper was also damaged due to the winds.

Thunderstorm Wind in HIGHLAND, OHIO
From 23-MAY-11 19:10:00 to 23-MAY-11 19:14:00 (EST-5)
Location: HILLSBORO
Magnitude: 55.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: NWS Employee

Trees and power lines were down due to damaging thunderstorm winds.  A barn was also damaged due to the winds.

Thunderstorm Wind in SCIOTO, OHIO
From 23-MAY-11 20:00:00 to 23-MAY-11 20:01:00 (EST-5)
Location: PORTSMOUTH
Magnitude: 61.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Public

Trees were down on power lines due to damaging thunderstorm winds.

Thunderstorm Wind in SCIOTO, OHIO
From 23-MAY-11 20:00:00 to 23-MAY-11 20:01:00 (EST-5)
Location: WEST PORTSMOUTH
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trees were down due to damaging thunderstorm winds.

Thunderstorm Wind in FRANKLIN, OHIO
From 23-MAY-11 20:00:00 to 23-MAY-11 20:05:00 (EST-5)
Location: PICKERINGTON
Magnitude: 50.00 EG
Property damage: 9.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A trailer was blown over and a tree was down due to damaging thunderstorm winds.

Thunderstorm Wind in HOCKING, OHIO
From 23-MAY-11 20:15:00 to 23-MAY-11 20:18:00 (EST-5)
Location: HESBORO
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A large tree fell and damaged a home due to thunderstorm winds.

Tornado in GREENE, OHIO
From 23-MAY-11 18:55:00 to 23-MAY-11 18:56:00 (EST-5)
Location: BRYON
Tornado F-scale: EF1
Property damage: 3.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Numerous trees were snapped and uprooted along a path across a golf course.  Many of the trees were oriented so that they converged toward the center of the path.  The tornado first touched down along the western edge of the golf course and then continued to the east northeast.  The tornado lifted near a grove of trees east of the golf course.  The estimated maximum wind speed based on damage was 90 miles per hour.

Thunderstorm Wind in FAIRFIELD, OHIO
From 23-MAY-11 20:10:00 to 23-MAY-11 20:14:00 (EST-5)
Location: LANCASTER
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Large tree limbs were reported down due to damaging thunderstorm winds.

Thunderstorm Wind in FAIRFIELD, OHIO
From 23-MAY-11 20:15:00 to 23-MAY-11 20:16:00 (EST-5)
Location: LANCASTER
Magnitude: 50.00 MG
Reported by: Trained Spotter

Tornado in CLARK, OHIO
From 23-MAY-11 19:10:00 to 23-MAY-11 19:11:00 (EST-5)
Location: VILLA
Tornado F-scale: EF1
Property damage: 15.00K
Crop damage: 3.00K
Reported by: NWS Storm Survey

Concrete blocks were lifted onto a roof, convergence was noted in a wheat field south of a farm house, four power poles were knocked down, and one house had insulation pulled out of it due to the tornado.  The maximum estimated wind speeds based on damage was around 90 miles per hour.

Thunderstorm Wind in PREBLE, OHIO
From 23-MAY-11 17:57:00 to 23-MAY-11 18:01:00 (EST-5)
Location: COLLEGE CORNER
Magnitude: 70.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Large trees were reported down due to damaging thunderstorm winds.

Tornado in CLERMONT, OHIO
From 23-MAY-11 18:43:00 to 23-MAY-11 18:44:00 (EST-5)
Location: MOORES FORK
Tornado F-scale: EF0
Property damage: 30.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

The tornado blew down two high voltage towers along the Taylor Pike Road and destroyed a metal barn. The debris from the barn was deposited 300 to 400 feet across a field and into a tree line. A couple pieces of debris from the frame of the barn were impaled into the field. There were also some snapped trees and branches down along the tree line. The maximum estimated wind speed based on damage was 85 miles per hour.

Thunderstorm Wind in HAMILTON, OHIO
From 23-MAY-11 18:12:00 to 23-MAY-11 18:13:00 (EST-5)
Location: BRIDGETOWN
Magnitude: 56.00 MG
Reported by: Trained Spotter

Thunderstorm Wind in HAMILTON, OHIO
From 23-MAY-11 18:12:00 to 23-MAY-11 18:13:00 (EST-5)
Location: CHEVIOT
Magnitude: 61.00 MG
Reported by: Trained Spotter

Thunderstorm Wind in HAMILTON, OHIO
From 23-MAY-11 18:19:00 to 23-MAY-11 18:23:00 (EST-5)
Location: DEER PARK
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Trees were reported down due to damaging thunderstorm winds.  One of the trees fell on a car.

Thunderstorm Wind in HAMILTON, OHIO
From 23-MAY-11 18:10:00 to 23-MAY-11 18:14:00 (EST-5)
Location: DELHI
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Large tree limbs were snapped due to damaging thunderstorm winds.

Thunderstorm Wind in HAMILTON, OHIO
From 23-MAY-11 18:29:00 to 23-MAY-11 18:30:00 (EST-5)
Location: (LUK)LUNKEN FLD CINC
Magnitude: 53.00 MG
Reported by: ASOS

Thunderstorm Wind in DARKE, OHIO
From 23-MAY-11 18:29:00 to 23-MAY-11 18:33:00 (EST-5)
Location: ARCANUM
Magnitude: 60.00 EG
Property damage: 40.00K
Crop damage: 0.00K
Reported by: Emergency Manager

One barn was destroyed and another barn sustained damage due to thunderstorm winds.  Power lines were also down due to the winds.

Thunderstorm Wind in PREBLE, OHIO
From 23-MAY-11 18:17:00 to 23-MAY-11 18:21:00 (EST-5)
Location: EATON
Magnitude: 50.00 EG
Property damage: 8.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A truck was overturned due to damaging thunderstorm winds.

Thunderstorm Wind in BUTLER, OHIO
From 23-MAY-11 18:35:00 to 23-MAY-11 18:39:00 (EST-5)
Location: MIDDLETOWN
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Public

A tree was down due to damaging thunderstorm winds.

Thunderstorm Wind in BUTLER, OHIO
From 23-MAY-11 18:20:00 to 23-MAY-11 18:21:00 (EST-5)
Location: HAMILTON ARPT
Magnitude: 50.00 MG
Reported by: ASOS

Thunderstorm Wind in BUTLER, OHIO
From 23-MAY-11 18:38:00 to 23-MAY-11 18:39:00 (EST-5)
Location: MAUD
Magnitude: 55.00 MG
Reported by: Amateur Radio

Thunderstorm Wind in HAMILTON, OHIO
From 23-MAY-11 18:15:00 to 23-MAY-11 18:19:00 (EST-5)
Location: BRENTWOOD
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Trees were reported down across a road due to damaging thunderstorm winds.

Thunderstorm Wind in MERCER, OHIO
From 23-MAY-11 18:08:00 to 23-MAY-11 18:12:00 (EST-5)
Location: COLDWATER
Magnitude: 50.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Five power poles were reported down due to damaging thunderstorm winds.

Thunderstorm Wind in SHELBY, OHIO
From 23-MAY-11 18:54:00 to 23-MAY-11 18:58:00 (EST-5)
Location: SIDNEY
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A tree was blown down due to damaging thunderstorm winds.

Thunderstorm Wind in MIAMI, OHIO
From 23-MAY-11 18:41:00 to 23-MAY-11 18:45:00 (EST-5)
Location: PLEASANT HILL
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Damage occurred to a dairy farm and trees were blown down due to damaging thunderstorm winds.

Thunderstorm Wind in GREENE, OHIO
From 23-MAY-11 18:54:00 to 23-MAY-11 18:58:00 (EST-5)
Location: XENIA
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A tree was reported down due to damaging thunderstorm winds.

Thunderstorm Wind in MONTGOMERY, OHIO
From 23-MAY-11 18:42:00 to 23-MAY-11 18:46:00 (EST-5)
Location: KETTERING
Magnitude: 55.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Several trees were blown down due to damaging thunderstorm winds.

Thunderstorm Wind in GREENE, OHIO
From 23-MAY-11 18:46:00 to 23-MAY-11 18:50:00 (EST-5)
Location: BEAVERCREEK
Magnitude: 60.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: NWS Employee

Part of the roof of a restaurant was blown off and multiple trees were snapped or uprooted due to damaging thunderstorm winds.  One tree fell onto a house and another tree fell onto power lines due to the winds.

Thunderstorm Wind in LOGAN, OHIO
From 23-MAY-11 19:04:00 to 23-MAY-11 19:08:00 (EST-5)
Location: QUINCY
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A tree was reported to be down due to damaging thunderstorm winds.

Thunderstorm Wind in LOGAN, OHIO
From 23-MAY-11 19:07:00 to 23-MAY-11 19:08:00 (EST-5)
Location: LEWISTOWN
Magnitude: 52.00 EG
Reported by: Trained Spotter

The spotter estimated the wind gust.

Thunderstorm Wind in SHELBY, OHIO
From 23-MAY-11 18:50:00 to 23-MAY-11 18:54:00 (EST-5)
Location: ANNA
Magnitude: 67.00 MG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: ASOS

A tree was uprooted and a roof was blown off of a barn due to damaging thunderstorm winds.

Thunderstorm Wind in GREENE, OHIO
From 23-MAY-11 18:56:00 to 23-MAY-11 19:00:00 (EST-5)
Location: FAIRBORN
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Public

Multiple trees were reported down due to damaging thunderstorm winds.

Thunderstorm Wind in CLARK, OHIO
From 23-MAY-11 18:56:00 to 23-MAY-11 19:00:00 (EST-5)
Location: ENON
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Multiple trees were reported down due to damaging thunderstorm winds.

Thunderstorm Wind in CLARK, OHIO
From 23-MAY-11 19:11:00 to 23-MAY-11 19:15:00 (EST-5)
Location: SPRINGFIELD
Magnitude: 60.00 EG
Property damage: 70.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Several utility poles were down, a barn was blown off of its foundation, and minor damage occurred to a house and an apartment due to damaging thunderstorm winds.

Thunderstorm Wind in MONTGOMERY, OHIO
From 23-MAY-11 18:37:00 to 23-MAY-11 18:41:00 (EST-5)
Location: ENGLEWOOD
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Numerous trees were blown down due to damaging thunderstorm winds.

Thunderstorm Wind in MONTGOMERY, OHIO
From 23-MAY-11 18:37:00 to 23-MAY-11 18:41:00 (EST-5)
Location: DAYTON
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A tree was down across a road due to damaging thunderstorm winds.

Thunderstorm Wind in MONTGOMERY, OHIO
From 23-MAY-11 19:02:00 to 23-MAY-11 19:06:00 (EST-5)
Location: DAYTON
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A large tree was uprooted due to damaging thunderstorm winds.

Thunderstorm Wind in CLERMONT, OHIO
From 23-MAY-11 18:38:00 to 23-MAY-11 18:42:00 (EST-5)
Location: AMELIA
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Several trees were blown down due to damaging thunderstorm winds.

Thunderstorm Wind in DARKE, OHIO
From 23-MAY-11 18:28:00 to 23-MAY-11 18:32:00 (EST-5)
Location: ARCANUM
Magnitude: 60.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A barn was significantly damaged with the roof removed and the metal roof of a house was blow off due to damaging thunderstorm winds.

Thunderstorm Wind in MIAMI, OHIO
From 23-MAY-11 19:02:00 to 23-MAY-11 19:06:00 (EST-5)
Location: PIQUA
Magnitude: 61.00 EG
Reported by: Amateur Radio

The wind gust was estimated by the observer.

Thunderstorm Wind in MIAMI, OHIO
From 23-MAY-11 18:46:00 to 23-MAY-11 18:50:00 (EST-5)
Location: TIPP CITY
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A tree fell onto a car due to damaging thunderstorm winds.

Thunderstorm Wind in CLARK, OHIO
From 23-MAY-11 18:58:00 to 23-MAY-11 19:02:00 (EST-5)
Location: NEW CARLISLE
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Roof damage was sustained to a chicken house due to damaging thunderstorm winds.

Thunderstorm Wind in CLINTON, OHIO
From 23-MAY-11 19:01:00 to 23-MAY-11 19:05:00 (EST-5)
Location: SABINA
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A roof was blown off of a barn and several trees were uprooted due to thunderstorm winds.

Thunderstorm Wind in CLINTON, OHIO
From 23-MAY-11 18:59:00 to 23-MAY-11 19:00:00 (EST-5)
Location: (ILN)WILMINGTON ARPK
Magnitude: 51.00 MG
Reported by: Official NWS Observations

Thunderstorm Wind in CLINTON, OHIO
From 23-MAY-11 19:03:00 to 23-MAY-11 19:04:00 (EST-5)
Location: (ILN)WILMINGTON ARPK
Magnitude: 50.00 MG
Reported by: ASOS

Thunderstorm Wind in CLINTON, OHIO
From 23-MAY-11 18:59:00 to 23-MAY-11 19:03:00 (EST-5)
Location: MARTINSVILLE
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A tree was reported down and damage occurred to a garage roof due to thunderstorm winds.

Thunderstorm Wind in MONTGOMERY, OHIO
From 23-MAY-11 18:38:00 to 23-MAY-11 18:42:00 (EST-5)
Location: FT MC KINLEY
Magnitude: 56.00 EG
Reported by: Trained Spotter

The wind gust was estimated by the spotter.

Thunderstorm Wind in MIAMI, OHIO
From 23-MAY-11 18:38:00 to 23-MAY-11 18:42:00 (EST-5)
Location: WEST MILTON
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Panels were ripped off of a barn due to damaging thunderstorm winds.

Thunderstorm Wind in ADAMS, OHIO
From 23-MAY-11 19:30:00 to 23-MAY-11 19:34:00 (EST-5)
Location: MANCHESTER
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Numerous trees were reported down due to damaging thunderstorm winds.