A strong low pressure system west of the Ohio Valley approached during peak heating on May 25th. This resulted in the development of widespread severe thunderstorms with large hail and damaging winds during the afternoon and evening hours. Later in the evening, a quasi-linear convective system swept west to east across the area. The result was straight line wind damage and a few tornadoes.

Hail in BUTLER, OHIO
From 25-MAY-11 17:35:00 to 25-MAY-11 17:39:00 (EST-5)
Location: OXFORD
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in MONTGOMERY, OHIO
From 25-MAY-11 18:19:00 to 25-MAY-11 18:23:00 (EST-5)
Location: KETTERING
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in BUTLER, OHIO
From 25-MAY-11 17:49:00 to 25-MAY-11 17:53:00 (EST-5)
Location: MIDDLETOWN
Magnitude: 1.75 
Reported by: Public

Hail in MONTGOMERY, OHIO
From 25-MAY-11 18:04:00 to 25-MAY-11 18:10:00 (EST-5)
Location: CARLISLE
Magnitude: 2.50 
Reported by: NWS Employee

Thunderstorm Wind in MIAMI, OHIO
From 25-MAY-11 19:55:00 to 25-MAY-11 19:59:00 (EST-5)
Location: TIPP CITY
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A tree was reported down due to damaging thunderstorm winds.

Hail in MONTGOMERY, OHIO
From 25-MAY-11 19:47:00 to 25-MAY-11 19:51:00 (EST-5)
Location: VANDALIA
Magnitude: 1.00 
Reported by: Public

Hail in CHAMPAIGN, OHIO
From 25-MAY-11 20:30:00 to 25-MAY-11 20:34:00 (EST-5)
Location: URBANA
Magnitude: 0.75 
Reported by: Public

Hail in DARKE, OHIO
From 25-MAY-11 20:19:00 to 25-MAY-11 20:23:00 (EST-5)
Location: NEW MADISON
Magnitude: 1.25 
Reported by: Trained Spotter

Thunderstorm Wind in DARKE, OHIO
From 25-MAY-11 20:34:00 to 25-MAY-11 20:38:00 (EST-5)
Location: FT JEFFERSON
Magnitude: 61.00 EG
Reported by: Trained Spotter

The spotter estimated the wind gust.

Hail in DARKE, OHIO
From 25-MAY-11 20:30:00 to 25-MAY-11 20:38:00 (EST-5)
Location: GREENVILLE
Magnitude: 1.75 
Reported by: Trained Spotter

Hail in DARKE, OHIO
From 25-MAY-11 20:35:00 to 25-MAY-11 20:39:00 (EST-5)
Location: GREENVILLE
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in DARKE, OHIO
From 25-MAY-11 20:47:00 to 25-MAY-11 20:57:00 (EST-5)
Location: GETTYSBURG
Magnitude: 1.50 
Reported by: Trained Spotter

Hail in UNION, OHIO
From 25-MAY-11 20:57:00 to 25-MAY-11 21:01:00 (EST-5)
Location: MARYSVILLE
Magnitude: 1.00 
Reported by: Public

Hail in MIAMI, OHIO
From 25-MAY-11 20:57:00 to 25-MAY-11 21:01:00 (EST-5)
Location: COVINGTON
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in SHELBY, OHIO
From 25-MAY-11 20:59:00 to 25-MAY-11 21:03:00 (EST-5)
Location: FT LORAMIE
Magnitude: 0.75 
Reported by: Amateur Radio

Hail in UNION, OHIO
From 25-MAY-11 21:12:00 to 25-MAY-11 21:16:00 (EST-5)
Location: MARYSVILLE
Magnitude: 1.75 
Reported by: Trained Spotter

Hail in DELAWARE, OHIO
From 25-MAY-11 21:15:00 to 25-MAY-11 21:23:00 (EST-5)
Location: OSTRANDER
Magnitude: 1.00 
Reported by: Trained Spotter

Thunderstorm Wind in UNION, OHIO
From 25-MAY-11 21:05:00 to 25-MAY-11 21:06:00 (EST-5)
Location: PLAIN CITY
Magnitude: 53.00 MG
Reported by: Trained Spotter

Hail in PREBLE, OHIO
From 25-MAY-11 22:07:00 to 25-MAY-11 22:09:00 (EST-5)
Location: WEST MANCHESTER
Magnitude: 0.75 
Reported by: Trained Spotter

Hail in DARKE, OHIO
From 25-MAY-11 22:09:00 to 25-MAY-11 22:13:00 (EST-5)
Location: GREENVILLE
Magnitude: 1.75 
Reported by: Law Enforcement

Thunderstorm Wind in MADISON, OHIO
From 25-MAY-11 22:09:00 to 25-MAY-11 22:10:00 (EST-5)
Location: WEST JEFFERSON
Magnitude: 52.00 MG
Reported by: Trained Spotter

Thunderstorm Wind in MIAMI, OHIO
From 25-MAY-11 22:29:00 to 25-MAY-11 22:33:00 (EST-5)
Location: COVINGTON
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees and power lines were reported down due to damaging thunderstorm winds.

Hail in GREENE, OHIO
From 25-MAY-11 18:47:00 to 25-MAY-11 18:51:00 (EST-5)
Location: CEDARVILLE
Magnitude: 1.75 
Reported by: Public

Hail in GREENE, OHIO
From 25-MAY-11 18:33:00 to 25-MAY-11 18:37:00 (EST-5)
Location: XENIA
Magnitude: 0.75 
Reported by: Public

Hail in PREBLE, OHIO
From 25-MAY-11 19:15:00 to 25-MAY-11 19:25:00 (EST-5)
Location: EATON
Magnitude: 1.75 
Reported by: Trained Spotter

Hail in MONTGOMERY, OHIO
From 25-MAY-11 19:24:00 to 25-MAY-11 19:28:00 (EST-5)
Location: NEW LEBANON
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in MONTGOMERY, OHIO
From 25-MAY-11 19:39:00 to 25-MAY-11 19:45:00 (EST-5)
Location: ENGLEWOOD
Magnitude: 1.75 
Reported by: Trained Spotter

Thunderstorm Wind in HAMILTON, OHIO
From 25-MAY-11 23:32:00 to 25-MAY-11 23:36:00 (EST-5)
Location: (LUK)LUNKEN FLD CINC
Magnitude: 53.00 MG
Reported by: ASOS

Hail in DARKE, OHIO
From 25-MAY-11 23:26:00 to 25-MAY-11 23:30:00 (EST-5)
Location: ARCANUM
Magnitude: 0.88 
Reported by: Trained Spotter

Hail in MERCER, OHIO
From 25-MAY-11 23:38:00 to 25-MAY-11 23:42:00 (EST-5)
Location: COLDWATER
Magnitude: 0.88 
Reported by: Public

Hail in MONTGOMERY, OHIO
From 25-MAY-11 23:51:00 to 25-MAY-11 23:54:00 (EST-5)
Location: VANDALIA
Magnitude: 0.75 
Reported by: Trained Spotter

Thunderstorm Wind in CLINTON, OHIO
From 26-MAY-11 00:01:00 to 26-MAY-11 00:02:00 (EST-5)
Location: (ILN)WILMINGTON ARPK
Magnitude: 53.00 MG
Reported by: Official NWS Observations

Hail in CHAMPAIGN, OHIO
From 26-MAY-11 00:29:00 to 26-MAY-11 00:33:00 (EST-5)
Location: URBANA
Magnitude: 0.75 
Reported by: Public

Thunderstorm Wind in MADISON, OHIO
From 26-MAY-11 00:29:00 to 26-MAY-11 00:33:00 (EST-5)
Location: LONDON
Magnitude: 52.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Public

There was damage to a barn and a roof removed from a garage due to damaging thunderstorm winds.

Thunderstorm Wind in FAYETTE, OHIO
From 26-MAY-11 00:15:00 to 26-MAY-11 00:19:00 (EST-5)
Location: JEFFERSONVILLE
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Large trees were down due to damaging thunderstorm winds.

Thunderstorm Wind in FAYETTE, OHIO
From 26-MAY-11 00:24:00 to 26-MAY-11 00:28:00 (EST-5)
Location: WASHINGTON COURT HOU
Magnitude: 60.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A barn was destroyed due to damaging thunderstorm winds.

Thunderstorm Wind in MADISON, OHIO
From 26-MAY-11 00:25:00 to 26-MAY-11 00:29:00 (EST-5)
Location: MIDWAY
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Public

Two pine trees were snapped along with numerous limbs down due to damaging thunderstorm winds.

Hail in UNION, OHIO
From 26-MAY-11 00:47:00 to 26-MAY-11 00:51:00 (EST-5)
Location: MARYSVILLE
Magnitude: 0.88 
Reported by: Public

Thunderstorm Wind in FRANKLIN, OHIO
From 26-MAY-11 01:05:00 to 26-MAY-11 01:06:00 (EST-5)
Location: WHITEHALL
Magnitude: 52.00 MG
Reported by: Trained Spotter

Tornado in HARDIN, OHIO
From 25-MAY-11 17:14:00 to 25-MAY-11 17:15:00 (EST-5)
Location: DUNKIRK
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A tornado briefly touched down in a field.  No damage occurred with the tornado.

Thunderstorm Wind in HARDIN, OHIO
From 25-MAY-11 17:14:00 to 25-MAY-11 17:18:00 (EST-5)
Location: ADA
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees and power lines were reported down due to damaging thunderstorm winds.

Hail in PREBLE, OHIO
From 25-MAY-11 17:32:00 to 25-MAY-11 17:36:00 (EST-5)
Location: CAMDEN
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in MONTGOMERY, OHIO
From 25-MAY-11 18:00:00 to 25-MAY-11 18:04:00 (EST-5)
Location: DAYTON
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in MONTGOMERY, OHIO
From 25-MAY-11 18:14:00 to 25-MAY-11 18:25:00 (EST-5)
Location: CENTERVILLE
Magnitude: 2.00 
Reported by: Trained Spotter

Hail in GREENE, OHIO
From 25-MAY-11 18:29:00 to 25-MAY-11 18:30:00 (EST-5)
Location: SPRING VLY
Magnitude: 1.75 
Reported by: Trained Spotter

Tornado in FAYETTE, OHIO
From 26-MAY-11 00:25:00 to 26-MAY-11 00:26:00 (EST-5)
Location: BLOOMINGBURG
Tornado F-scale: EF0
Property damage: 35.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A National Weather Service storm survey confirmed that a tornado touched down three miles west of Bloomingburg. Near the beginning of the path one barn was damaged and another barn was destroyed.  Further along the path another barn was damaged due to the tornado.  The estimated maximum wind speed based on damage was eighty miles per hour.

Hail in GREENE, OHIO
From 25-MAY-11 18:33:00 to 25-MAY-11 18:34:00 (EST-5)
Location: XENIA
Magnitude: 2.00 
Reported by: Trained Spotter

Thunderstorm Wind in CLARK, OHIO
From 25-MAY-11 19:20:00 to 25-MAY-11 19:24:00 (EST-5)
Location: SELMA
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A tree was reported down on a house due to thunderstorm winds.

Hail in GREENE, OHIO
From 25-MAY-11 18:28:00 to 25-MAY-11 18:32:00 (EST-5)
Location: BEAVERCREEK
Magnitude: 1.00 
Reported by: Trained Spotter

Thunderstorm Wind in DELAWARE, OHIO
From 26-MAY-11 01:07:00 to 26-MAY-11 01:08:00 (EST-5)
Location: RADNOR
Magnitude: 56.00 MG
Reported by: Amateur Radio

Thunderstorm Wind in AUGLAIZE, OHIO
From 25-MAY-11 23:54:00 to 25-MAY-11 23:58:00 (EST-5)
Location: ST MARYS
Magnitude: 52.00 EG
Reported by: Trained Spotter

The spotter estimated the wind gust.

Thunderstorm Wind in MADISON, OHIO
From 26-MAY-11 00:43:00 to 26-MAY-11 00:48:00 (EST-5)
Location: MT STERLING
Magnitude: 56.00 EG
Reported by: Trained Spotter

The spotter estimated the wind gust.

Thunderstorm Wind in MIAMI, OHIO
From 25-MAY-11 19:45:00 to 25-MAY-11 19:49:00 (EST-5)
Location: WEST MILTON
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A large tree limb was reported down due to a thunderstorm wind gust.

Thunderstorm Wind in BUTLER, OHIO
From 25-MAY-11 23:15:00 to 25-MAY-11 23:19:00 (EST-5)
Location: PISGAH
Magnitude: 65.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Several large trees were reported down along with several power poles due to damaging thunderstorm winds.

Thunderstorm Wind in BUTLER, OHIO
From 25-MAY-11 23:20:00 to 25-MAY-11 23:24:00 (EST-5)
Location: FAIRFIELD
Magnitude: 70.00 EG
Property damage: 70.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Numerous trees were uprooted, several chimneys were damaged, several buildings had siding torn and shingles blown off, a carport collapsed, a power pole was snapped, and twenty cars at a car dealership sustained minor damage due to thunderstorm winds.  In addition, the roofs of two businesses were damaged due to the winds.

Tornado in BUTLER, OHIO
From 25-MAY-11 23:30:00 to 25-MAY-11 23:33:00 (EST-5)
Location: HUGHES
Tornado F-scale: EF1
Property damage: 175.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A National Weather Service storm survey confirmed a tornado near Liberty Township. This tornado lifted an entire roof off of a two story home and the exterior walls collapsed.  Significant roof damage occurred to three other residences nearby as well.  Multiple vehicles sustained damage in the path of the tornado.  Numerous trees were snapped, power poles were snapped, and several homes had minor roof and siding damage due to the tornado.  The maximum estimated wind speed based on damage was around one-hundred and five miles per hour.

Tornado in FAYETTE, OHIO
From 26-MAY-11 00:26:00 to 26-MAY-11 00:27:00 (EST-5)
Location: YATESVILLE
Tornado F-scale: EF0
Property damage: 50.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A National Weather Service storm survey confirmed a tornado about five miles north of Bloomingburg.  The tornado damaged the flat metal roof of a small barn and a large section of roof from another barn.  A large tree in the path of the tornado was also down.  The maximum estimated wind speed based on damage was eighty-five miles per hour.

Thunderstorm Wind in BUTLER, OHIO
From 25-MAY-11 23:22:00 to 25-MAY-11 23:30:00 (EST-5)
Location: TRENTON
Magnitude: 60.00 EG
Property damage: 32.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Seven homes were damaged due to thunderstorm winds.  In addition, one vehicle was overturned and two trees were snapped due to the winds.

Thunderstorm Wind in BUTLER, OHIO
From 25-MAY-11 23:24:00 to 25-MAY-11 23:28:00 (EST-5)
Location: TYLERVILLE
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Several trees were reported down due to damaging thunderstorm winds. Some of these trees fell on homes resulting in minor damage.

Tornado in MONTGOMERY, OHIO
From 25-MAY-11 18:10:00 to 25-MAY-11 18:11:00 (EST-5)
Location: OAK RIDGE
Tornado F-scale: EF0
Property damage: 5.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A National Weather Service storm survey confirmed a tornado near Centerville.  The tornado touched down briefly on the grounds of a hospital. A small path of trees was blown down in an area just north of the hospital. Some of the trees were uprooted, snapped off, or twisted. Maximum estimated wind speed based on damage was around sixty-five miles per hour.

Hail in GREENE, OHIO
From 25-MAY-11 18:28:00 to 25-MAY-11 18:34:00 (EST-5)
Location: XENIA
Magnitude: 2.75 
Reported by: NWS Employee

Thunderstorm Wind in BUTLER, OHIO
From 25-MAY-11 23:40:00 to 25-MAY-11 23:44:00 (EST-5)
Location: TYLERVILLE
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

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

Hail in HAMILTON, OHIO
From 25-MAY-11 23:45:00 to 25-MAY-11 23:49:00 (EST-5)
Location: (LUK)LUNKEN FLD CINC
Magnitude: 1.00 
Reported by: Public

Thunderstorm Wind in CLINTON, OHIO
From 25-MAY-11 23:53:00 to 25-MAY-11 23:57:00 (EST-5)
Location: KINGMAN
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trees and power poles were reported down due to damaging thunderstorm winds.

Hail in DARKE, OHIO
From 25-MAY-11 20:50:00 to 25-MAY-11 20:59:00 (EST-5)
Location: BRADFORD
Magnitude: 0.88 
Reported by: Trained Spotter

Thunderstorm Wind in SHELBY, OHIO
From 25-MAY-11 21:17:00 to 25-MAY-11 21:23:00 (EST-5)
Location: SIDNEY ARPT
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees were reported down due to damaging thunderstorm winds.

Hail in PREBLE, OHIO
From 25-MAY-11 17:10:00 to 25-MAY-11 17:14:00 (EST-5)
Location: COLLEGE CORNER
Magnitude: 1.75 
Reported by: Trained Spotter

Thunderstorm Wind in GREENE, OHIO
From 26-MAY-11 00:10:00 to 26-MAY-11 00:14:00 (EST-5)
Location: BOWERSVILLE
Magnitude: 50.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Multiple telephone poles were snapped, many trees were down, and a barn suffered excessive roof damage due to damaging thunderstorm winds.

Hail in GREENE, OHIO
From 25-MAY-11 18:17:00 to 25-MAY-11 18:32:00 (EST-5)
Location: BELLBROOK
Magnitude: 2.00 
Reported by: Trained Spotter

Thunderstorm Wind in DELAWARE, OHIO
From 26-MAY-11 01:13:00 to 26-MAY-11 01:14:00 (EST-5)
Location: DELAWARE
Magnitude: 59.00 MG
Reported by: Amateur Radio

Thunderstorm Wind in DARKE, OHIO
From 25-MAY-11 23:37:00 to 25-MAY-11 23:38:00 (EST-5)
Location: VERSAILES DRK CO ARP
Magnitude: 53.00 MG
Reported by: AWOS

Thunderstorm Wind in SHELBY, OHIO
From 25-MAY-11 21:00:00 to 25-MAY-11 21:01:00 (EST-5)
Location: JACKSON CENTER
Magnitude: 51.00 MG
Reported by: Amateur Radio

Hail in MERCER, OHIO
From 25-MAY-11 16:24:00 to 25-MAY-11 16:28:00 (EST-5)
Location: MENDON
Magnitude: 0.75 
Reported by: County Official

Hail in MONTGOMERY, OHIO
From 25-MAY-11 18:11:00 to 25-MAY-11 18:18:00 (EST-5)
Location: MIAMISBURG
Magnitude: 3.00 
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Two individuals, one child and one adult, were injured by large hail while running for cover. A truck also sustained damage due to the hail.

Hail in UNION, OHIO
From 25-MAY-11 21:07:00 to 25-MAY-11 21:11:00 (EST-5)
Location: PLAIN CITY
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in DARKE, OHIO
From 25-MAY-11 18:52:00 to 25-MAY-11 18:59:00 (EST-5)
Location: NEW MADISON
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in MONTGOMERY, OHIO
From 25-MAY-11 19:34:00 to 25-MAY-11 19:44:00 (EST-5)
Location: BROOKVILLE
Magnitude: 1.75 
Reported by: Trained Spotter

Thunderstorm Wind in CLERMONT, OHIO
From 25-MAY-11 23:34:00 to 25-MAY-11 23:38:00 (EST-5)
Location: BATAVIA
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 CLINTON, OHIO
From 25-MAY-11 23:55:00 to 26-MAY-11 00:01:00 (EST-5)
Location: GURNEYVILLE
Magnitude: 60.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Two barns were damaged and numerous trees were down due to thunderstorm winds.