A strong mid level trough and resultant increased wind field interacted with a stationary boundary and moderate instability. A long lived squall line developed across Illinois and moved east into northern Indiana. Numerous reports of trees, tree limbs and power lines were blown down with winds more than 70 mph at times.

Thunderstorm Wind in LAGRANGE, INDIANA
From 18-JUN-10 17:20:00 to 18-JUN-10 17:21:00 (EST-5)
Location: LAGRANGE
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency management officials reported numerous trees and power lines down, along with a few power poles snapped.  A few trees were reported to have fallen on cars and houses, but no specific damage or details were provided.

Thunderstorm Wind in ALLEN, INDIANA
From 18-JUN-10 19:32:00 to 18-JUN-10 19:33:00 (EST-5)
Location: FT WAYNE
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Three to four trees snapped on N Allen County Line Road.

Thunderstorm Wind in ALLEN, INDIANA
From 18-JUN-10 19:35:00 to 18-JUN-10 19:36:00 (EST-5)
Location: FT WAYNE
Magnitude: 60.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A partial roof was blown off the auto auction at U.S. 33 and Washington Center Road.

Thunderstorm Wind in ALLEN, INDIANA
From 18-JUN-10 20:40:00 to 18-JUN-10 20:41:00 (EST-5)
Location: FT WAYNE
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Numerous trees and power lines down.  US 30 was closed due to power lines over the road at Business 30 and 300 W.

Thunderstorm Wind in WELLS, INDIANA
From 18-JUN-10 21:00:00 to 18-JUN-10 21:01:00 (EST-5)
Location: BLUFFTON
Magnitude: 55.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Newspaper

A large tree limb was reported down on Marion Street, just north of Central Avenue. The limb fell onto a power line, knocking out power to the area.

Thunderstorm Wind in WELLS, INDIANA
From 18-JUN-10 20:50:00 to 18-JUN-10 20:51:00 (EST-5)
Location: BLUFFTON
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

A local newspaper reported a tree was down and blocking the road on County Road 300 South, just east of Indiana 1.

Hail in LA PORTE, INDIANA
From 18-JUN-10 17:08:00 to 18-JUN-10 17:09:00 (CST-6)
Location: MICHIGAN CITY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

One inch hail was accompanied by measured 70-80 mph wind gusts. Trees downed.

Thunderstorm Wind in LA PORTE, INDIANA
From 18-JUN-10 17:18:00 to 18-JUN-10 17:19:00 (CST-6)
Location: HESSTON
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported several large tree limbs down.

Thunderstorm Wind in LA PORTE, INDIANA
From 18-JUN-10 17:20:00 to 18-JUN-10 17:21:00 (CST-6)
Location: LA PORTE
Magnitude: 78.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in LA PORTE, INDIANA
From 18-JUN-10 17:22:00 to 18-JUN-10 17:23:00 (CST-6)
Location: ROLLING PRAIRIE
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A roof was ripped off a house.

Thunderstorm Wind in STARKE, INDIANA
From 18-JUN-10 17:30:00 to 18-JUN-10 17:31:00 (CST-6)
Location: GROVERTOWN
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Multiple reports of trees down on houses and corn flattened.  A large tree was also blocking a roadway.

Thunderstorm Wind in STARKE, INDIANA
From 18-JUN-10 17:32:00 to 18-JUN-10 17:33:00 (CST-6)
Location: BREMS
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

A 59 mph gust was measured at Knox County AWOS.

Thunderstorm Wind in ST. JOSEPH, INDIANA
From 18-JUN-10 17:36:00 to 18-JUN-10 17:37:00 (EST-5)
Location: SOUTH BEND
Magnitude: 64.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

A 74 mph gust was measured by the South Bend Airport ASOS.

Thunderstorm Wind in ST. JOSEPH, INDIANA
From 18-JUN-10 17:40:00 to 18-JUN-10 17:41:00 (EST-5)
Location: SOUTH BEND
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter estimated 60 mph winds with trees down in the area.

Thunderstorm Wind in MARSHALL, INDIANA
From 18-JUN-10 17:41:00 to 18-JUN-10 17:42:00 (EST-5)
Location: CULVER
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency management officials reported trees and power lines reported down south of Culver.

Thunderstorm Wind in ST. JOSEPH, INDIANA
From 18-JUN-10 17:43:00 to 18-JUN-10 17:44:00 (EST-5)
Location: SOUTH BEND
Magnitude: 69.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in LA PORTE, INDIANA
From 18-JUN-10 17:49:00 to 18-JUN-10 17:50:00 (CST-6)
Location: HESSTON
Magnitude: 60.00 EG
Reported by: Trained Spotter

A trained spotter reported a tree fell onto a barn, causing an undetermined amount of damage.

Thunderstorm Wind in ST. JOSEPH, INDIANA
From 18-JUN-10 17:54:00 to 18-JUN-10 17:55:00 (EST-5)
Location: SOUTH BEND
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Numerous reports of trees down.

Thunderstorm Wind in PULASKI, INDIANA
From 18-JUN-10 17:57:00 to 18-JUN-10 17:58:00 (CST-6)
Location: MONTEREY
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter estimated 70 mph winds with nickel sized hail.

Thunderstorm Wind in MARSHALL, INDIANA
From 18-JUN-10 18:00:00 to 18-JUN-10 18:00:00 (EST-5)
Location: PLYMOUTH
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency manager reports trees and power lines down across the entire county.

Thunderstorm Wind in KOSCIUSKO, INDIANA
From 18-JUN-10 18:10:00 to 18-JUN-10 18:11:00 (EST-5)
Location: MILFORD
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported multiple trees and power lines were down.  At least one power pole was snapped.

Thunderstorm Wind in CASS, INDIANA
From 18-JUN-10 18:11:00 to 18-JUN-10 18:12:00 (EST-5)
Location: ROYAL CENTER
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Cass County EM reports an estimated wind gust of 60 mph.

Thunderstorm Wind in ELKHART, INDIANA
From 18-JUN-10 18:12:00 to 18-JUN-10 18:13:00 (EST-5)
Location: GOSHEN
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Peak wind gust of 52 knots measured at Goshen ASOS.

Thunderstorm Wind in ST. JOSEPH, INDIANA
From 18-JUN-10 18:12:00 to 18-JUN-10 18:13:00 (EST-5)
Location: MISHAWAKA
Magnitude: 59.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in ELKHART, INDIANA
From 18-JUN-10 18:18:00 to 18-JUN-10 18:19:00 (EST-5)
Location: GOSHEN
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Four inch tree limbs across the road at intersection of CR 22 and Middlesburg Road.

Thunderstorm Wind in ELKHART, INDIANA
From 18-JUN-10 18:22:00 to 18-JUN-10 18:23:00 (EST-5)
Location: NEW PARIS
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Tree fell on the road 1 mile north of US 6 on SR 15.

Thunderstorm Wind in NOBLE, INDIANA
From 18-JUN-10 18:23:00 to 18-JUN-10 18:24:00 (EST-5)
Location: LIGONIER
Magnitude: 60.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A roof was blown completely off of a diary barn in the NW corner of the county.  Power lines were also down.

Thunderstorm Wind in MIAMI, INDIANA
From 18-JUN-10 18:26:00 to 18-JUN-10 18:27:00 (EST-5)
Location: MEXICO
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency management officials reported tree limbs down.

Hail in KOSCIUSKO, INDIANA
From 18-JUN-10 18:27:00 to 18-JUN-10 18:28:00 (EST-5)
Location: OSWEGO
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

One inch hail with 55 to 60 mph wind gusts.

Thunderstorm Wind in MIAMI, INDIANA
From 18-JUN-10 18:35:00 to 18-JUN-10 18:36:00 (EST-5)
Location: PERU
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Trees down on power lines.

Thunderstorm Wind in NOBLE, INDIANA
From 18-JUN-10 18:37:00 to 18-JUN-10 18:38:00 (EST-5)
Location: ALBION
Magnitude: 65.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A commercial building on the north side of Courthouse Square sustained significant roof damage.

Thunderstorm Wind in ELKHART, INDIANA
From 18-JUN-10 18:45:00 to 18-JUN-10 18:46:00 (EST-5)
Location: GOSHEN
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Multiple trees down with one 12 inch diameter tree snapped.

Thunderstorm Wind in ST. JOSEPH, INDIANA
From 18-JUN-10 18:50:00 to 18-JUN-10 18:51:00 (EST-5)
Location: SOUTH BEND
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A roof was blown off a barn on Pine Road and numerous trees down.

Thunderstorm Wind in CASS, INDIANA
From 18-JUN-10 18:55:00 to 18-JUN-10 18:56:00 (EST-5)
Location: LOGANSPORT
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Trees downed throughout county with some flash flooding.  Trees fell down onto two houses and one car.

Thunderstorm Wind in HUNTINGTON, INDIANA
From 18-JUN-10 18:56:00 to 18-JUN-10 18:57:00 (EST-5)
Location: MT ETNA
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A tree on CR 400 S and 600 W fell down and trapped a 62 year old man who was trying to make it back to his vehicle after fishing in the reservoir.  He was pronounced dead shortly after arriving at Parkview Huntington Hospital.

Thunderstorm Wind in ELKHART, INDIANA
From 18-JUN-10 19:00:00 to 18-JUN-10 19:01:00 (EST-5)
Location: ELKHART
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A 24 inch diameter tree was down on 1700 block of S Main Street.

Thunderstorm Wind in GRANT, INDIANA
From 18-JUN-10 19:05:00 to 18-JUN-10 19:06:00 (EST-5)
Location: SWAYZEE
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trees and power lines down.

Thunderstorm Wind in MIAMI, INDIANA
From 18-JUN-10 19:05:00 to 18-JUN-10 19:06:00 (EST-5)
Location: NEAD
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A large tree was down at 250 S and 400 W.

Thunderstorm Wind in GRANT, INDIANA
From 18-JUN-10 19:11:00 to 18-JUN-10 19:12:00 (EST-5)
Location: SHADY HILLS
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in STEUBEN, INDIANA
From 18-JUN-10 19:12:00 to 18-JUN-10 19:13:00 (EST-5)
Location: HAMILTON
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in MIAMI, INDIANA
From 18-JUN-10 19:12:00 to 18-JUN-10 19:13:00 (EST-5)
Location: CHILI
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency management officials reported a tree was blown down onto power lines in the area.

Thunderstorm Wind in FULTON, INDIANA
From 18-JUN-10 19:13:00 to 18-JUN-10 19:14:00 (EST-5)
Location: KEWANNA
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Several vehicles damaged from fallen trees.

Thunderstorm Wind in MARSHALL, INDIANA
From 18-JUN-10 19:14:00 to 18-JUN-10 19:15:00 (EST-5)
Location: CULVER
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trees and power lines down.

Thunderstorm Wind in ALLEN, INDIANA
From 18-JUN-10 19:18:00 to 18-JUN-10 19:19:00 (EST-5)
Location: NEW HAVEN
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Thunderstorm Wind in NOBLE, INDIANA
From 18-JUN-10 19:19:00 to 18-JUN-10 19:20:00 (EST-5)
Location: ALBION
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Numerous reports of wind damage across the county with trees and power lines down.

Thunderstorm Wind in GRANT, INDIANA
From 18-JUN-10 19:21:00 to 18-JUN-10 19:22:00 (EST-5)
Location: MARION
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Numerous power lines down.

Thunderstorm Wind in GRANT, INDIANA
From 18-JUN-10 19:22:00 to 18-JUN-10 19:23:00 (EST-5)
Location: SHADY HILLS
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in LA PORTE, INDIANA
From 18-JUN-10 17:11:00 to 18-JUN-10 17:12:00 (CST-6)
Location: LA PORTE
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in WHITLEY, INDIANA
From 18-JUN-10 19:40:00 to 18-JUN-10 19:41:00 (EST-5)
Location: COLUMBIA CITY
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency management officials reported several construction trailers were overturned at hospital construction site near the intersection of US 30 and 205.

Thunderstorm Wind in ST. JOSEPH, INDIANA
From 18-JUN-10 17:42:00 to 18-JUN-10 17:43:00 (EST-5)
Location: SOUTH BEND
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter estimated 70 mph wind gusts with several tree limbs down.

Thunderstorm Wind in ST. JOSEPH, INDIANA
From 18-JUN-10 18:34:00 to 18-JUN-10 18:35:00 (EST-5)
Location: SOUTH BEND
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trees down on Notre Dame Avenue with widespread power outages in South Bend.