Weak shortwave trough moving through upper Michigan combined with retreating outflow boundary from morning/early afternoon storms, which moved through northern Indiana/northwest Ohio, spurned new storm development from southern Wisconsin southeast through northeast Illinois by later afternoon. Storms were initially sub-severe and disorganized, but two main bowing segments, one along and north of the Interstate 80/90 corridor and another along the US-30 corridor, developed as cold pool strengthened, causing widespread damaging winds and flooding.

Flash Flood in LA PORTE, INDIANA
From 18-JUL-15 15:45:00 to 18-JUL-15 19:15:00 (CST-6)
Location: LA PORTE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Deep ponding on roadways. Parking lot flooded. Heavy rainfall, with 0.75 inches of rain in 15 minutes.

Flash Flood in MARSHALL, INDIANA
From 18-JUL-15 18:40:00 to 19-JUL-15 22:15:00 (EST-5)
Location: PLYMOUTH
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Extensive road flooding in Plymouth. 2.47 inches of rain in the past one and a half hours.

Flood in KOSCIUSKO, INDIANA
From 18-JUL-15 19:03:00 to 18-JUL-15 22:15:00 (EST-5)
Location: OSWEGO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Reports of water on several roadways around Barbee Lake area. Some roads nearly impassable.

Thunderstorm Wind in LA PORTE, INDIANA
From 18-JUL-15 15:44:00 to 18-JUL-15 15:47:00 (CST-6)
Location: WATERFORD
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Tree down on North Wozniak Road, just south of County Road 400 North.

Thunderstorm Wind in LA PORTE, INDIANA
From 18-JUL-15 15:50:00 to 18-JUL-15 15:53:00 (CST-6)
Location: MICHIGAN CITY
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Trees and power lines down in Michigan City.

Thunderstorm Wind in ST. JOSEPH, INDIANA
From 18-JUL-15 17:43:00 to 18-JUL-15 17:46:00 (EST-5)
Location: GILMER PARK
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Large tree down on power line at the intersection of Ireland Road and Magnolia Road.

Thunderstorm Wind in ELKHART, INDIANA
From 18-JUL-15 17:55:00 to 18-JUL-15 17:58:00 (EST-5)
Location: JAMESTOWN
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Tree damage reported with power outage.

Thunderstorm Wind in ELKHART, INDIANA
From 18-JUL-15 17:58:00 to 18-JUL-15 18:01:00 (EST-5)
Location: ELKHART
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Eighteen inch diameter tree down at the intersection of Bristol Street and Osolo Road.

Thunderstorm Wind in ST. JOSEPH, INDIANA
From 18-JUL-15 18:04:00 to 18-JUL-15 18:07:00 (EST-5)
Location: GLENWOOD
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Trees down, with estimated 60 mph winds.

Thunderstorm Wind in ELKHART, INDIANA
From 18-JUL-15 18:15:00 to 18-JUL-15 18:18:00 (EST-5)
Location: BRISTOL
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Four animal shelters destroyed and several limbs down.

Thunderstorm Wind in BLACKFORD, INDIANA
From 18-JUL-15 18:40:00 to 18-JUL-15 18:43:00 (EST-5)
Location: HARTFORD CITY
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Several trees and power lines down in town.

Thunderstorm Wind in ELKHART, INDIANA
From 18-JUL-15 18:35:00 to 18-JUL-15 18:38:00 (EST-5)
Location: ELKHART MIDWAY ARPT
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Large tree limbs down.

Thunderstorm Wind in BLACKFORD, INDIANA
From 18-JUL-15 19:05:00 to 18-JUL-15 19:08:00 (EST-5)
Location: HARTFORD CITY
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Tree blocking State Road 3 in Hartford City.

Thunderstorm Wind in HUNTINGTON, INDIANA
From 18-JUL-15 19:06:00 to 18-JUL-15 19:09:00 (EST-5)
Location: ROANOKE
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Tree down onto roadway.

Thunderstorm Wind in ALLEN, INDIANA
From 18-JUL-15 19:30:00 to 18-JUL-15 19:33:00 (EST-5)
Location: PRAIRIE SWITCH
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Trees down on Liberty Mills Road.

Thunderstorm Wind in ELKHART, INDIANA
From 18-JUL-15 17:50:00 to 18-JUL-15 17:53:00 (EST-5)
Location: ELKHART
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Tree limbs and power lines downed.

Thunderstorm Wind in LA PORTE, INDIANA
From 18-JUL-15 15:50:00 to 18-JUL-15 15:53:00 (CST-6)
Location: MICHIGAN CITY MUNI
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Tree limbs down, with winds estimated at 65 mph on Interstate 94.

Thunderstorm Wind in MARSHALL, INDIANA
From 18-JUL-15 18:21:00 to 18-JUL-15 18:24:00 (EST-5)
Location: PLYMOUTH MUNI ARPT
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Trees uprooted into a house just north of Plymouth. Time estimated from radar.