A potent upper level disturbance interacted with a very warm and moist air mass on Wednesday afternoon and evening, leading to the development of severe thunderstorms. Widespread large hail and damaging winds occurred.

Hail in LAKE, INDIANA
From 12-JUN-13 17:45:00 to 12-JUN-13 17:48:00 (CST-6)
Location: DYER
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Hail in LAKE, INDIANA
From 12-JUN-13 17:53:00 to 12-JUN-13 17:55:00 (CST-6)
Location: GRIFFITH
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in LAKE, INDIANA
From 12-JUN-13 17:45:00 to 12-JUN-13 17:45:00 (CST-6)
Location: GRIFFITH
Magnitude: 70.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Flood in LAKE, INDIANA
From 12-JUN-13 18:25:00 to 12-JUN-13 20:00:00 (CST-6)
Location: TRIANGLE ARPT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

The viaduct at routes 41 and 30 had two feet of standing water.

Thunderstorm Wind in LAKE, INDIANA
From 12-JUN-13 18:32:00 to 12-JUN-13 18:32:00 (CST-6)
Location: CROWN PT
Magnitude: 75.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A roof was blown off of a house.

Thunderstorm Wind in LAKE, INDIANA
From 12-JUN-13 19:19:00 to 12-JUN-13 19:19:00 (CST-6)
Location: DINWIDDIE
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Power lines were blown down near Interstate 65 and Route 2.

Thunderstorm Wind in LAKE, INDIANA
From 12-JUN-13 19:22:00 to 12-JUN-13 19:22:00 (CST-6)
Location: LOWELL
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in NEWTON, INDIANA
From 12-JUN-13 19:30:00 to 12-JUN-13 19:30:00 (CST-6)
Location: MT AYR
Magnitude: 60.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Branches up to 8 inches in diameter were blown down.

Thunderstorm Wind in BENTON, INDIANA
From 12-JUN-13 21:30:00 to 12-JUN-13 21:30:00 (EST-5)
Location: FOWLER
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

The siding on a home was damaged by strong winds.

Thunderstorm Wind in LAKE, INDIANA
From 12-JUN-13 19:20:00 to 12-JUN-13 19:20:00 (CST-6)
Location: RANGE LINE
Magnitude: 87.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Multiple high tension wires were blown down.  Roofs were blown off of barns.  A small garage was destroyed.  There was significant damage to two metal silos.  Trees were blown down and blocking roads.  Winds were estimated between 90 and 100 mph.

Thunderstorm Wind in LAKE, INDIANA
From 12-JUN-13 17:55:00 to 12-JUN-13 17:55:00 (CST-6)
Location: WINFIELD
Magnitude: 87.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Multiple trees were uprooted or snapped at the base.  Large branches were blown down across a wide area around Winfield and Lakes of the Four Seasons. Winds were estimated around 90 to 100 mph.

Thunderstorm Wind in LAKE, INDIANA
From 12-JUN-13 17:53:00 to 12-JUN-13 17:55:00 (CST-6)
Location: CROWN PT
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Large tree branches were blown down.