Thunderstorms developed ahead of a cold front during the afternoon and evening of August 13. As these storms moved across central Indiana, they brought damaging winds and large hail to the area. The storms also caused part of a stage to collapse at the Indiana State Fair, resulting in fatalities.

Hail in TIPPECANOE, INDIANA
From 13-AUG-11 18:12:00 to 13-AUG-11 18:14:00 (EST-5)
Location: KLONDYKE
Magnitude: 1.00 
Reported by: Amateur Radio

Hail in TIPPECANOE, INDIANA
From 13-AUG-11 18:14:00 to 13-AUG-11 18:16:00 (EST-5)
Location: KLONDYKE
Magnitude: 1.00 
Reported by: Amateur Radio

Hail in TIPPECANOE, INDIANA
From 13-AUG-11 18:20:00 to 13-AUG-11 18:22:00 (EST-5)
Location: MONTMORENCIE
Magnitude: 0.75 
Reported by: Trained Spotter

Hail in TIPPECANOE, INDIANA
From 13-AUG-11 18:25:00 to 13-AUG-11 18:27:00 (EST-5)
Location: WEST LAFAYETTE
Magnitude: 0.75 
Reported by: Amateur Radio

Hail in TIPPECANOE, INDIANA
From 13-AUG-11 18:37:00 to 13-AUG-11 18:39:00 (EST-5)
Location: DAYTON
Magnitude: 1.75 
Reported by: Emergency Manager

Thunderstorm Wind in TIPPECANOE, INDIANA
From 13-AUG-11 19:15:00 to 13-AUG-11 19:15:00 (EST-5)
Location: CLARKS HILL
Magnitude: 52.00 EG
Reported by: Broadcast Media

An estimated 60 mph thunderstorm wind gust was observed in this location.

Thunderstorm Wind in TIPPECANOE, INDIANA
From 13-AUG-11 18:28:00 to 13-AUG-11 18:28:00 (EST-5)
Location: BATTLE GROUND
Magnitude: 56.00 EG
Property damage: 5.00K
Reported by: Emergency Manager

Trees were reported down in this location due to damaging thunderstorm wind gusts.

Thunderstorm Wind in TIPPECANOE, INDIANA
From 13-AUG-11 18:29:00 to 13-AUG-11 18:29:00 (EST-5)
Location: LAFAYETTE
Magnitude: 51.00 MG
Reported by: ASOS

A measured 59 mph thunderstorm wind gust was observed in this location.

Thunderstorm Wind in TIPPECANOE, INDIANA
From 13-AUG-11 18:30:00 to 13-AUG-11 18:30:00 (EST-5)
Location: WEST LAFAYETTE
Magnitude: 52.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Multiple trees, three to four inches in diameter, were downed in this location due to damaging thunderstorm wind gusts.

Hail in TIPPECANOE, INDIANA
From 13-AUG-11 18:30:00 to 13-AUG-11 18:32:00 (EST-5)
Location: LAFAYETTE
Magnitude: 1.00 
Reported by: Emergency Manager

Thunderstorm Wind in TIPPECANOE, INDIANA
From 13-AUG-11 18:31:00 to 13-AUG-11 18:31:00 (EST-5)
Location: BATTLE GROUND
Magnitude: 52.00 EG
Property damage: 5.00K
Reported by: Trained Spotter

An estimated 60 mph thunderstorm wind gust downed several trees in this location. Pea-sized hail was also observed.

Hail in VERMILLION, INDIANA
From 13-AUG-11 18:50:00 to 13-AUG-11 18:52:00 (EST-5)
Location: KLONDYKE
Magnitude: 0.75 
Reported by: Amateur Radio

Penny-sized hail and 45 mph winds were observed near State Route 63 and State Route 163.

Thunderstorm Wind in MARION, INDIANA
From 13-AUG-11 19:45:00 to 13-AUG-11 19:45:00 (EST-5)
Location: IND SHANK ARPT
Magnitude: 56.00 EG
Property damage: 7.00K
Reported by: Public

Multiple trees and tree limbs were reported down in a small, confined area due to damaging thunderstorm wind gusts.

Thunderstorm Wind in MARION, INDIANA
From 13-AUG-11 19:49:00 to 13-AUG-11 19:49:00 (EST-5)
Location: SPEEDWAY
Magnitude: 61.00 MG
Property damage: 1.50K
Crop damage: 0.00K
Reported by: Public

A long-time television weather spotter reported a large 100-year-old tree that had been blown over by thunderstorm wind gusts measured at 70 mph. Power was out in the neighborhood.

Thunderstorm Wind in HENDRICKS, INDIANA
From 13-AUG-11 19:50:00 to 13-AUG-11 19:50:00 (EST-5)
Location: PLAINFIELD
Magnitude: 67.00 MG
Crop damage: 0.00K
Reported by: Amateur Radio

A measured 77 mph thunderstorm wind gust was observed at Highway 40 and Center Street.

Thunderstorm Wind in HANCOCK, INDIANA
From 13-AUG-11 20:16:00 to 13-AUG-11 20:16:00 (EST-5)
Location: FORTVILLE
Magnitude: 52.00 EG
Reported by: Trained Spotter

An estimated 60 mph thunderstorm wind gust was observed in this location.

Hail in MADISON, INDIANA
From 13-AUG-11 20:13:00 to 13-AUG-11 20:15:00 (EST-5)
Location: HUNTSVILLE
Magnitude: 1.50 
Reported by: Public

A funnel cloud was observed with the hail.

Thunderstorm Wind in DELAWARE, INDIANA
From 13-AUG-11 20:25:00 to 13-AUG-11 20:25:00 (EST-5)
Location: MAYFIELD
Magnitude: 56.00 EG
Property damage: 0.10K
Crop damage: 0.00K
Reported by: Public

An estimated 65 mph thunderstorm wind gust was observed in this location. Some small branches were downed and power flashes were seen in the distance.

Thunderstorm Wind in HENRY, INDIANA
From 13-AUG-11 20:45:00 to 13-AUG-11 20:45:00 (EST-5)
Location: NEW CASTLE
Magnitude: 43.00 EG
Property damage: 0.10K
Crop damage: 0.00K
Reported by: Amateur Radio

An estimated thunderstorm wind gusts of 50 mph downed a 4-inch diameter tree limb.

Flood in DELAWARE, INDIANA
From 13-AUG-11 20:50:00 to 13-AUG-11 22:00:00 (EST-5)
Location: MAYFIELD
Flood cause: Heavy Rain
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Amateur Radio

A large stretch of 29th Street was flooded between approximately Madison and Memorial Streets. Rainfall between 9:15 and 10:00 PM EDT measured 0.98 inches.

Hail in MONROE, INDIANA
From 13-AUG-11 21:58:00 to 13-AUG-11 21:59:00 (EST-5)
Location: HUNTERS
Magnitude: 1.00 
Reported by: Amateur Radio

Thunderstorm Wind in MONROE, INDIANA
From 13-AUG-11 22:05:00 to 13-AUG-11 22:05:00 (EST-5)
Location: BLOOMINGTON
Magnitude: 52.00 EG
Reported by: Trained Spotter

An estimated 60 mph thunderstorm wind gust was observed in this location. Pea-sized hail was also observed.

Hail in MONROE, INDIANA
From 13-AUG-11 22:12:00 to 13-AUG-11 22:14:00 (EST-5)
Location: BROADVIEW
Magnitude: 1.00 
Reported by: Trained Spotter

Thunderstorm Wind in MARION, INDIANA
From 13-AUG-11 19:49:00 to 13-AUG-11 19:49:00 (EST-5)
Location: SHOOTERS HILL
Magnitude: 61.00 EG
Property damage: 975.00K
Crop damage: 0.00K
Reported by: NWS Employee

A stage collapse occurred at the Indiana State Fairgrounds in between live performances by Sara Bareilles and Sugarland, as winds estimated at 60 to 70 mph hit the above-stage fly system. These damaging winds appeared to occur with the gust front that was out ahead of the area of precipitation. Seven fatalities and 43 injuries occurred as a result of this tragic stage collapse. The Indianapolis Business Journal estimates the damages at around 975 thousand dollars.

Hail in TIPPECANOE, INDIANA
From 13-AUG-11 18:25:00 to 13-AUG-11 18:27:00 (EST-5)
Location: KLONDYKE
Magnitude: 0.75 
Reported by: Trained Spotter

Hail in TIPPECANOE, INDIANA
From 13-AUG-11 18:27:00 to 13-AUG-11 18:29:00 (EST-5)
Location: WEST LAFAYETTE
Magnitude: 0.75 
Reported by: Trained Spotter

Hail in TIPPECANOE, INDIANA
From 13-AUG-11 18:32:00 to 13-AUG-11 18:34:00 (EST-5)
Location: WEST LAFAYETTE
Magnitude: 0.75 
Reported by: Amateur Radio

Hail in TIPPECANOE, INDIANA
From 13-AUG-11 18:34:00 to 13-AUG-11 18:36:00 (EST-5)
Location: LAFAYETTE
Magnitude: 0.75 
Reported by: Amateur Radio