Thunderstorms developed in a hot and unstable atmosphere across central Indiana during the afternoon and early evening of July 17th. The storms produced 2 tornadoes in southeast Tippecanoe County along with some hail and strong winds elsewhere. The storms also brought very heavy rain, which resulted in flash flooding in some areas, including parts of the Indianapolis Metro Area.

Thunderstorm Wind in DECATUR, INDIANA
From 17-JUL-15 17:15:00 to 17-JUL-15 17:15:00 (EST-5)
Location: LETTS
Magnitude: 56.00 EG
Property damage: 8.00K
Reported by: Fire Department/Rescue

Numerous trees were downed along Route 3 due to damaging thunderstorm wind gusts.

Tornado in TIPPECANOE, INDIANA
From 17-JUL-15 15:33:00 to 17-JUL-15 15:34:00 (EST-5)
Location: STOCKWELL
Tornado F-scale: EF1
Property damage: 35.00K
Reported by: NWS Storm Survey

NWS survey revealed EF1 damage with approximately 100 mph winds affecting a residence south of Newcastle Road, between County Road 775 East and County Road 900 East in southeast Tippecanoe County. Numerous trees, west of the affected residence, had tops sheared off or were downed completely and a garage at the residence was destroyed.

Flash Flood in JOHNSON, INDIANA
From 17-JUL-15 21:00:00 to 17-JUL-15 23:30:00 (EST-5)
Location: SMITH VALLEY
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Honey Creek was overflowing at Paddock Road due to heavy thunderstorm rainfall. One car was abandoned because of the rising water. Water was filling yards and starting to flow over the road south of the bridge. The worst of the flooding is just north of the bridge to approximately Smith Valley Road.

Flood in TIPPECANOE, INDIANA
From 17-JUL-15 15:30:00 to 17-JUL-15 17:30:00 (EST-5)
Location: CAIRO
Flood cause: Heavy Rain
Property damage: 0.50K
Crop damage: 0.50K
Reported by: Trained Spotter

Some standing water was observed on County Road 75 East due to moderate to heavy rainfall.

Hail in RANDOLPH, INDIANA
From 17-JUL-15 14:45:00 to 17-JUL-15 14:47:00 (EST-5)
Location: LYNN
Magnitude: 1.00 
Reported by: Public

This report was relayed via amateur radio from a social media webpage.

Hail in TIPPECANOE, INDIANA
From 17-JUL-15 15:04:00 to 17-JUL-15 15:06:00 (EST-5)
Location: ARETZ ARPT
Magnitude: 0.75 
Reported by: Trained Spotter

Hail in MARION, INDIANA
From 17-JUL-15 15:27:00 to 17-JUL-15 15:29:00 (EST-5)
Location: INDIANAPOLIS
Magnitude: 0.75 
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in PARKE, INDIANA
From 17-JUL-15 17:16:00 to 17-JUL-15 17:16:00 (EST-5)
Location: MONTEZUMA
Magnitude: 52.00 EG
Reported by: Trained Spotter

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

Thunderstorm Wind in HENDRICKS, INDIANA
From 17-JUL-15 17:30:00 to 17-JUL-15 17:32:00 (EST-5)
Location: JOPPA
Magnitude: 52.00 EG
Reported by: Trained Spotter

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

Flood in MARION, INDIANA
From 17-JUL-15 18:29:00 to 17-JUL-15 20:30:00 (EST-5)
Location: INDIANAPOLIS
Flood cause: Heavy Rain
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Trained Spotter

Water was over a curb and taking up most of the northbound lane in the 600 block of Virginia Avenue in Fountain Square due to moderate to heavy rainfall.

Flood in JENNINGS, INDIANA
From 17-JUL-15 20:46:00 to 17-JUL-15 22:45:00 (EST-5)
Location: NORTH VERNON
Flood cause: Heavy Rain
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Broadcast Media

Highway 50 is flooded due to moderate to heavy rainfall, but traffic is able to get through.

Thunderstorm Wind in TIPPECANOE, INDIANA
From 17-JUL-15 15:04:00 to 17-JUL-15 15:04:00 (EST-5)
Location: ARETZ ARPT
Magnitude: 43.00 EG
Property damage: 0.10K
Crop damage: 0.00K
Reported by: Trained Spotter

Minor tree limbs were downed due to strong thunderstorm wind gusts.

Thunderstorm Wind in HENDRICKS, INDIANA
From 17-JUL-15 14:55:00 to 17-JUL-15 14:55:00 (EST-5)
Location: BROWNSBURG
Magnitude: 52.00 EG
Property damage: 8.00K
Reported by: Public

One large tree was down blocking Woodstock Drive due to damaging thunderstorm wind gusts. Numerous other trees were snapped in half as well as uprooted throughout Brownsburg.

Thunderstorm Wind in DECATUR, INDIANA
From 17-JUL-15 16:52:00 to 17-JUL-15 16:52:00 (EST-5)
Location: BURNEY
Magnitude: 52.00 EG
Property damage: 5.00K
Reported by: Trained Spotter

Trees or tree limbs were downed due to damaging thunderstorm wind gusts.

Thunderstorm Wind in BOONE, INDIANA
From 17-JUL-15 17:00:00 to 17-JUL-15 17:00:00 (EST-5)
Location: HAZELRIGG
Magnitude: 52.00 EG
Property damage: 3.00K
Reported by: Public

Many large tree branches were downed, some across roads and power lines, due to damaging thunderstorm wind gusts. Significant ponding of water was also observed.

Thunderstorm Wind in DECATUR, INDIANA
From 17-JUL-15 17:15:00 to 17-JUL-15 17:15:00 (EST-5)
Location: HARRIS CITY
Magnitude: 52.00 EG
Property damage: 8.00K
Reported by: Fire Department/Rescue

A tree was down on a vehicle near the intersection of County Roads 500 South and 20 West due to damaging thunderstorm wind gusts.

Tornado in TIPPECANOE, INDIANA
From 17-JUL-15 15:38:00 to 17-JUL-15 15:39:00 (EST-5)
Location: MONROE
Tornado F-scale: EF1
Property damage: 30.00K
Reported by: NWS Storm Survey

NWS survey revealed EF1 damage with approximately 97 mph winds in the southeast portion of Tippecanoe County, south of the intersection of Highway 52 and County Road 900 South. Observed damage included a collapsed garage, downed trees, and at least one home with vinyl siding removed.