A large high-precipitation supercell moved into northwest portions of central Indiana during the afternoon hours of August 18th. This supercell then transitioned to compact bow echo as it moved eastward, impacting the heart of the Indy metro area. Multiple reports of trees and power lines downed, heavy rain, few large hail reports.

Thunderstorm Wind in MONTGOMERY, INDIANA
From 18-AUG-19 17:15:00 to 18-AUG-19 17:15:00 (EST-5)
Location: YOUNTSVILLE
Magnitude: 56.00 EG
Reported by: Storm Chaser

An estimated 65 mph thunderstorm wind gust was observed in this location.

Thunderstorm Wind in HENDRICKS, INDIANA
From 18-AUG-19 18:28:00 to 18-AUG-19 18:28:00 (EST-5)
Location: SPEEDWAY ARPT
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Several 4-inch tree limbs were snapped due to damaging thunderstorm wind gusts.

Thunderstorm Wind in HENDRICKS, INDIANA
From 18-AUG-19 18:28:00 to 18-AUG-19 18:28:00 (EST-5)
Location: SPEEDWAY ARPT
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Amateur Radio

An 8-inch tree limb and a 12-inch tree was snapped due to damaging thunderstorm wind gusts.

Thunderstorm Wind in HENDRICKS, INDIANA
From 18-AUG-19 18:28:00 to 18-AUG-19 18:28:00 (EST-5)
Location: BROWNSBURG
Magnitude: 52.00 EG
Reported by: Trained Spotter

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

Thunderstorm Wind in HENRY, INDIANA
From 18-AUG-19 18:30:00 to 18-AUG-19 18:30:00 (EST-5)
Location: NEW CASTLE
Magnitude: 56.00 EG
Property damage: 1.25K
Crop damage: 0.00K
Reported by: Amateur Radio

A tree with an 18-inch base was downed due to damaging thunderstorm wind gusts.

Hail in HENRY, INDIANA
From 18-AUG-19 18:40:00 to 18-AUG-19 18:42:00 (EST-5)
Location: MT SUMMIT
Magnitude: 1.75 
Reported by: Public

A picture of this event looked like multiple smaller hailstones were fused together.

Thunderstorm Wind in MARION, INDIANA
From 18-AUG-19 18:41:00 to 18-AUG-19 18:41:00 (EST-5)
Location: HOMECROFT
Magnitude: 52.00 EG
Reported by: Trained Spotter

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

Thunderstorm Wind in HENRY, INDIANA
From 18-AUG-19 18:47:00 to 18-AUG-19 18:47:00 (EST-5)
Location: BLOUNTSVILLE
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Public

Numerous 4 to 6-inch tree limbs were snapped due to damaging thunderstorm wind gusts.

Hail in MARION, INDIANA
From 18-AUG-19 18:50:00 to 18-AUG-19 18:52:00 (EST-5)
Location: WOODSTOCK
Magnitude: 1.00 
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in MARION, INDIANA
From 18-AUG-19 18:33:00 to 18-AUG-19 18:33:00 (EST-5)
Location: VALLEY MILLS
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: NWS Employee

A small tree and multiple large limbs were snapped at the Indianapolis Weather Forecast Office due to damaging thunderstorm wind gusts.

Thunderstorm Wind in HAMILTON, INDIANA
From 18-AUG-19 18:33:00 to 18-AUG-19 18:33:00 (EST-5)
Location: HOME PLACE
Magnitude: 51.00 MG
Reported by: Mesonet

A mesonet station measured a 59 mph thunderstorm wind gust in this location.

Thunderstorm Wind in MORGAN, INDIANA
From 18-AUG-19 18:55:00 to 18-AUG-19 18:55:00 (EST-5)
Location: MOORESVILLE
Magnitude: 56.00 MG
Reported by: Public

A measured 65 mph thunderstorm wind gust was observed in this location.

Thunderstorm Wind in HANCOCK, INDIANA
From 18-AUG-19 19:10:00 to 18-AUG-19 19:10:00 (EST-5)
Location: MOHAWK
Magnitude: 56.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: State Official

Several large tree limbs and power poles were snapped due to damaging thunderstorm wind gusts.

Thunderstorm Wind in VERMILLION, INDIANA
From 18-AUG-19 16:45:00 to 18-AUG-19 16:45:00 (EST-5)
Location: PERRYSVILLE
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Public

Several small to medium size tree limbs were down and power was out in this location due to damaging thunderstorm wind gusts.

Thunderstorm Wind in FOUNTAIN, INDIANA
From 18-AUG-19 17:10:00 to 18-AUG-19 17:10:00 (EST-5)
Location: HILLSBORO
Magnitude: 56.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Public

Trees were downed, including on to power lines, in this location due to damaging thunderstorm wind gusts.

Thunderstorm Wind in FOUNTAIN, INDIANA
From 18-AUG-19 17:10:00 to 18-AUG-19 17:10:00 (EST-5)
Location: VEEDERSBURG
Magnitude: 52.00 EG
Reported by: Public

This was a public report of an estimated 60 mph thunderstorm wind gust in this location.