A series of lines of showers and thunderstorms developed across central Illinois and moved southeast into central Indiana during much of the day into the evening on June 10th. The first line produced some damaging wind and small hail in the northeast. The next batch provided mainly thunderstorm wind gusts across west-central and central Indiana. After that, large hail was reported in Knox County during the late afternoon, with flash flooding reported during the evening hours.

Thunderstorm Wind in TIPPECANOE, INDIANA
From 10-JUN-18 05:36:00 to 10-JUN-18 05:36:00 (EST-5)
Location: ROMNEY
Magnitude: 52.00 EG
Property damage: 0.80K
Reported by: Public

Several large limbs of unknown size had broken off of a healthy tree due to damaging thunderstorm wind gusts. This report was relayed via social media.

Thunderstorm Wind in VIGO, INDIANA
From 10-JUN-18 15:26:00 to 10-JUN-18 15:26:00 (EST-5)
Location: ATHERTON
Magnitude: 56.00 EG
Property damage: 1.50K
Reported by: Public

A 100-foot tall tree was blown down across Lambert Avenue near Highway 41 near the Parke/Vigo County border due to damaging thunderstorm wind gusts.

Thunderstorm Wind in VERMILLION, INDIANA
From 10-JUN-18 15:26:00 to 10-JUN-18 15:26:00 (EST-5)
Location: UNIVERSAL
Magnitude: 52.00 EG
Reported by: Amateur Radio

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

Thunderstorm Wind in PUTNAM, INDIANA
From 10-JUN-18 15:32:00 to 10-JUN-18 15:32:00 (EST-5)
Location: MORTON
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 2.00K
Reported by: Emergency Manager

Scattered tree limbs were downed and a couple trees snapped about halfway up their trunks due to damaging thunderstorm wind gusts. This occurred in the vicinity of County Road 880 West and County Road 750 North. In this same general area, other trees and tree limbs were down as well as damage to some corn crops.

Thunderstorm Wind in VIGO, INDIANA
From 10-JUN-18 15:37:00 to 10-JUN-18 15:37:00 (EST-5)
Location: PRESTON
Magnitude: 52.00 EG
Reported by: Amateur Radio

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

Thunderstorm Wind in PARKE, INDIANA
From 10-JUN-18 15:33:00 to 10-JUN-18 15:33:00 (EST-5)
Location: MARSHALL
Magnitude: 56.00 EG
Property damage: 8.00K
Reported by: COOP Observer

Trees were down across roads around a neighborhood in this location due to damaging thunderstorm wind gusts. The power was out as well.

Thunderstorm Wind in PUTNAM, INDIANA
From 10-JUN-18 15:39:00 to 10-JUN-18 15:39:00 (EST-5)
Location: MORTON
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 1.00K
Reported by: Emergency Manager

Approximately one mile north of Morton, a large tree and corn stalks were blown down due to damaging thunderstorm wind gusts.

Thunderstorm Wind in PUTNAM, INDIANA
From 10-JUN-18 15:47:00 to 10-JUN-18 15:47:00 (EST-5)
Location: COMMERCIAL PLACE
Magnitude: 52.00 EG
Property damage: 1.00K
Reported by: Public

One tree or large branch was blown down in Greencastle due to damaging thunderstorm wind gusts. This report was received via Twitter.

Thunderstorm Wind in HENDRICKS, INDIANA
From 10-JUN-18 16:08:00 to 10-JUN-18 16:08:00 (EST-5)
Location: CLAYTON
Magnitude: 48.00 EG
Property damage: 0.25K
Reported by: Amateur Radio

A 6-inch diameter tree limb was blown down at County Road 100 West and Highway 40 due to strong thunderstorm wind gusts.

Thunderstorm Wind in HENDRICKS, INDIANA
From 10-JUN-18 16:08:00 to 10-JUN-18 16:08:00 (EST-5)
Location: DANVILLE
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A large tree was downed on State Road 39 in Danville due to damaging thunderstorm wind gusts.

Thunderstorm Wind in HENDRICKS, INDIANA
From 10-JUN-18 16:16:00 to 10-JUN-18 16:16:00 (EST-5)
Location: AVON
Magnitude: 52.00 EG
Property damage: 0.50K
Reported by: Public

A six to eight-inch diameter section of a moderate-sized tree split off due to damaging thunderstorm wind gusts.

Thunderstorm Wind in MORGAN, INDIANA
From 10-JUN-18 16:18:00 to 10-JUN-18 16:18:00 (EST-5)
Location: MOORESVILLE
Magnitude: 56.00 EG
Property damage: 1.50K
Reported by: NWS Employee

A large tree was downed in Pioneer Park due to damaging thunderstorm wind gusts. The fallen tree required a bulldozer to remove.

Hail in KNOX, INDIANA
From 10-JUN-18 16:49:00 to 10-JUN-18 16:51:00 (EST-5)
Location: DECKER
Magnitude: 1.00 
Reported by: Emergency Manager

This report was relayed via amateur radio.

Flash Flood in KNOX, INDIANA
From 10-JUN-18 18:47:00 to 10-JUN-18 23:00:00 (EST-5)
Location: DECKER
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 5.00K
Reported by: Public

Cattle Barn Road in southern Knox County was flooded due to heavy thunderstorm rainfall.

Hail in PARKE, INDIANA
From 10-JUN-18 05:45:00 to 10-JUN-18 05:47:00 (EST-5)
Location: ANNAPOLIS
Magnitude: 0.88 
Reported by: Trained Spotter

Dime to nickel sized hail was observed in this location.

Thunderstorm Wind in PUTNAM, INDIANA
From 10-JUN-18 15:39:00 to 10-JUN-18 15:39:00 (EST-5)
Location: RUSSELLVILLE
Magnitude: 56.00 EG
Property damage: 12.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Scattered trees were downed across the northwest quarter of the county due to damaging thunderstorm wind gusts.

Hail in KNOX, INDIANA
From 10-JUN-18 16:50:00 to 10-JUN-18 16:59:00 (EST-5)
Location: DECKER
Magnitude: 1.00 
Reported by: Public

This report was received via Twitter.

Thunderstorm Wind in HENDRICKS, INDIANA
From 10-JUN-18 16:06:00 to 10-JUN-18 16:06:00 (EST-5)
Location: HADLEY
Magnitude: 52.00 EG
Property damage: 6.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Tree branches and/or trees were downed on Highway 36 due to damaging thunderstorm wind gusts.