On September 8th, the remnants of Tropical Storm Gordon was centered in southeast Missouri. Much of the moisture and energy from the system interacted with a stationary front running west to east through Kentucky. This produced efficient rainfall that caused flash flooding, and the environmental shear was strong enough to produce two tornadoes along the Ohio River in southern Indiana and north-central Kentucky.

Flash Flood in HARRISON, INDIANA
From 08-SEP-18 19:15:00 to 08-SEP-18 19:45:00 (EST-5)
Location: CORYDON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Major flooding was reported in Corydon. Water covered roads that do not normally flood.

Flash Flood in DUBOIS, INDIANA
From 08-SEP-18 19:45:00 to 08-SEP-18 20:15:00 (EST-5)
Location: BIRDSEYE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

State Road 145 was closed due to high water from Interstate 64 in Perry County north to State Road 64 near Birdseye.

Flood in DUBOIS, INDIANA
From 07-SEP-18 18:40:00 to 07-SEP-18 19:10:00 (EST-5)
Location: HUNTINGBURG ARPT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A section of Highway 200 W was closed by high water.

Thunderstorm Wind in PERRY, INDIANA
From 08-SEP-18 15:14:00 to 08-SEP-18 15:16:00 (EST-5)
Location: LEOPOLD
Magnitude: 53.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Trees were reported down.

Thunderstorm Wind in CRAWFORD, INDIANA
From 08-SEP-18 15:27:00 to 08-SEP-18 15:27:00 (EST-5)
Location: SULPHUR
Magnitude: 52.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A tree blew down on a power line.

Thunderstorm Wind in HARRISON, INDIANA
From 08-SEP-18 15:56:00 to 08-SEP-18 15:56:00 (EST-5)
Location: DOGWOOD
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

A tree fell down across Lake Road.

Thunderstorm Wind in HARRISON, INDIANA
From 08-SEP-18 16:04:00 to 08-SEP-18 16:04:00 (EST-5)
Location: NEW SALISBURY
Magnitude: 53.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

A tree fell down along Mayden Trail between Whiskey Run Road and State Road 64.

Thunderstorm Wind in CRAWFORD, INDIANA
From 08-SEP-18 16:54:00 to 08-SEP-18 16:54:00 (EST-5)
Location: LEAVENWORTH
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A tree blew down on State Road 62.

Thunderstorm Wind in PERRY, INDIANA
From 08-SEP-18 17:00:00 to 08-SEP-18 17:05:00 (EST-5)
Location: TROY
Magnitude: 53.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Multiple trees were reported down between Tell City and Troy.

Tornado in PERRY, INDIANA
From 08-SEP-18 14:38:00 to 08-SEP-18 14:44:00 (EST-5)
Location: TELL CITY
Tornado F-scale: EF0
Property damage: 80.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

The tornado touched down on Main Street in Tell City, midway between Steuben and Winkeireid Streets, doing minor damage to one roof and bending an amateur radio antenna tower. Moving east-northeast, the tornado damaged roofs and snapped several large tree limbs, as well as toppling a large but rotting tree that crushed the roof of a garage.  A small shed was lofted out of its yard and became entangled in utility lines 30 yards to the northeast.  As it crossed Winkeireid Street between 10th and 11th Streets, it buckled in a large overhead door and caused minor damage to the roof of the Indiana Southern Power building.  Continuing to the northeast, a large metal carport was lifted and blown 50 feet north into neighboring trees, and more tree limbs were snapped, while a vinyl fence was blown northwest, as was a large trampoline and a patio umbrella, which was entangled in utility lines northwest of its origin.
The tornado continued to cause tree damage as it moved east of 14th street into a more rural area. On Brushy Fork Rd, the tornado snapped the trunks of three large trees, then continued northeast into a wooded area. The last evidence of the tornado was at the north end of Quaker Rd, where small branches were broken.

Flash Flood in CRAWFORD, INDIANA
From 08-SEP-18 18:50:00 to 08-SEP-18 19:10:00 (EST-5)
Location: PILOT KNOB
Flood cause: Heavy Rain
Property damage: 2.00K
Crop damage: 0.00K
Reported by: NWS Employee

A creek flowed out of its banks and flowed through a barn. Much of the owner's yard was underwater.