A long lived line of thunderstorms tracked from Missouri through Illinois and Kentucky before stalling out across south-central Kentucky during the late afternoon hours on May 26. The humid air mass and slow moving storms brought excessive amounts of rainfall in a short time period. Flash flooding caused some roads to be closed along with some stranded cars.
Multiple people visiting and touring Hidden River Cave in the Horse Cave community became trapped as water rushed into the cave system. Rescue teams were initially unable to reach the stranded people, but eventually all were safely removed from the cave system. Between 2 and 4 inches of rain fell in less than 90 minutes.

Flash Flood in SIMPSON, KENTUCKY
From 26-MAY-16 15:15:00 to 26-MAY-16 15:15:00 (CST-6)
Location: NEOSHEO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

Kentucky state officials reported that KY 100 was flooded in Simpson County.

Thunderstorm Wind in EDMONSON, KENTUCKY
From 26-MAY-16 12:40:00 to 26-MAY-16 12:40:00 (CST-6)
Location: BROWNSVILLE
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotters relayed pictures from a Facebook post of sign and siding damage due to severe thunderstorm winds in the Brownsville area.

Flash Flood in HART, KENTUCKY
From 26-MAY-16 14:10:00 to 26-MAY-16 14:10:00 (CST-6)
Location: UNO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The Hart County emergency manager reported state highway 218 was flooded east of Horse Cave.

Flash Flood in HART, KENTUCKY
From 26-MAY-16 14:11:00 to 26-MAY-16 14:11:00 (CST-6)
Location: HORSE CAVE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Broadcast meteorologists relayed reports of people trapped in the Hidden River Cave System. Initial reports indicated that search and rescue teams were dispatched.

Flash Flood in SIMPSON, KENTUCKY
From 26-MAY-16 15:55:00 to 26-MAY-16 15:55:00 (CST-6)
Location: STOWERS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotters reported several roads in the western part of Simpson County flooded due to excessive rainfall from slow moving thunderstorms.

Flash Flood in SIMPSON, KENTUCKY
From 26-MAY-16 16:35:00 to 26-MAY-16 16:35:00 (CST-6)
Location: NEOSHEO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The Simpson County emergency manager reported Harris School road and Sulphur Spring Church road were closed due to high water and flooding. Additional roadways were closed across the western part of the county due to excessive rainfall.

Hail in GRAYSON, KENTUCKY
From 26-MAY-16 12:00:00 to 26-MAY-16 12:00:00 (CST-6)
Location: SPRING LICK
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in LARUE, KENTUCKY
From 26-MAY-16 14:03:00 to 26-MAY-16 14:03:00 (EST-5)
Location: UPTON
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in HART, KENTUCKY
From 26-MAY-16 12:57:00 to 26-MAY-16 12:57:00 (CST-6)
Location: LONE STAR
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter on Falling Springs Church road reported tree limbs down.

Hail in BUTLER, KENTUCKY
From 26-MAY-16 11:45:00 to 26-MAY-16 11:45:00 (CST-6)
Location: ELFIE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The Butler County emergency manager reported hail up to the size of pennies.

Thunderstorm Wind in TAYLOR, KENTUCKY
From 26-MAY-16 17:40:00 to 26-MAY-16 17:40:00 (EST-5)
Location: CAMPBELLSVILLE ARPT
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotters reported a large tree uprooted in Campbellsville.

Flash Flood in LOGAN, KENTUCKY
From 26-MAY-16 13:20:00 to 26-MAY-16 13:20:00 (CST-6)
Location: AUBURN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public reported high water flowing over Highway 103 in Logan County.

Flash Flood in WARREN, KENTUCKY
From 26-MAY-16 13:30:00 to 26-MAY-16 13:30:00 (CST-6)
Location: COHRON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public reported that Jackson Bridge Road was closed due to high water from excessive rainfall.

Flash Flood in WARREN, KENTUCKY
From 26-MAY-16 13:52:00 to 26-MAY-16 13:52:00 (CST-6)
Location: BOWLING GREEN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public reported a stranded car due to high water in the Fairview Mall parking lot.