Early on May 3rd, central Kentucky sat in the warm sector ahead of an approaching surface low. Much of the region saw only rain showers, but one isolated cell in southern Kentucky was able to produce a short lived EF-1 tornado in the city of Tompkinsville, KY.
On May 4th, a cold front, following the first system, produced additional rain showers and thunderstorms on the already saturated ground. The result was widespread flash flooding with isolated severe wind damage.

Flash Flood in WARREN, KENTUCKY
From 04-MAY-21 05:39:00 to 04-MAY-21 07:39:00 (CST-6)
Location: ROCKFIELD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Rockfield Browning Road had four feet of water over the roadway.

Flash Flood in WARREN, KENTUCKY
From 04-MAY-21 05:30:00 to 04-MAY-21 07:30:00 (CST-6)
Location: MEMPHIS JCT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

A car was flooded at Russellville and Campbell Lane.

Flash Flood in METCALFE, KENTUCKY
From 04-MAY-21 05:30:00 to 04-MAY-21 07:30:00 (CST-6)
Location: EDMONTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

River Road was flooded.

Flash Flood in BARREN, KENTUCKY
From 04-MAY-21 05:25:00 to 04-MAY-21 07:25:00 (CST-6)
Location: GLASGOW MUNI ARPT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

US 31 East was flooded in Glasgow.

Thunderstorm Wind in CUMBERLAND, KENTUCKY
From 04-MAY-21 03:10:00 to 04-MAY-21 03:10:00 (CST-6)
Location: BURKESVILLE
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Dispatch reported trees down in the Burkesville city limits.

Flash Flood in CUMBERLAND, KENTUCKY
From 04-MAY-21 03:30:00 to 04-MAY-21 05:30:00 (CST-6)
Location: BURKESVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

There were reports of water over roadways.

Flash Flood in METCALFE, KENTUCKY
From 04-MAY-21 04:00:00 to 04-MAY-21 05:00:00 (CST-6)
Location: CLARKS CORNER
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Parts of Knob Lick Road were under water. The time was estimated by the dispatcher.

Flash Flood in EDMONSON, KENTUCKY
From 04-MAY-21 04:30:00 to 04-MAY-21 06:30:00 (CST-6)
Location: LINDSEYVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

There was a rapid rise in water over East Harris Road.

Flash Flood in WARREN, KENTUCKY
From 04-MAY-21 05:07:00 to 04-MAY-21 07:07:00 (CST-6)
Location: GOTTS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The fire department advised that water was in a home on the 5000 block of Gotts Hydro Road. The cost of property damage is unknown.

Flash Flood in BARREN, KENTUCKY
From 04-MAY-21 05:25:00 to 04-MAY-21 06:25:00 (CST-6)
Location: GLASGOW
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Water was over the Cumberland Parkway eastbound at exit 14.

Tornado in MONROE, KENTUCKY
From 03-MAY-21 07:08:00 to 03-MAY-21 07:09:00 (CST-6)
Location: TOMPKINSVILLE
Tornado F-scale: EF1
Crop damage: 0.00K
Reported by: NWS Storm Survey

The National Weather Service determined an EF-1 tornado with maximum sustained winds of 95 mph caused a damage path 60 yards wide.
The thunderstorm quickly became severe in southwest Monroe County. It quickly became severe in southwest Monroe County and became tornadic on the southwest side of Tompkinsville. The tornado touched down near the intersection of Second and Jackson Streets. Trees were lying in multiple directions and most of them were twisted, snapped, or uprooted. Power lines were down, and several power poles were snapped. Winds at that location were between 85 and 90 mph with a width of 50 yards.
Farther to the northeast, between 5th Street and Carter Street, the tornado increased to 95 mph and the width expanded out to 60 yards. Several homes experienced roof damage with some windows blown out. One home had multiple large trees uprooted with a camper trailer and pontoon boat flipped over. There were several pieces of lumber that were impaled in the ground and pieces of sheet metal thrown into trees.
The US Bank building received roof damage before the tornado briefly lifted before touching down near the intersection of Pedigo and White Streets.
There was significant tree damage on the east of Main Street by Pedigo Street. Trees were facing multiple directions. Mud spatter was on the backside of homes and vehicles along Short Street to Monroe Street. Multiple power lines were down in the area. Winds decreased to 90 mph along Monroe Street.
The National Weather Service drone found some twisted tree tops near Spring Valley Road and Woodhaven as a result of wind speeds of 85 mph. The tornado lifted at Jackie Crow Salvage Yard as it threw debris on top of a hill about 250 yards from the salvage yard.
Several videos showed brief funnels coming down from the main storm, almost like a small skipping tornado.

Thunderstorm Wind in MARION, KENTUCKY
From 04-MAY-21 19:24:00 to 04-MAY-21 19:24:00 (EST-5)
Location: NURKES SPG
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

There was a report of lots of trees down near Makers Mark Distillery.

Thunderstorm Wind in MARION, KENTUCKY
From 04-MAY-21 19:18:00 to 04-MAY-21 19:18:00 (EST-5)
Location: GANDERTOWN
Magnitude: 51.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

First responders responded to trees down on Nerinx Road at the county line.

Hail in WARREN, KENTUCKY
From 03-MAY-21 23:26:00 to 03-MAY-21 23:26:00 (CST-6)
Location: BRISTOW
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported quarter and larger size hail.

Hail in WARREN, KENTUCKY
From 03-MAY-21 23:17:00 to 03-MAY-21 23:17:00 (CST-6)
Location: BOWLING GREEN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported quarter size hail.

Flash Flood in MONROE, KENTUCKY
From 04-MAY-21 07:30:00 to 04-MAY-21 09:30:00 (CST-6)
Location: JEFFREY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Photos on social media showed flooding over Bethlehem Church Road.

Flash Flood in MONROE, KENTUCKY
From 04-MAY-21 07:30:00 to 04-MAY-21 08:30:00 (CST-6)
Location: EMBERTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Images on social media showed high water from East Fork Creek over the County House Road Bridge.

Flash Flood in METCALFE, KENTUCKY
From 04-MAY-21 07:30:00 to 04-MAY-21 08:30:00 (CST-6)
Location: CURTIS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

The Cedar Flat Curtis Bridge flooded.

Flash Flood in METCALFE, KENTUCKY
From 04-MAY-21 07:30:00 to 04-MAY-21 08:30:00 (CST-6)
Location: WILLOW SHADE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Kentucky 90, Summer Shade Road, one mile west of the Cumberland/Metcalf County Line was closed due to flooding.

Flash Flood in CUMBERLAND, KENTUCKY
From 04-MAY-21 07:11:00 to 04-MAY-21 08:11:00 (CST-6)
Location: MARROWBONE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Kentucky 90 was closed due to flooding around Marrowbone.

Flash Flood in WARREN, KENTUCKY
From 04-MAY-21 06:10:00 to 04-MAY-21 08:10:00 (CST-6)
Location: MEMPHIS JCT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Cars were under about three feet of water at Russellville and Interstate 165. Cost of damage unknown.

Flash Flood in WARREN, KENTUCKY
From 04-MAY-21 06:08:00 to 04-MAY-21 08:08:00 (CST-6)
Location: THREE SPGS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Approximately three feet of water was over the road near the intersection of Three Springs Road and Smallhouse Road.

Flash Flood in BARREN, KENTUCKY
From 04-MAY-21 06:04:00 to 04-MAY-21 07:04:00 (CST-6)
Location: GLASGOW MUNI ARPT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Happy Valley Road had two feet of water over it.

Flash Flood in BUTLER, KENTUCKY
From 04-MAY-21 05:54:00 to 04-MAY-21 07:54:00 (CST-6)
Location: PLEASANT HILL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Several roads in the county were flooded.