Thunderstorms developed during the afternoon and evening hours as a low pressure system moved through a warm and humid airmass that was in place across the Ohio Valley.

Thunderstorm Wind in MASON, KENTUCKY
From 18-JUN-21 21:11:00 to 18-JUN-21 21:15:00 (EST-5)
Location: SPRINGDALE
Magnitude: 60.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Numerous trees and power poles were downed east of Maysville along State Routes 9 and 10.

Thunderstorm Wind in LEWIS, KENTUCKY
From 18-JUN-21 21:45:00 to 18-JUN-21 22:00:00 (EST-5)
Location: HERRON HILL
Magnitude: 55.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: State Official

Numerous trees were downed across western portions of Lewis County.

Flood in CARROLL, KENTUCKY
From 18-JUN-21 23:30:00 to 19-JUN-21 00:30:00 (EST-5)
Location: CARROLLTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

High water resulted in a brief closure of Schuerman Street.

Flood in BOONE, KENTUCKY
From 19-JUN-21 08:00:00 to 19-JUN-21 09:00:00 (EST-5)
Location: SUGARTIT
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: State Official

A vehicle was stuck on Gunpowder Road due to high water.

Thunderstorm Wind in BOONE, KENTUCKY
From 18-JUN-21 20:14:00 to 18-JUN-21 20:18:00 (EST-5)
Location: LIMABURG
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Public

Numerous trees were downed in the Hebron and Burlington areas, including along Camp Ernst Road.

Thunderstorm Wind in BOONE, KENTUCKY
From 18-JUN-21 20:18:00 to 18-JUN-21 20:20:00 (EST-5)
Location: HUEYS CORNER
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

Several trees were downed in the Boone County Arboretum.

Thunderstorm Wind in BOONE, KENTUCKY
From 18-JUN-21 20:28:00 to 18-JUN-21 20:30:00 (EST-5)
Location: WALTON
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Public

A few trees were downed near exit 171 on I-75.

Thunderstorm Wind in BOONE, KENTUCKY
From 18-JUN-21 20:19:00 to 18-JUN-21 20:21:00 (EST-5)
Location: LIMABURG
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Public

A few trees were downed in the Thunder Ridge Subdivision.

Thunderstorm Wind in PENDLETON, KENTUCKY
From 18-JUN-21 20:45:00 to 18-JUN-21 21:00:00 (EST-5)
Location: FALMOUTH
Magnitude: 50.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: State Official

Numerous trees were downed across Pendleton County.

Thunderstorm Wind in BOONE, KENTUCKY
From 18-JUN-21 20:05:00 to 18-JUN-21 20:10:00 (EST-5)
Location: PETERSBURG
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: State Official

Numerous trees were downed along Petersburg and Belleview Roads.

Tornado in BOONE, KENTUCKY
From 18-JUN-21 20:09:00 to 18-JUN-21 20:14:00 (EST-5)
Location: IDLEWILD
Tornado F-scale: EF1
Property damage: 50.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

The tornado first touched down near a home on Stevens Road in northern Boone County, northwest of Idlewild, causing minor roof damage to the home and damaging trees on the property.  About a mile downstream, the tornado struck a barn, removing the roof and collapsing the walls.  Numerous trees were also uprooted in the vicinity of the barn. Roofing material was lifted and deposited a considerable distance downstream, with roofing material lying along I-275 almost a half of a mile downstream of the barn.  The tornado continued east along I-275 causing sporadic but minor tree damage. Another barn was damaged with partial roof removal on the south side of I-275.  Some of this material was carried across I-275 and deposited about a half mile downstream on a nearby golf course.  The tornado appears to have lifted in the vicinity of I-275, about a mile west of Exit 8.
There were some gaps in the damage path, indicating the tornado was not in complete and constant contact with the ground. The vast majority of the tree damage indicated wind speeds between 60 and 75 mph, though indications of wind speeds around 90 mph were present with the heavily damaged barn on the south side of I-275.

Thunderstorm Wind in MASON, KENTUCKY
From 18-JUN-21 21:26:00 to 18-JUN-21 21:27:00 (EST-5)
Location: LEWISBURG
Magnitude: 58.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

The gust was reported on the 21:35 EST observation. The gust time was estimated based on radar data.