A pronounced mid-level shortwave trough and associated 70 to 80 knot mid-level jet progressed northeastward from the southern Plains across Arkansas and Missouri. An associated surface low developed northeastward from southwest Missouri toward northwest Illinois. A gradual increase in the warm sector southerly low level jet occurred as the surface low deepened. Increasing vertical wind shear in the moist and unstable warm sector resulted in organized severe storms. The storms were organized into bowing lines with embedded supercell structures.

Tornado in CHRISTIAN, KENTUCKY
From 26-APR-11 00:05:00 to 26-APR-11 00:08:00 (CST-6)
Location: (HOP)FT CAMPBELL AAF
Tornado F-scale: EF3
Property damage: 1.00M
Crop damage: 0.00K
Reported by: NWS Storm Survey

The tornado struck the Fort Campbell airfield directly, causing extensive damage. One building structure destroyed was rated for 104 mph winds. Several very large and heavy constructed buildings suffered major damage at the Fort Campbell Army Airfield. Large doors to these buildings, which were rated for 115 to 144 mph winds, were blown in. Several other smaller buildings received minor to major damage. Numerous heavy vehicles were damaged, with at least three flipped over. Immediately north of the airfield, across farmland, several dozen trees were snapped or uprooted, two barns were heavily damaged, three power poles were blown down, and some shingles were blown off a house. A security guard witnessed the tornado during two separate illuminations provided by lightning. The security guard's vehicle was moved backward approximately ten feet during the tornado. A second security guard witnessed the tornado. Two security cameras recorded the tornado passage. One camera showed winds blowing in opposite directions over an approximate 30-second interval. Peak winds were estimated near 140 mph. The average path width was 250 yards.

Thunderstorm Wind in HENDERSON, KENTUCKY
From 26-APR-11 00:45:00 to 26-APR-11 00:50:00 (CST-6)
Location: HENDERSON
Magnitude: 62.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter measured a wind gust to 71 mph near Spottsville. A Kentucky mesonet site measured a wind gust to 66 mph several miles east of Henderson.

Thunderstorm Wind in WEBSTER, KENTUCKY
From 26-APR-11 00:12:00 to 26-APR-11 00:14:00 (CST-6)
Location: PROVIDENCE
Magnitude: 56.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Newspaper

In Clay, several trees were blown down. One of the trees fell on a car. Carports and fences were damaged on Kentucky Highway 132. In Providence, several tree limbs and power lines were down.

Thunderstorm Wind in CRITTENDEN, KENTUCKY
From 26-APR-11 00:00:00 to 26-APR-11 00:00:00 (CST-6)
Location: REPTON
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

This wind gust was measured at a Kentucky mesonet site.

Hail in MCCRACKEN, KENTUCKY
From 25-APR-11 22:55:00 to 25-APR-11 22:55:00 (CST-6)
Location: MASSAC
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Tornado in LYON, KENTUCKY
From 25-APR-11 23:37:00 to 25-APR-11 23:42:00 (CST-6)
Location: KUTTAWA
Tornado F-scale: EF1
Property damage: 150.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

The tornado uprooted trees and snapped branches. The tornado struck a marina on Lake Barkley. There was substantial damage to boat docks and to the roofing of one home. One boat capsized. Peak winds were estimated near 90 mph. The path width  was only 30 yards on average.

Tornado in LYON, KENTUCKY
From 25-APR-11 23:40:00 to 25-APR-11 23:50:00 (CST-6)
Location: EDDYVILLE
Tornado F-scale: EF1
Property damage: 100.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

The intermittent damage path began along Highway 373, producing mainly tree damage. Further northeast, barns and trees were damaged, along with shingles off roofs. Peak winds were estimated near 95 mph. The average path width was 75 yards. The tornado continued northeast into Caldwell County.

Thunderstorm Wind in CALLOWAY, KENTUCKY
From 25-APR-11 23:15:00 to 25-APR-11 23:30:00 (CST-6)
Location: MURRAY
Magnitude: 88.00 MG
Property damage: 2.00M
Crop damage: 0.00K
Reported by: Mesonet

A Kentucky mesonet site measured a wind gust to 101 mph. A number of buildings were damaged, and an industrial warehouse was destroyed. Half the roof was torn off an auto parts store. There was extensive damage to trees and power lines in the city of Murray. Some trees were down on houses. Power poles were down. Roads were blocked. An eight-foot section of siding was blown off a manufacturing plant on the north side of Murray. Two rooftop air conditioning units were blown over. Two barns were blown down. City and county schools and Murray State University were cancelled the following day due to widespread power outages and blocked roads. The county emergency operations center was set up for the first time since the January, 2009 ice storm. Veteran utility workers declared that damage exceeded that from the 2009 ice storm.

Thunderstorm Wind in CALLOWAY, KENTUCKY
From 25-APR-11 23:30:00 to 25-APR-11 23:30:00 (CST-6)
Location: VAN CLEAVE
Magnitude: 61.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The damaging winds that struck Murray continued east across the eastern portion of the county. Large trees from 12 to 18 inches in diameter were uprooted off Kentucky 464 in northeast Calloway County. Power lines were down. A double-wide mobile home was overturned on Kentucky 94 east of Murray. Nearby, the top of a silo was blown off.

Thunderstorm Wind in TRIGG, KENTUCKY
From 25-APR-11 23:45:00 to 25-APR-11 23:45:00 (CST-6)
Location: CADIZ
Magnitude: 70.00 EG
Property damage: 200.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Numerous trees and power lines were blown down. About 1,500 utility customers lost power. A number of houses and public buildings were damaged. Emergency declarations were signed by the city of Cadiz and Trigg County.

Thunderstorm Wind in TODD, KENTUCKY
From 26-APR-11 00:14:00 to 26-APR-11 00:14:00 (CST-6)
Location: ELKTON
Magnitude: 65.00 EG
Property damage: 80.00K
Crop damage: 0.00K
Reported by: Newspaper

Power poles were down along a one-half mile stretch of U.S. Highway 68. One house was heavily damaged by a falling tree. About half of Todd County was without power through early the next morning.

Thunderstorm Wind in TRIGG, KENTUCKY
From 25-APR-11 23:36:00 to 25-APR-11 23:36:00 (CST-6)
Location: GOLDEN POND
Magnitude: 70.00 EG
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

At Wrangler's Campground within the Land Between The Lakes National Recreation Area, an apparent microburst downed 40 acres of hardwood trees. Trees fell on three cabins, one historic barn, one horse barn, and one vehicle. One hundred miles of trails were closed. Power lines were down.

Thunderstorm Wind in CHRISTIAN, KENTUCKY
From 26-APR-11 00:04:00 to 26-APR-11 00:04:00 (CST-6)
Location: GRACEY
Magnitude: 55.00 MG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: AWOS

A wind gust to 55 knots was measured by automated observing equipment at Fort Campbell. A seven-mile stretch of Kentucky Highway 117 was closed due to multiple trees and power lines across it.

Thunderstorm Wind in TODD, KENTUCKY
From 26-APR-11 00:10:00 to 26-APR-11 00:10:00 (CST-6)
Location: TRENTON
Magnitude: 70.00 EG
Property damage: 150.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Two houses in Trenton sustained major damage, including partial destruction of an exterior wall. Some other homes received minor damage. Most of the house damage was due to falling trees. Trees and power poles were down.

Tornado in GRAVES, KENTUCKY
From 25-APR-11 22:53:00 to 25-APR-11 23:03:00 (CST-6)
Location: DUKEDOM
Tornado F-scale: EF1
Property damage: 100.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This tornado crossed into Graves County from Weakley County, Tennessee. The tornado initially paralleled the state line, where mainly tree damage occurred. Along Kentucky Highway 303, a home was damaged. The side porch was lifted. A gazebo and a playhouse were destroyed. A garage at the north end of the house sustained major damage. Small portions of nearby grape vines were impaled in the roof of the porch, and a stick was impaled in the house. As the tornado moved northeast, mainly tree damage occurred, with uprooted trees and large limbs down. There was some tree damage south of the path near Lynnville, which was from straight-line winds. Peak winds were estimated near 100 mph. The average path width was 75 yards.

Tornado in CALLOWAY, KENTUCKY
From 25-APR-11 23:30:00 to 25-APR-11 23:31:00 (CST-6)
Location: WADESBORO
Tornado F-scale: EF0
Property damage: 80.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A brief touchdown occurred, with numerous trees snapped or uprooted. There were varying degrees of roof damage to a few buildings. One metal-framed building was crushed. Peak winds were estimated near 70 mph. The average path width was 150 yards.

Tornado in CALDWELL, KENTUCKY
From 25-APR-11 23:50:00 to 25-APR-11 23:59:00 (CST-6)
Location: BAKERS
Tornado F-scale: EF1
Property damage: 100.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

The tornado continued from Lyon County into Caldwell County. Near U.S. Highway 641, several trees were uprooted and snapped. A carport was destroyed, but damage to homes was mainly to shingles. To the east of Fredonia, a barn was destroyed with debris blown several hundred yards. Nearby barns sustained major roof damage, and several power poles were snapped. To the northeast of this area, mainly tree and shingle damage occurred. The tornado was on the ground intermittently throughout the path. Peak winds were estimated near 95 mph. The average path width was 75 yards.