A mature, very intense derecho moved rapidly east along a stationary front across the Mid Mississippi Valley into the Lower Ohio Valley. Winds along the bowing portion of the derecho weakened significantly before entering western Kentucky. Near the comma head on the northern end of the bow, some minor damage occurred in Union County. However, there was significantly less damage than what occurred with the comma head in southern Illinois. Very heavy rain accompanied the system, causing localized flash flooding.

Heavy Rain in CHRISTIAN, KENTUCKY
From 08-MAY-09 12:30:00 to 08-MAY-09 13:30:00 (CST-6)
Location: HOPKINSVILLE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Minor street flooding was reported.

Heavy Rain in CRITTENDEN, KENTUCKY
From 08-MAY-09 13:30:00 to 08-MAY-09 16:00:00 (CST-6)
Location: MARION
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

Due to creek flooding, about five feet of water covered a helipad at a medical facility. The flooding there typically occurs three or four times a year.

Heavy Rain in HOPKINS, KENTUCKY
From 08-MAY-09 12:30:00 to 08-MAY-09 14:00:00 (CST-6)
Location: MORTONS GAP
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

In Madisonville, stormwater ditches became clogged with debris, causing local flooding of yards, streets, and some outbuildings. In one neighborhood, water was up to seven inches deep in a garage. Several roads near Hanson were briefly under water. At Mortons Gap, water was flowing across U.S. Highway 41.

Thunderstorm Wind in CHRISTIAN, KENTUCKY
From 08-MAY-09 12:50:00 to 08-MAY-09 12:50:00 (CST-6)
Location: HOPKINSVILLE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter estimated these strong wind gusts at Western State Hospital.

Thunderstorm Wind in GRAVES, KENTUCKY
From 08-MAY-09 11:15:00 to 08-MAY-09 11:15:00 (CST-6)
Location: FANCY FARM
Magnitude: 78.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A microburst along the leading edge of a bow echo produced substantial damage at a farm. The metal top was blown off a cinder block silo. There was siding damage at a residence. A large section of a chick house lost its roof. The path length was about 500 yards, and the width was only 50 yards.

Thunderstorm Wind in UNION, KENTUCKY
From 08-MAY-09 13:38:00 to 08-MAY-09 13:38:00 (CST-6)
Location: MORGANFIELD
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Some trees were blown down, mostly small ones.

Flash Flood in MCLEAN, KENTUCKY
From 08-MAY-09 13:00:00 to 08-MAY-09 17:30:00 (CST-6)
Location: CALHOUN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Water was over many roads, including Highway 136.

Flash Flood in MUHLENBERG, KENTUCKY
From 08-MAY-09 13:15:00 to 08-MAY-09 17:30:00 (CST-6)
Location: CENTRAL CITY
Flood cause: Heavy Rain
Property damage: 8.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Many roads were flooded in Powderly and Central City. Near Greenville, three to four feet of water flooded a farm, and horses had to be evacuated.