A cold front moved through southern Indiana and central Kentucky on the morning of February 28.  A strong low low level jet developed ahead of this front with winds of 60-80 knots at 2-3 thousand feet, resulting in very high speed shear and storm relative helicity values.  A squall line with bowing segments developed to the west of the Louisville forecast area and crossed the region during the early to mid morning hours.  This line produced multiple tornadoes across the region as well as straight line wind damage.

Thunderstorm Wind in ORANGE, INDIANA
From 28-FEB-11 03:46:00 to 28-FEB-11 03:46:00 (EST-5)
Location: VALEENE
Magnitude: 70.00 EG
Property damage: 10.00K
Reported by: Emergency Manager

Straight line wind damage was reported at 3 separate points north of Valeene.  About 2 miles northwest of Valeene an outbuilding was destroyed and a large cedar tree was uprooted.  The cedar tree broke an electric pole and pulled wires down to the ground.

Tornado in DUBOIS, INDIANA
From 28-FEB-11 03:19:00 to 28-FEB-11 03:30:00 (EST-5)
Location: MILLERSPORT
Tornado F-scale: EF2
Property damage: 500.00K
Reported by: NWS Storm Survey

An NWS storm survey confirmed that an EF-2 tornado with two segments touched down in Dubois county.  The tornado first touched down just north of Duff east of County Road 650W.  At touchdown straight-line wind damage was also observed to the south of the tornado.  Damage to several large metal buildings, a large barn, and a radio tower were observed as the tornado crossed Dubois County south of Jasper.
After a brief break in the path, the tornado touched down four miles southwest of Celestine and took a slight turn to the northeast.  The most significant damage along this segment was in Celestine near Ellsworth Road.  Damage included roofs blown off two brick homes with the walls collapsed in one home.  In addition a double-wide trailer was blown off its foundation and an RV was tossed across the road.  One minor injury was reported.  The tornado was rated EF-1 with winds of 100 mph and a path width of 75 yards in the first segment.  It was rated EF-2 with winds of 125 mph and a path width of 225 yards in the second segment.

Tornado in CLARK, INDIANA
From 28-FEB-11 04:29:00 to 28-FEB-11 04:30:00 (EST-5)
Location: WATSON
Tornado F-scale: EF0
Property damage: 5.00K
Reported by: NWS Storm Survey

An NWS storm survey confirmed a tornado which crossed the Ohio River from Clark county, IN to Jefferson county, KY.  The tornado was rated an EF-0 in Indiana and an EF-1 in Kentucky. This tornado touched down in Clark County near Centennial Boulevard.  Large hardwood trees were uprooted along the tornado's path towards Utica.  A house on Middle Road had a tin roof blown off and thrown 200 yards.  A couple of garage doors were dented in.  Winds along this part of the tornado path were estimated to be 85 mph with a path width of 100 yards.

Thunderstorm Wind in CRAWFORD, INDIANA
From 28-FEB-11 03:50:00 to 28-FEB-11 03:50:00 (EST-5)
Location: MARENGO
Magnitude: 52.00 EG
Reported by: Law Enforcement

State road 66 south of Marengo was closed due to power lines down on the road.

Thunderstorm Wind in WASHINGTON, INDIANA
From 28-FEB-11 04:05:00 to 28-FEB-11 04:05:00 (EST-5)
Location: ROSEBUD
Magnitude: 61.00 EG
Property damage: 3.00K
Reported by: Trained Spotter

Three modular homes sustained roof damage.

Thunderstorm Wind in FLOYD, INDIANA
From 28-FEB-11 04:22:00 to 28-FEB-11 04:22:00 (EST-5)
Location: NEW ALBANY
Magnitude: 52.00 EG
Property damage: 5.00K
Reported by: Broadcast Media

A Wal-Mart in New Albany sustained roof damage.

Thunderstorm Wind in DUBOIS, INDIANA
From 28-FEB-11 03:23:00 to 28-FEB-11 03:23:00 (EST-5)
Location: IRELAND
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported a measured wind gust of 64 mph.

Thunderstorm Wind in CRAWFORD, INDIANA
From 28-FEB-11 03:48:00 to 28-FEB-11 03:48:00 (EST-5)
Location: ENGLISH
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Dime size hail and 60 mph winds were reported by a trained spotter.

Thunderstorm Wind in CRAWFORD, INDIANA
From 28-FEB-11 03:54:00 to 28-FEB-11 03:54:00 (EST-5)
Location: MAGNOLIA
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported winds of 65 mph.