A strong storm system in the upper levels of the atmosphere encountered a moderately unstable airmass across northeast Texas, southeast Oklahoma, southwest Arkansas and northern Louisiana. This storm system was in association with a 70kt low level jet and 160kt upper level jet. The lower atmosphere was strongly sheared with strong supercell thunderstorms across northern Texas and southern Oklahoma which produced strong tornadoes. As the storm system moved further east during the late evening hours of February 10th and the predawn hours of February 11th, the convection developed into a squall line which produced numerous reports of straight line wind gusts along with a few hail reports. There were also isolated tornadoes embedded within the squall line across Smith County in northeast Texas and Desoto Parish in northwest Louisiana.

Tornado in DE SOTO, LOUISIANA
From 11-FEB-09 01:04:00 to 11-FEB-09 01:06:00 (CST-6)
Location: KOLTER
Tornado F-scale: EF1
Property damage: 150.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A metal barn was mostly destroyed and portions of the metal frame were pulled out of the ground.  Several trailers were overturned and damaged.  Two homes sustained minor damage. And numerous trees were damaged or uprooted.

Thunderstorm Wind in CLAIBORNE, LOUISIANA
From 11-FEB-09 02:14:00 to 11-FEB-09 02:14:00 (CST-6)
Location: ATHENS
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A tree was downed in the community of Marsalis, Louisiana.

Thunderstorm Wind in CLAIBORNE, LOUISIANA
From 11-FEB-09 02:27:00 to 11-FEB-09 02:27:00 (CST-6)
Location: LISBON
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A tree was downed on Hwy. 152 in the community of Sharon, Louisiana.

Thunderstorm Wind in UNION, LOUISIANA
From 11-FEB-09 03:10:00 to 11-FEB-09 03:10:00 (CST-6)
Location: FARMERVILLE
Magnitude: 54.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous trees and power lines were downed across the entire parish.

Thunderstorm Wind in LINCOLN, LOUISIANA
From 11-FEB-09 02:44:00 to 11-FEB-09 02:44:00 (CST-6)
Location: DUBACH
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A tree was downed on Hwy. 152.

Thunderstorm Wind in DE SOTO, LOUISIANA
From 11-FEB-09 02:00:00 to 11-FEB-09 02:00:00 (CST-6)
Location: PELICAN
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A tree was downed in Pelican, Louisiana.

Thunderstorm Wind in DE SOTO, LOUISIANA
From 11-FEB-09 01:15:00 to 11-FEB-09 01:15:00 (CST-6)
Location: STONEWALL
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A tree was downed in the community of Stonewall, Louisiana.

Thunderstorm Wind in LINCOLN, LOUISIANA
From 11-FEB-09 02:44:00 to 11-FEB-09 02:44:00 (CST-6)
Location: SIMSBORO
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A tree was downed on Interstate 20 at mile marker 74.

Thunderstorm Wind in WEBSTER, LOUISIANA
From 11-FEB-09 01:50:00 to 11-FEB-09 01:50:00 (CST-6)
Location: SHONGALOO
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A tree was downed on Fire Tower Road.

Thunderstorm Wind in DE SOTO, LOUISIANA
From 11-FEB-09 01:15:00 to 11-FEB-09 01:15:00 (CST-6)
Location: KICKAPOO
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A tree was downed in the community of Gloster, Louisiana.

Thunderstorm Wind in DE SOTO, LOUISIANA
From 11-FEB-09 01:10:00 to 11-FEB-09 01:10:00 (CST-6)
Location: KEATCHIE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A tree was downed in the community of Keatchie, Louisiana.

Thunderstorm Wind in WEBSTER, LOUISIANA
From 11-FEB-09 01:40:00 to 11-FEB-09 01:40:00 (CST-6)
Location: COTTON VLY
Magnitude: 53.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Two trees were downed on Hwy. 371.

Thunderstorm Wind in WEBSTER, LOUISIANA
From 11-FEB-09 01:50:00 to 11-FEB-09 01:50:00 (CST-6)
Location: MINDEN
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A tree was downed on Hwy. 159.

Hail in CADDO, LOUISIANA
From 11-FEB-09 01:00:00 to 11-FEB-09 01:00:00 (CST-6)
Location: SPRING RIDGE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Penny sized hail fell in Bethany, Louisiana.

Thunderstorm Wind in BOSSIER, LOUISIANA
From 11-FEB-09 01:30:00 to 11-FEB-09 01:30:00 (CST-6)
Location: HAUGHTON
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A tree was downed and a 70 foot cedar fence was blown over.

Thunderstorm Wind in CADDO, LOUISIANA
From 11-FEB-09 01:10:00 to 11-FEB-09 01:10:00 (CST-6)
Location: JEWELLA
Magnitude: 54.00 EG
Property damage: 400.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous trees were downed across the city of Shreveport, Louisiana. Some of these trees fell across homes. There were no report of injuries.

Thunderstorm Wind in CADDO, LOUISIANA
From 11-FEB-09 01:16:00 to 11-FEB-09 01:16:00 (CST-6)
Location: JEWELLA
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Wind was measured at the Downtown Airport.

Thunderstorm Wind in BOSSIER, LOUISIANA
From 11-FEB-09 01:20:00 to 11-FEB-09 01:20:00 (CST-6)
Location: FOSTERS
Magnitude: 51.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Wind was measured at Barksdale Air Force Base.

Thunderstorm Wind in BOSSIER, LOUISIANA
From 11-FEB-09 01:25:00 to 11-FEB-09 01:25:00 (CST-6)
Location: FOSTERS
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A 6 inch diameter metal flag pole was bent over on Old Minden Road in Bossier City.