A strong and long lived outflow boundary moved from northeast to southwest through Southwest Arkansas, into Northwest Louisiana, and then into Northeast Texas during the daytime hours on 8/24/2011.  Ahead of the boundary was very hot and unstable air with temperatures at or just above 100 degrees.  Strong damaging winds occurred along the initial gust front with the outflow boundary and also occasionally within the thunderstorms in the wake of the outflow boundary.

Thunderstorm Wind in OUACHITA, LOUISIANA
From 24-AUG-11 11:54:00 to 24-AUG-11 11:54:00 (CST-6)
Location: LAKESHORE
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

A 58 mph wind gust was recorded at the Monroe, Louisiana airport.

Thunderstorm Wind in CLAIBORNE, LOUISIANA
From 24-AUG-11 12:00:00 to 24-AUG-11 12:00:00 (CST-6)
Location: HOMER
Magnitude: 58.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Numerous trees were downed just north of Homer, Louisiana.

Thunderstorm Wind in BOSSIER, LOUISIANA
From 24-AUG-11 12:00:00 to 24-AUG-11 12:00:00 (CST-6)
Location: PLAIN DEALING
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

Numerous trees were downed in Northern Bossier Parish near Plain Dealing.

Thunderstorm Wind in LINCOLN, LOUISIANA
From 24-AUG-11 12:00:00 to 24-AUG-11 12:00:00 (CST-6)
Location: GRAMBLING
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Two trees were downed along Interstate 20 west of Ruston, Louisiana.

Thunderstorm Wind in WEBSTER, LOUISIANA
From 24-AUG-11 12:00:00 to 24-AUG-11 12:00:00 (CST-6)
Location: COTTON VLY
Magnitude: 56.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

The fire department reported that a telephone pole was downed, as well as a large tree that fell on a house in Cotton Valley, Louisiana.

Thunderstorm Wind in CADDO, LOUISIANA
From 24-AUG-11 12:45:00 to 24-AUG-11 12:45:00 (CST-6)
Location: JEWELLA
Magnitude: 50.00 EG
Property damage: 0.10K
Crop damage: 0.00K
Reported by: NWS Employee

Shingles were blown off the roof of the National Weather Service office in Shreveport, Louisiana.

Thunderstorm Wind in CADDO, LOUISIANA
From 24-AUG-11 12:49:00 to 24-AUG-11 12:49:00 (CST-6)
Location: MT OLIVE
Magnitude: 53.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Isolated trees were reported down in Shreveport and across all of Caddo Parish.

Thunderstorm Wind in CADDO, LOUISIANA
From 24-AUG-11 12:58:00 to 24-AUG-11 12:58:00 (CST-6)
Location: JEWELLA
Magnitude: 53.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trees were downed on Bert Kouns Ind. Loop at 70th Street with one 30 foot tree blocking the road.

Thunderstorm Wind in SABINE, LOUISIANA
From 24-AUG-11 14:02:00 to 24-AUG-11 14:02:00 (CST-6)
Location: MANY
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees were downed all across the parish.  Several fell in Many, Louisiana.

Hail in WINN, LOUISIANA
From 24-AUG-11 14:02:00 to 24-AUG-11 14:02:00 (CST-6)
Location: WINNFIELD
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public