A strong upper level trough across the southern Great Basin ejected out into the Southern Plains during the day on May 21st. Strong convection developed during peak heating across the region and this convection was aided by moderate to strong instability, excessive deep layer shear and mid level lapse rates. Add a frontal boundary to the mix and severe thunderstorms became widespread, some of which produced large hail and damaging thunderstorm wind gusts.

Thunderstorm Wind in BOSSIER, LOUISIANA
From 21-MAY-13 17:48:00 to 21-MAY-13 17:48:00 (CST-6)
Location: PLAIN DEALING
Magnitude: 54.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several trees were downed in Plain Dealing, Louisiana.

Thunderstorm Wind in CADDO, LOUISIANA
From 21-MAY-13 18:15:00 to 21-MAY-13 18:15:00 (CST-6)
Location: LA ROSEN
Magnitude: 54.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Trees were downed on Crabapple Drive in south Shreveport.

Thunderstorm Wind in DE SOTO, LOUISIANA
From 21-MAY-13 18:20:00 to 21-MAY-13 18:20:00 (CST-6)
Location: GRAND CANE
Magnitude: 54.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees were downed in Grand Cane, Louisiana.

Thunderstorm Wind in WEBSTER, LOUISIANA
From 21-MAY-13 18:20:00 to 21-MAY-13 18:20:00 (CST-6)
Location: COTTON VLY
Magnitude: 54.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees were downed across the entire parish.

Thunderstorm Wind in BOSSIER, LOUISIANA
From 21-MAY-13 18:25:00 to 21-MAY-13 18:25:00 (CST-6)
Location: CAPLIS
Magnitude: 54.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Trees were downed in Taylortown, Louisiana along Hwy. 71.

Thunderstorm Wind in WEBSTER, LOUISIANA
From 21-MAY-13 18:30:00 to 21-MAY-13 18:30:00 (CST-6)
Location: MINDEN
Magnitude: 54.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A utility pole was snapped in half in the Beaver Creek Subdivision.

Thunderstorm Wind in CADDO, LOUISIANA
From 21-MAY-13 18:34:00 to 21-MAY-13 18:34:00 (CST-6)
Location: JEWELLA
Magnitude: 53.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: NWS Employee

A tree was on a home in Green Terrace in Southwest Shreveport.

Thunderstorm Wind in CADDO, LOUISIANA
From 21-MAY-13 18:55:00 to 21-MAY-13 18:55:00 (CST-6)
Location: JEWELLA
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Another tree was reported to be downed near Crabapple in Southern Hills portion of south Shreveport.

Thunderstorm Wind in SABINE, LOUISIANA
From 21-MAY-13 19:11:00 to 21-MAY-13 19:11:00 (CST-6)
Location: CONVERSE
Magnitude: 53.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees were downed in Converse, Louisiana.

Thunderstorm Wind in BIENVILLE, LOUISIANA
From 21-MAY-13 19:15:00 to 21-MAY-13 19:15:00 (CST-6)
Location: GIBSLAND
Magnitude: 54.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees were downed in Gibsland, Louisiana.

Thunderstorm Wind in RED RIVER, LOUISIANA
From 21-MAY-13 19:15:00 to 21-MAY-13 19:15:00 (CST-6)
Location: COUSHATTA
Magnitude: 54.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several trees were downed throughout the entire parish.

Thunderstorm Wind in NATCHITOCHES, LOUISIANA
From 21-MAY-13 19:15:00 to 21-MAY-13 19:15:00 (CST-6)
Location: OSHKOSH
Magnitude: 54.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees were downed northeast of Campti, Louisiana.

Thunderstorm Wind in SABINE, LOUISIANA
From 21-MAY-13 19:20:00 to 21-MAY-13 19:20:00 (CST-6)
Location: BELMONT
Magnitude: 54.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A utility pole was snapped northeast of Zwolle, Louisiana.

Thunderstorm Wind in WINN, LOUISIANA
From 21-MAY-13 19:45:00 to 21-MAY-13 19:45:00 (CST-6)
Location: DODSON
Magnitude: 55.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Public

A tree was downed on a home in Dodson, Louisiana.  There were no reports of injuries.

Thunderstorm Wind in LINCOLN, LOUISIANA
From 21-MAY-13 19:30:00 to 21-MAY-13 19:30:00 (CST-6)
Location: SIMSBORO
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees were downed throughout the entire parish.

Thunderstorm Wind in JACKSON, LOUISIANA
From 21-MAY-13 20:00:00 to 21-MAY-13 20:00:00 (CST-6)
Location: JONESBORO
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous trees were downed throughout the entire parish.

Thunderstorm Wind in WINN, LOUISIANA
From 21-MAY-13 20:05:00 to 21-MAY-13 20:05:00 (CST-6)
Location: WINNFIELD
Magnitude: 54.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous trees were downed throughout the entire parish.

Thunderstorm Wind in OUACHITA, LOUISIANA
From 21-MAY-13 20:15:00 to 21-MAY-13 20:15:00 (CST-6)
Location: LAKESHORE
Magnitude: 54.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees and powerlines were downed throughout the entire parish.

Thunderstorm Wind in CALDWELL, LOUISIANA
From 21-MAY-13 20:43:00 to 21-MAY-13 20:43:00 (CST-6)
Location: COLUMBIA
Magnitude: 53.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees were downed throughout the entire parish.

Thunderstorm Wind in GRANT, LOUISIANA
From 21-MAY-13 21:10:00 to 21-MAY-13 21:10:00 (CST-6)
Location: POLLOCK
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A large tree was downed in Pollock, Louisiana.

Thunderstorm Wind in CLAIBORNE, LOUISIANA
From 21-MAY-13 19:30:00 to 21-MAY-13 19:30:00 (CST-6)
Location: ATHENS
Magnitude: 54.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees were downed in Athens, Louisiana.