Early on the 3rd, clusters of severe storms evolved into a line which produced scattered wind damage as it pushed east along and just north of I-20. An outflow boundary pushed out of this line and provided the focus for the second powerful and significant severe event.
Between 8 am and 1 pm, a Derecho evolved and raced east across the southern half of the forecast area at 60 to 70 mph. A Derecho is defined as a ling lived windstorm, usually a large bow echo, which has a width of 40 to 250 miles and covers a long distance, typically one to three states. This large bowing squall line brought intense straight line winds and widespread damage across its swath. Some of the wind speeds within this Derecho ranged between 80 and 95 mph. There were numerous reports of trees down as well as downed power lines, which caused widespread power outages in many locations. Many structures were damaged by either fallen trees or just the wind itself. Scattered reports of hail and a few tornadoes also occurred. One fatality occurred in Jones County as a tree fell through a woman���s mobile home.

Thunderstorm Wind in CATAHOULA, LOUISIANA
From 03-MAY-09 08:16:00 to 03-MAY-09 08:24:00 (CST-6)
Location: ARCHIE
Magnitude: 65.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Many trees and power lines were blown down just south of Jonesville, some of which were down across Highway 124.

Hail in CATAHOULA, LOUISIANA
From 03-MAY-09 07:33:00 to 03-MAY-09 08:10:00 (CST-6)
Location: AIMWELL
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A swath of penny to quarter sized hail crossed the northern portion of the county.

Thunderstorm Wind in TENSAS, LOUISIANA
From 03-MAY-09 08:38:00 to 03-MAY-09 08:40:00 (CST-6)
Location: ST JOSEPH
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Public

Several large limbs were down around Lake Bruin State Park.

Thunderstorm Wind in FRANKLIN, LOUISIANA
From 03-MAY-09 08:00:00 to 03-MAY-09 08:00:00 (CST-6)
Location: WISNER
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 3.00K
Reported by: Public

Large limbs were knocked down around Wisner. New corn crops had leaned as a result of the strong winds.

Thunderstorm Wind in TENSAS, LOUISIANA
From 03-MAY-09 08:35:00 to 03-MAY-09 08:50:00 (CST-6)
Location: WATERPROOF
Magnitude: 65.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Downed trees were spotted near Waterproof. Several trees had blown down and the tin was blown off the roof of a business around St Joseph.

Tornado in CATAHOULA, LOUISIANA
From 03-MAY-09 07:51:00 to 03-MAY-09 07:55:00 (CST-6)
Location: LELAND
Tornado F-scale: EF0
Property damage: 1.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A narrow tornado downed a number of trees along its path. This weak tornado downed a large tree across the access road to Sicily Island Wildlife Management Area near the start of the path. Other downed trees were across State Highway 913, just before the tornado dissipated. Maximum winds were around 70 mph.

Thunderstorm Wind in CATAHOULA, LOUISIANA
From 03-MAY-09 08:13:00 to 03-MAY-09 08:27:00 (CST-6)
Location: MANIFEST
Magnitude: 70.00 EG
Property damage: 70.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorms caused widespread downed power lines and trees across the parish. Downed trees was observed in the Sandy Lake community, between Jonesville and Harrisonburg.

Thunderstorm Wind in CONCORDIA, LOUISIANA
From 03-MAY-09 08:28:00 to 03-MAY-09 08:43:00 (CST-6)
Location: MORA
Magnitude: 65.00 EG
Property damage: 13.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Numerous downed trees observed between Vidalia and Ferriday and across central portions of the parish.

Thunderstorm Wind in CONCORDIA, LOUISIANA
From 03-MAY-09 08:34:00 to 03-MAY-09 08:41:00 (CST-6)
Location: CONCORDIA JCT
Magnitude: 65.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorms downed numerous trees around Ferriday.