Strong low pressure moved across southern Louisiana and southern Mississippi during the midday hours. Several long track supercell thunderstorms moved across the area ahead of the low pressure. Numerous reports of severe weather were received.

Thunderstorm Wind in ST. TAMMANY, LOUISIANA
From 18-FEB-12 12:12:00 to 18-FEB-12 12:12:00 (CST-6)
Location: ABITA SPGS
Magnitude: 52.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS survey was conducted in Abita Springs. Damage is mainly confined to trees and power lines blown down, all in one direction. Damage is widespread and lacks a clear path. Survey results show thunderstorm straight line wind damage.

Thunderstorm Wind in TANGIPAHOA, LOUISIANA
From 18-FEB-12 11:40:00 to 18-FEB-12 11:40:00 (CST-6)
Location: ROBERT
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several trees were blown down in Robert. Event time was estimated based on radar.

Thunderstorm Wind in IBERVILLE, LOUISIANA
From 18-FEB-12 10:20:00 to 18-FEB-12 10:20:00 (CST-6)
Location: GROSSE TETE
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A tree and several power lines were blown down in Grosse Tete.

Thunderstorm Wind in IBERVILLE, LOUISIANA
From 18-FEB-12 10:40:00 to 18-FEB-12 10:40:00 (CST-6)
Location: ST GABRIEL
Magnitude: 52.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A tree was blown down in the St. Gabriel area.

Hail in WEST BATON ROUGE, LOUISIANA
From 18-FEB-12 10:35:00 to 18-FEB-12 10:35:00 (CST-6)
Location: PORT ALLEN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Nickel to quarter size hail was observed by West Baton Rouge Sheriffs deputies in Port Allen.

Thunderstorm Wind in TANGIPAHOA, LOUISIANA
From 18-FEB-12 11:35:00 to 18-FEB-12 11:35:00 (CST-6)
Location: PONCHATOULA
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several trees were blown down in Ponchatoula. Event time was estimated based on radar.

Thunderstorm Wind in LIVINGSTON, LOUISIANA
From 18-FEB-12 11:10:00 to 18-FEB-12 11:10:00 (CST-6)
Location: PORT VINCENT
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Livingston Parish Sheriffs office reported several trees were blown down in the southwest portion of the parish in the vicinity of Highway 16 and Highway 1033.

Thunderstorm Wind in ST. TAMMANY, LOUISIANA
From 18-FEB-12 12:15:00 to 18-FEB-12 12:15:00 (CST-6)
Location: ABITA SPGS
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Several trees were blown down onto cars in the vicinity of Green Street north of Abita Springs.

Thunderstorm Wind in ST. TAMMANY, LOUISIANA
From 18-FEB-12 12:15:00 to 18-FEB-12 12:15:00 (CST-6)
Location: ABITA SPGS
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

St. Tammany Sheriffs office reported several trees were blown down in the northeast portion of the parish from north of Covington to near Bush.

Flash Flood in ST. TAMMANY, LOUISIANA
From 18-FEB-12 14:55:00 to 18-FEB-12 15:30:00 (CST-6)
Location: SLIDELL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several roads were closed due to high water in downtown Slidell.