Low pressure moving along a cold front draped over southeast Louisiana and southern Mississippi developed a squall line of thunderstorms that moved through the area late on the night of the 19th into the early morning hours of the 20th. A second line of thunderstorms moved through the coastal waters hours during the morning of the 20th.

Hail in IBERVILLE, LOUISIANA
From 19-MAY-16 18:47:00 to 19-MAY-16 18:47:00 (CST-6)
Location: PLAQUEMINE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Quarter size hail was reported via social media in Plaquemine.

Lightning in ST. TAMMANY, LOUISIANA
From 19-MAY-16 23:30:00 to 19-MAY-16 23:30:00 (CST-6)
Location: MC CLANE CITY
Property damage: 300.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Lightning started a fire that destroyed one home and damaged another in the Masters Point Subdivision in Slidell.

Lightning in ST. BERNARD, LOUISIANA
From 20-MAY-16 00:40:00 to 20-MAY-16 00:40:00 (CST-6)
Location: VERSAILLES
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Lightning triggered a fire that damaged a home on Palmisano Boulevard in Chalmette.

Tornado in PLAQUEMINES, LOUISIANA
From 19-MAY-16 22:00:00 to 19-MAY-16 22:00:00 (CST-6)
Location: CEDAR GROVE
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Based on an eyewitness report, a large oak tree was twisted at the trunk. A 14 inch diameter pecan tree was twisted and toppled. Damage was confined to about one city block near the Mississippi River on E. St. Peters Street. Time estimated by radar. Damage was consistent with an EF-0 gustnado along the leading edge of a squall line with winds estimated at 75 mph.

Thunderstorm Wind in LAFOURCHE, LOUISIANA
From 19-MAY-16 21:02:00 to 19-MAY-16 21:02:00 (CST-6)
Location: LEIGHTON
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A tree was blown down and went through the roof of a home in a trailer park. About 10 trees were reported blown down across Lafourche Parish.

Thunderstorm Wind in ASSUMPTION, LOUISIANA
From 19-MAY-16 20:30:00 to 19-MAY-16 20:45:00 (CST-6)
Location: ELM HALL
Magnitude: 61.00 EG
Property damage: 100.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A line of thunderstorms tracked southwest to northeast along Louisiana Highway 401 producing a downburst. The storm survey found evidence of widespread straight line wind damage near 70 mph with isolated damage indicative of winds up to 100 mph. An unoccupied mobile home was rolled and destroyed along with large softwood and hardwood trees snapped or uprooted. Several homes had some damage to siding and roof shingles. Over 30 utility poles were blown down. The damage path was 14 miles long.

Thunderstorm Wind in ST. JAMES, LOUISIANA
From 19-MAY-16 21:03:00 to 19-MAY-16 21:03:00 (CST-6)
Location: CONVENT
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Trees were reported blown down on numerous roads and highways around Convent and Vacherie in St. James Parish. A roof was blown off a home in St. James. A RV was flipped and two others blown off jacks at the Sugar Hill RV Resort. The event time was estimated by radar.

Thunderstorm Wind in EAST BATON ROUGE, LOUISIANA
From 19-MAY-16 21:05:00 to 19-MAY-16 21:05:00 (CST-6)
Location: FOREMAN
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A tree was blown down on a home off of S. Peck Drive in south Baton Rouge. Report was relayed by social media.

Thunderstorm Wind in TERREBONNE, LOUISIANA
From 19-MAY-16 21:05:00 to 19-MAY-16 21:05:00 (CST-6)
Location: HOUMA
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Damage was reported throughout Terrebonne Parish. Power lines were reported down in Montegut. Trees were blown down in Houma, power lines were blown down and a carport damaged in Chauvin. Event time was estimated from radar.

Thunderstorm Wind in ASCENSION, LOUISIANA
From 19-MAY-16 21:17:00 to 19-MAY-16 21:17:00 (CST-6)
Location: SORRENTO
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Trees were reported blown down along US Highway 61 near Sorrento.

Thunderstorm Wind in EAST BATON ROUGE, LOUISIANA
From 19-MAY-16 21:20:00 to 19-MAY-16 21:25:00 (CST-6)
Location: WOODLAWN
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A line of storms produced severe straight line winds near 70 mph from south to north across the Shenandoah area along Jones Creek Road. Large trees were uprooted and there was roof shingle and gutter damage. Some windows and fast food signs were blown out. A small commercial building had large window panels blown out and sustained roof damage. The damage path was 4 miles long from near Airline Highway to Harrells Ferry Road.

Thunderstorm Wind in LAFOURCHE, LOUISIANA
From 19-MAY-16 21:20:00 to 19-MAY-16 21:20:00 (CST-6)
Location: JAY
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Trees and power lines were reported blown down along Louisiana Highway 308 near Valentine. The event time was estimated from radar.

Thunderstorm Wind in LIVINGSTON, LOUISIANA
From 19-MAY-16 21:20:00 to 19-MAY-16 21:20:00 (CST-6)
Location: DENHAM SPGS
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Trees were reported blown down along 4H Club Road in Denham Springs. Report was relayed by social media.

Thunderstorm Wind in ST. JOHN THE BAPTIST, LOUISIANA
From 19-MAY-16 21:25:00 to 19-MAY-16 21:25:00 (CST-6)
Location: MONTEGUT
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Power lines were reported blown down near East St. John High School.

Thunderstorm Wind in TANGIPAHOA, LOUISIANA
From 19-MAY-16 22:00:00 to 19-MAY-16 22:00:00 (CST-6)
Location: LEES LNDG
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Large limbs were reported blown down, as well as wood fences blown down and minor roof damage in Montgomery Terrace Subdivision off of Louisiana Highway 22.

Thunderstorm Wind in ST. TAMMANY, LOUISIANA
From 19-MAY-16 22:10:00 to 19-MAY-16 22:10:00 (CST-6)
Location: COVINGTON
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

A large tree was reported blown down on Lakeview Drive.

Thunderstorm Wind in ST. TAMMANY, LOUISIANA
From 19-MAY-16 22:15:00 to 19-MAY-16 22:15:00 (CST-6)
Location: COVINGTON
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A tree was reported blown down onto a car on G Street in Covington.

Thunderstorm Wind in EAST BATON ROUGE, LOUISIANA
From 19-MAY-16 21:30:00 to 19-MAY-16 21:30:00 (CST-6)
Location: INNISWOLD
Magnitude: 59.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A large tree was reported blown down and a personal weather station measured a 68 mph wind gust in the Shenandoah area of Baton Rouge.

Thunderstorm Wind in ST. TAMMANY, LOUISIANA
From 19-MAY-16 22:00:00 to 19-MAY-16 22:00:00 (CST-6)
Location: HOULTONVILLE
Magnitude: 60.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A large tree branch fell through the roof of a home in the Brewster Road area. No injuries were reported. Time estimated from radar.