A northwest upper level flow regime was in place. This setup commonly supports summertime severe thunderstorms. This event was one of those days where very steep lapse rates and high shear values supported several severe thunderstorms with damaging wind and large hail.

Tornado in ST. CHARLES, LOUISIANA
From 20-JUN-23 15:00:00 to 20-JUN-23 15:07:00 (CST-6)
Location: BOUTTE
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A thunderstorm developed a vigorous mesovortex along a boundary over Lake Salvador just before 2100 UTC. This mesovortex intensified and tracked northwest into the Salvador Wildlife Management Area where a large tornado damage path was visible on high resolution satellite imagery. Widespread tree damage including swaths of uproots and snaps of softwood trees as well as ground scouring and rowing marks from the parent mesovortex were observed indicative of a significant tornado. KLIX radar imagery supports this approximate 4 mile track inland with a 40 knot rotational velocity and weak tornado debris signature evident to at least 4000 feet where the most severe damage was located midway along the path. Thereafter, the tornado path gradually narrowed and weakened and its estimated the tornado dissipated around 21:07 UTC. A ground survey was later performed to assess the highest end damage from this tornado which confirmed the existence of several snapped bald cypress trees.

Hail in LIVINGSTON, LOUISIANA
From 20-JUN-23 01:00:00 to 20-JUN-23 01:00:00 (CST-6)
Location: ALBANY
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Broadcast media relayed a picture of golfball sized hail near Albany.

Hail in ST. CHARLES, LOUISIANA
From 20-JUN-23 15:30:00 to 20-JUN-23 15:30:00 (CST-6)
Location: DES ALLEMANDS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Media Tweet showed picture of Public reporting quarter sized hail.

Flash Flood in ST. TAMMANY, LOUISIANA
From 19-JUN-23 21:18:00 to 19-JUN-23 23:18:00 (CST-6)
Location: SLIDELL
Flood cause: Heavy Rain
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Cars stalled in flood water on Gause Boulevard in front of Hobby Lobby.

Hail in ST. CHARLES, LOUISIANA
From 20-JUN-23 00:10:00 to 20-JUN-23 00:10:00 (CST-6)
Location: GYPSY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Quarter size hail in Montz relayed via social media.

Hail in ST. CHARLES, LOUISIANA
From 20-JUN-23 00:10:00 to 20-JUN-23 00:10:00 (CST-6)
Location: NORCO
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Skywarn spotter reported golf ball sized hail.

Hail in JEFFERSON, LOUISIANA
From 19-JUN-23 23:38:00 to 19-JUN-23 23:38:00 (CST-6)
Location: (MSY)MOISANT FLD NEW
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Report of quarter sized hail from mPING.

Hail in JEFFERSON, LOUISIANA
From 19-JUN-23 23:40:00 to 19-JUN-23 23:40:00 (CST-6)
Location: MOISANT ARPT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Report of quarter sized hail from mPING.

Thunderstorm Wind in ST. TAMMANY, LOUISIANA
From 19-JUN-23 20:54:00 to 19-JUN-23 20:54:00 (CST-6)
Location: OAKLAWN
Magnitude: 52.00 EG
Property damage: 1.50K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Tree down on a mobile home.

Thunderstorm Wind in ST. JAMES, LOUISIANA
From 20-JUN-23 16:15:00 to 20-JUN-23 16:15:00 (CST-6)
Location: CONVENT
Magnitude: 52.00 EG
Property damage: 6.00K
Crop damage: 0.00K
Reported by: Emergency Manager

EM Reports trees and powerlines down in Convent and Vacherie area from likely downburst winds. 1100 customers lost power. Time estimated and matched with radar.

Thunderstorm Wind in ORLEANS, LOUISIANA
From 19-JUN-23 20:08:00 to 19-JUN-23 20:08:00 (CST-6)
Location: MICHEND
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Mesonet station XBYU Bayou Bienvenue (Vertical Lift).

Thunderstorm Wind in ORLEANS, LOUISIANA
From 19-JUN-23 20:38:00 to 19-JUN-23 20:38:00 (CST-6)
Location: MICHEND
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Mesonet station XBYU Bayou Bienvenue (Vertical Lift).

Thunderstorm Wind in ST. BERNARD, LOUISIANA
From 19-JUN-23 21:24:00 to 19-JUN-23 21:24:00 (CST-6)
Location: SHELL BEACH
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

Buoy station at Shell Beach, LA.

Hail in ASSUMPTION, LOUISIANA
From 20-JUN-23 17:09:00 to 20-JUN-23 17:09:00 (CST-6)
Location: LABADIEVILLE
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Golf ball hail reported in Labedieville. Relayed via social media.

Hail in PLAQUEMINES, LOUISIANA
From 20-JUN-23 14:18:00 to 20-JUN-23 14:18:00 (CST-6)
Location: NAOMI
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Quarter size hail in the Jesuit Bend area. Event time estimated by radar.

Hail in ASSUMPTION, LOUISIANA
From 20-JUN-23 17:09:00 to 20-JUN-23 17:09:00 (CST-6)
Location: LABADIEVILLE
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Picture of hail at least 2 inches in diameter, possibly larger, in Labadieville. Relayed via social media.

Hail in WEST BATON ROUGE, LOUISIANA
From 20-JUN-23 16:30:00 to 20-JUN-23 16:30:00 (CST-6)
Location: ADDIS
Magnitude: 2.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Hail 2 to 2.25 in the town of Addis. Relayed via social media.

Hail in EAST BATON ROUGE, LOUISIANA
From 20-JUN-23 16:28:00 to 20-JUN-23 16:28:00 (CST-6)
Location: UNIVERSITY
Magnitude: 3.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Hail stone measured around 3.25 inches after some melting in the Riverbend area. Relayed via social media.

Hail in EAST BATON ROUGE, LOUISIANA
From 20-JUN-23 16:27:00 to 20-JUN-23 16:27:00 (CST-6)
Location: UNIVERSITY
Magnitude: 3.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Picture of hail measured to 3.75 inches. Relayed through social media.

Hail in EAST BATON ROUGE, LOUISIANA
From 20-JUN-23 16:27:00 to 20-JUN-23 16:27:00 (CST-6)
Location: UNIVERSITY
Magnitude: 3.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Numerous reports and pictures of hail 2.5 to 3 around the Riverbend subdivision. Relayed via social media.

Hail in WEST BATON ROUGE, LOUISIANA
From 20-JUN-23 16:20:00 to 20-JUN-23 16:20:00 (CST-6)
Location: OINCLARE
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Hail 2 to 2.25 inches in diameter near Brusly. Relayed via social media.

Hail in EAST BATON ROUGE, LOUISIANA
From 20-JUN-23 16:25:00 to 20-JUN-23 16:25:00 (CST-6)
Location: UNIVERSITY
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Larger than golf ball hail reported around the Riverbend area. Relayed via social media.

Hail in WEST BATON ROUGE, LOUISIANA
From 20-JUN-23 16:22:00 to 20-JUN-23 16:22:00 (CST-6)
Location: UNIVERSITY
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Golfball sized hail reported by public.

Hail in LAFOURCHE, LOUISIANA
From 20-JUN-23 15:48:00 to 20-JUN-23 15:48:00 (CST-6)
Location: CHEGBY
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Large Hail Reported by public via social media near Kraemer.

Hail in LAFOURCHE, LOUISIANA
From 20-JUN-23 15:28:00 to 20-JUN-23 15:28:00 (CST-6)
Location: BAYOU BOEUF
Magnitude: 3.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Multiple reports and pictures of large hail possibly up to softball size near the community of Kraemer. Relayed via social media.

Hail in EAST BATON ROUGE, LOUISIANA
From 20-JUN-23 16:27:00 to 20-JUN-23 16:27:00 (CST-6)
Location: UNIVERSITY
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Reported by public through social media south of Baton Rouge.