The following events were reported: Flash Flood, Hail, Thunderstorm Wind, Tornado. These occurred near station USW00012916, approximately 25.3432 km away, between 2011-03-29 15:25:00 and 2011-03-29 20:00:00. The events included records with hailstones measuring 37.98684210526316 inches.Thankfully, no injuries or fatalities were reported. The events caused property damage valued at 362000.0 and crop damage of 0.0. Episode Narrative: Upper level disturbances moving over a very warm and unstable airmass produced numerous reports of severe weather, as well as isolated flash flooding. Upper level disturbances moving over a very warm and unstable airmass produced numerous reports of severe weather, as well as isolated flash flooding. Event Narrative: Broadcast media passed on a viewer report of at least quarter size hail with some larger hailstones mixed in. Emergency management received a report from the public of quarter size hail in Luling. A trained spotter reported quarter size hail just east of New Orleans International Airport. A trained spotter reported water approaching homes on Roosevelt Avenue south of the West Metairie Canal and the street was not passable. Widespread street flooding was also reported in the Airline Park subdivision. The Jefferson Parish Emergency Manager reported quarter size hail at the intersection of Manhattan Blvd and the Westbank Expressway. A trained spotter reported half dollar size hail in Marrero. The COOP observer in Terrytown measured a 60 mph wind gust. A tree was blown down onto a house on Hero Drive in Harvey. The greatest concentration of damage was in Gretna on Manhattan Blvd, where nearly 1.8 miles of hail and wind damage occurred. Over a mile of power lines were either snapped or pushed over by these winds. An awning was blown down at the Manhattan Place Shopping Center, which damaged several cars in the parking lot. A commercial building along Avenue A and Highway 23 was damaged. The front door was ripped off. Five employees toook shelter in a closet during the event. The Plaquemines Parish Government office measured a wind gust of 100 mph at the end of Avenue G and Main Street near Plaquemines Pride. A government building was damaged at 8056 Highway 23. Eight inches of water was covering Highway 23 south of Belle Chasse. Moderate to heavy street flooding occurred across northern Plaquemines Parish. Numerous streets were flooded around Harvey along Manhattan and Lapalco Boulevards. Two to three feet of water was reported on Gretna Blvd. Water was approaching, but not moving into, homes in this area. Received a public report of quarter size hail in Chalmette. Jefferson Parish Emergency Management reported water in 25 apartments in the 1600 block of Carol Sue in Terrytown. A gas station awning was heavily damaged and several power poles were blown down along Airline Highway. A nearby refinery recorded wind gusts of 70 mph before power failed. Several reports of hail were received ranging from penny and nickel size to golf ball size was reported from about 3 miles west of Laplace to the west and north portion of Laplace near the Interstate 10-Interstate 55 interchange. A weak EF0 tornado touched down with estimated winds of 65 mph. Tree limb damage was observed and a vehicle had its camper top torn off. The survey team found damage in the Edgard area consistent with a weak EF0 tornado and estimated winds of 65 mph. Large limbs were down, the corner of a roof lost shingles. Maximum path width of 50 yards, path length 250 yards. The Cooperative Observer in Terrytown reported quarter size hail covering his yard. Fifty power poles were snapped along Manhattan Blvd. Minor structural damage was observed on numerous buildings. The Walmart on Manhattan Blvd had major roof damage. Damage in Belle Chasse was in line with the storm in the Gretna area. Trees and power lines were blown down and structures received minor damage. A NWS Storm Survey showed straight line winds of 100 mph and were associated with a strong inflow notch radar signature. Golf ball size hail was reported along Highway 406 and Highway 23.