EF0 tornado in St. Bernard Parish, Louisiana

An EF0 tornado with winds of 85 MPH tracked north to south across Arabi, LA in St. Bernard Parish. This was confirmed via eyewitness videos, along with debris thrown to the SE and convergent debris in that direction. Almost all of the damage was shingles off well built homes, fence damage and large branches down. Three houses had a good part of their roof removed. Two were older houses, one built in the 50s. One house had a car port attached to the roof which is where the failure occurred. The third was abandoned and neighbors confirmed it also had extensive termite damage. That and rot was observed on the roof. Given that well built homes had minor damage and the damage on the three houses were from older roofs, the rating is an 85 MPH EF0.

A mesoscale convective system formed on the eastern side of Post-Tropical Storm Arthur on June 18th. Favorable low level winds allowed for multiple mini-supercells to form on the leading edge of the mesoscale convective system resulting in several tornadoes impacting the Houma and New Orleans metro areas. These tornadoes were rated as EF-0 and EF-1 events. Additionally, the mesoscale convective complex tapped into a region of deep tropical moisture with atmospheric moisture content well above normal levels for mid-June. This resulted in several significant flash flooding events in portions of the Houma and New Orleans metro areas including the cities of Houma, Kenner, and Slidell. Another area of heavy rainfall from thunderstorms formed over central Louisiana near the center of Post-Tropical Storm Arthur producing flash flooding in portions of Pointe Coupee Parish. Lingering moisture and weak upper level troughing associated with the slow moving remnants of Post-Tropical Storm Arthur produced additional thunderstorm activity on June 19th. This activity was focused in metro New Orleans where a brief EF-0 tornado developed in the community of Arabi. On June 20th, another band of thunderstorms developed along a lingering boundary stretching from coastal Louisiana toward New Orleans. This band of thunderstorms produced heavy rainfall and impacted portions of the Houma and New Orleans metro areas producing a few flash flooding events in Houma, Destrehan, and Kenner.