The National Weather Service confirms an EF-1 tornado hit Kenner, Louisiana on Wednesday, uprooting trees and ripping roof shingles off homes.
No injuries were reported, but about 5,000 customers lost power at the height of the storm.
Officials say over 70 mm of rain fell in less than 30 minutes, quickly flooding streets in the area. Wind gusts topping 140 km/h were also reported.
This was one of two tornadoes reported in the state as a line of wicked storms rolled through the region.
The second, weaker tornado hit the community of Metairie, where several reports of minor damage were received.
The American Red Cross dispatched relief trucks stocked with snacks, clean-up kits and tarps for those impacted by the severe weather.
With files from CNN