Event narrative (NOAA)
Heavy rain fell on the 12th, 13th, and 14th and gradually drained into the Mermentau River. Interstate 10 became closed as the river flowed across the roadway from the end of the flash flood event on the 14th through the next few days while the river crested. At the town of Mermentau the river crested at 10.8 feet which was the 5th highest recorded crest. Flood stage is 4 feet. Many roadways and homes stayed flooded for multiple days as the water slowly drained after the flash flood event.
Other notable flood events in Louisiana
Source: NOAA/NCEI Storm Events Database. Deaths and injuries are those NOAA classifies as direct. Damage is the reporting office's estimate at the time and is not inflation-adjusted. This is a catalogue record, not a forecast.