Event narrative (NOAA)
Twelve to eighteen inches of rainfall over a 2 day period led to widespread flash flooding across the northwestern half of Tangipahoa Parish, details of which are contained in the flash flood report for the parish. As water drained into the local rivers, major to record flooding occurred along the Natalbany River. The entirety of Interstate 12 through Tangipahoa Parish was closed as flood crests on both the Tangipahoa and Natalbany Rivers pushed high water onto the roadway. The end time of the event is based on when the Natalbany River dropped below flood stage near Baptist. In all, 11,000 homes and businesses suffered various degrees of flooding throughout the parish, though it's difficult to determine how many were due to initial flash flooding and how many were due to subsequent river
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.