Sep 4, 2023
Fueled by an abundance of moisture, a thunderstorm complex developed during peak heating over the Pearl River basin. Aided by a very weak steering flow, the complex moved very slowly over portions of urbanized areas such as Slidell and eventually metro New Orleans, where flash flooding occurred during the afternoon and evening. The complex finally weakened during the evening as it became cold-pool dominant.
Source: NOAA National Weather Service Storm Events Database (event 1142804). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Orleans County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.