Aug 21, 2025
The local area was on the eastern periphery of an upper level ridge. A weak frontal boundary was slowly sagging in from the northeast due to the presence of an upper level trough along the east coast of the United States. Strong daytime heating combined with ample moisture in place and weak surface boundary convergence created an environment conducive for heavy rainfall and a few severe thunderstorms.
Source: NOAA National Weather Service Storm Events Database (event 1293002). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Terrebonne County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.