Jul 9, 2021
Early on the morning of July 9th, multiple rounds of storms associated with a slow-moving low pressure system developed and streamed northward across Cameron County. The repeated rounds of storms dropped 4 to more than 6 inches of rain in a 2 to 3 hour span across the Brownsville-Los Fresnos area, leading to many instances of flash flooding. Minor flooding was noted farther east in Port Isabel and South Padre Island.
Source: NOAA National Weather Service Storm Events Database (event 964433). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Cameron County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.