Oct 30, 2015
An upper level trough slid across the southwestern U.S. and northern Mexico inducing an intensifying surface and low level low pressure trough and increasing southerly flow bringing deep tropical moisture to the area. Thunderstorms developed over northern Mexico and turned into a mesoscale convective system over Brownsville and moved north over Willacy County dropping another two to four inches of rain fell across already saturated grounds. This additional rainfall led to more flash flooding for
Source: NOAA National Weather Service Storm Events Database (event 605984). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Willacy County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.