Sep 25, 2025
A heavy rainfall event across South Texas developed as a strong upper-level trough extended southward from the Great Lakes into Texas, providing large-scale ascent and enhanced positive vorticity advection. At the surface, a cold front pushed into the region and eventually stalled, serving as the main focus for lift while interacting with outflow boundaries from earlier convection. Ahead of the front, deep Gulf moisture surged northward with PWATs climbing to near or above the 99th percentile fo
Source: NOAA National Weather Service Storm Events Database (event 1288637). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Webb County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.