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Flash Flood — Gregg, TX

Aug 29, 2025

Significant banding of heavy showers and thunderstorms with cell-training occurred on the morning of August 29th across East Texas and North Louisiana, posing the threat of flash flooding. A gradual increase in warm air advection and isentropic ascent was noted on the north side of a quasi-stationary frontal boundary and within a very moist and moderately unstable air mass. MUCAPE values ranged from 1000 to 2000 J/kg along the front from Deep East Texas into Central Louisiana. However, much of t

Source: NOAA National Weather Service Storm Events Database (event 1290814). Narrative written by NWS staff at the time of the event.

Flood Risk Context for Gregg, TX

This event is one of many recorded floods in Gregg County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.

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