Flash Flood — Guadalupe, Texas

2025-07-05 · near Sullivan, Guadalupe, Texas

Event narrative

Thunderstorms produced heavy rain while slowly moving west across Guadalupe County. Rainfall totals of 4 to 7 inches were recorded with radar estimated totals as high as 9 inches in the Seguin area. The high rain rates caused flash flooding of low-lying and poor drainage areas, leading to at least a dozen water rescues and numerous road closures throughout the city and along I-10. Rapid rises were reported along Walnut and Geronimo Creek. 3 businesses and 2 homes were flooded with 6 to 12 inches of water. The worst flooding was experienced along US-90 Alternate where widespread inundation was observed. Several city parks and recreational facilities sustained damage. Flooding caused at least $2.5 million in damage to public infrastructure.

Wider weather episode

Precipitable water values over South-Central Texas remained near record levels, and a mid-level anticyclonic circulation continued over Central Texas providing lift to generate thunderstorms. These storms were efficient rain making storms leading to another night of excessive rainfall. Parts of Burnet and Travis Counties received 12-16 inches of rain in approximately six hours that led to deadly flash flooding. Eighteen people died in flood waters: four in Burnet County, ten in Travis, and four in Williamson. The Travis County Emergency Manager estimated the cost of damage to public property and infrastructure at $5 million. The Burnet County Emergency Manager estimated the cost of damage to public property and infrastructure at $6 million. The Williamson County Emergency Manager estimated the cost of damage to public property and infrastructure at $25 million.

View location on OpenStreetMap → (29.6851, -97.7476)

Source: NOAA Storm Events Database, event_id 1288010. Narrative written by the NWS forecast office that issued the report.