Texas Severe Flood Warning | Effective 07/17/2026 23:41

Headline: 
Flood Warning issued July 18 at 1:41AM CDT until July 21 at 11:48PM CDT by NWS Austin/San Antonio TX
Event: 
Flood Warning
Urgency: 
Immediate
Effective: 
July 17, 2026 - 11:41pm
Expires: 
July 18, 2026 - 5:45pm
Description: 
...The Flood Warning is extended for the following rivers in Texas... Frio River Near Derby affecting Frio County. * WHAT...Major flooding is occurring and major flooding is forecast. * WHERE...Frio River near Derby. * WHEN...Until late Tuesday evening. * ADDITIONAL DETAILS... - At 12:30 AM CDT Saturday the stage was 19.0 feet. - Bankfull stage is 6.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 12:30 AM CDT Saturday was 19.0 feet. - Forecast...The river is expected to rise to a crest of 21.8 feet this afternoon. It will then fall below flood stage late Tuesday morning. - Flood stage is 6.0 feet. - Flood History...This crest compares to a previous crest of 21.8 feet on 06/24/1997. - http://www.weather.gov/safety/flood
Instruction: 
Be especially cautious at night when it is harder to recognize the dangers of flooding. Flooding is occurring or is imminent. Most flood related deaths occur in automobiles. Do not attempt to cross water covered bridges, dips, or low water crossings. Never try to cross a flowing stream, even a small one, on foot. To escape rising water find another route over higher ground. Motorists should not attempt to drive around barricades or drive cars through flooded areas. Additional information is available at www.weather.gov. The next statement will be issued this evening by 745 PM CDT.
Area Description: 
Frio, TX
Forcast Office: 
NWS Austin/San Antonio TX