A flood watch is in effect for much of Central and South Texas, including the San Antonio metro area, with the National Weather Service warning residents to prepare for heavy rainfall and the risk of life-threatening flooding. The watch. Which began at 9 p.m; Thursday. Will remain in place through 9 p.m, and Friday, according to the National Weather Service, and the warning covers a wide area, including the Texas Hill Country, Interstate 35 corridor, and cities like New Braunfels, San Marcos, Austin, and Del Rio.

Heavy Rainfall and Flash Flood Risk

According to the National Weather Service, areas under the flood watch are expected to see between 2 to 4 inches of rain, with some areas potentially receiving up to 6 inches. The greatest flood risk is in locations that receive higher rainfall totals, generally between 3 and 6 inches, as However, it is difficult to pinpoint exactly where the highest rainfall totals will occur.

Earlier in the day. A flash flood warning was issued for the San Antonio metro area and surrounding regions. The warning. Which was issued at 5:10 a.m. local time, was a direct response to the intensity of rainfall, which has the potential to cause rapid flooding in low-lying areas, rivers, and urban zones. According to the National Weather Service, flash floods can develop in just seconds and are particularly dangerous due to their speed and unpredictability.

Residents Urged to Stay Alert and Avoid Flooded Roads

Residents are being strongly advised to avoid unnecessary travel and to refrain from attempting to drive through flooded roads. The National Weather Service emphasized that water depth can be misleading and that strong currents can sweep away vehicles and people. In a statement, the agency warned of a potential for life-threatening flooding in the watch area, with excessive runoff expected to cause flooding of rivers, creeks, and streams.

Those who must travel are advised to slow down and exercise extreme caution. If a flash flood warning is issued, conditions can quickly become hazardous. The National Weather Service also reiterated that a flood watch does not mean flooding is currently occurring but that conditions are favorable for potential flooding over the next 24 hours.

Preparedness and Monitoring Resources

While the focus of the flood warning is in the United States, the German Federal Office of Civil Protection and Disaster Assistance offers guidance on preparedness through its warning app, NINA. While not relevant to the Texas situation, the app serves as an example of how real-time flood warnings can be delivered to the public. The app provides early information about dangerous situations—including floods—and is intended to supplement other precautionary measures.

Back in Texas, residents are encouraged to monitor updates from the National Weather Service and to remain alert for changes in the forecast. The Inter-State Flood Portal in Germany, which provides real-time data from flood gauges, serves as a model for similar systems that could support flood preparedness in the U.S. In the meantime, the key priority remains preserving life and minimizing the risks to the community as weather conditions continue to develop rapidly.