Austin, TX – Residents across South-Central Texas are being urged to prepare for several days of dangerous weather as tropical moisture fuels repeated rounds of heavy rainfall, with the highest threat for life-threatening flash flooding expected through Thursday.
According to the National Weather Service in Austin-San Antonio, a Level 4 of 4 (High) Risk for excessive rainfall is in effect Tuesday for portions of the U.S. Highway 90 corridor west of San Antonio, including the southern Edwards Plateau and the Rio Grande Plains. Forecasters warn that these areas could experience considerable to locally catastrophic flash flooding.
The Weather Service said isolated locations in the highest-risk area could receive an additional 10 to 20 inches of rainfall, while many other parts of South-Central Texas may see 2 to 6 inches through the event. Elsewhere, a Level 2 (Slight) to Level 3 (Moderate) Risk of excessive rainfall remains in place.
Meteorologists expect the flooding threat to continue through Thursday, with multiple rounds of showers and thunderstorms capable of producing torrential rainfall, especially during the overnight and early morning hours.
Communities most at risk include portions of Edwards, Val Verde, Kinney, Maverick, Uvalde, Zavala, and surrounding counties, though flood concerns extend across much of the Austin-San Antonio forecast area.
The National Weather Service advises residents to monitor forecasts closely, have multiple ways to receive weather warnings, and avoid driving through flooded roadways. Campers and those with outdoor plans are encouraged to remain weather-aware as conditions can change rapidly.
Flash flooding can develop quickly, even in areas that have not experienced flooding earlier in the event, especially where repeated storms move over the same locations.
