South Texas flooding has stranded motorists and washed out highways after heavy rains dumped up to 16 inches in rural areas near the border with Mexico, with forecasters warning of more dangerous weather ahead. Emergency crews have conducted at least two dozen rescues across the region, and officials shut down parts of a highway near Uvalde, 80 miles west of San Antonio. The National Weather Service has issued a flash flood warning for the San Antonio area, with torrential downpours expected through the afternoon.
What Caused the South Texas Flooding?
Meteorologist Monte Oaks of the weather service described the event as a “typical mid-summer tropical weather pattern” that occurs in Texas about once every five years. A stagnant low-pressure center is producing a daily recurrence of heavy rain chances. Most areas of the San Antonio metro area are forecast to get between 2 and 4 inches of rain, while central Texas, including the Hill Country and Kerrville, remains at moderate risk of flash flooding.
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Flash Flood Warning and Risk Levels
The National Weather Service has upgraded parts of the region to a rare level 4 “high” risk of excessive rainfall, indicating that flash flooding is likely. Rainfall totals between 3 and 7 inches are expected, with isolated higher totals of up to 15 inches possible. “Intense rain rates and compounding effects from multiple rounds of storms will result in a dangerous flash flooding threat through Thursday,” the National Weather Service warned.
Comparison: Current Flooding vs. 2021 Guadalupe River Disaster
| Aspect | Current South Texas Flooding (2025) | 2021 Guadalupe River Flooding |
|---|---|---|
| Rainfall Totals | Up to 16 inches in rural areas | Over 12 inches in some areas |
| Risk Level | Level 4 “high” risk | Level 3 “moderate” risk |
| Fatalities | None reported yet | 139 deaths |
| Rescues | At least two dozen | Hundreds |
Key Takeaways for Residents
- Avoid driving through flooded roads – Turn around, don’t drown.
- Stay updated with flash flood warnings from the National Weather Service.
- Prepare an emergency kit with water, food, and medications.
- Know your evacuation route and have a family communication plan.
- Monitor rainfall totals and river levels in your area.
FAQ
What areas are at highest risk for South Texas flooding?
Areas west of San Antonio, including Uvalde and the Hill Country, are at the highest risk. The National Weather Service has issued a rare level 4 “high” risk for excessive rainfall in these regions.
How long will the flooding last?
The flash flooding threat is expected to continue through Thursday, with multiple rounds of storms producing heavy rain. Rainfall totals could reach up to 15 inches in isolated areas.
What should I do if I encounter flooded roads?
Never drive through flooded roads. Just six inches of moving water can knock you down, and one foot of water can sweep away a vehicle. Turn around and find an alternate route.
As South Texas braces for more rain, residents are urged to stay vigilant and follow all official warnings. The combination of saturated ground and continued downpours creates a dangerous flash flooding threat that could impact lives and property. Stay safe and monitor local weather updates closely.
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