Flood Watch in Effect as Slow-Moving Storms Target San Antonio

SAN ANTONIO, Aug. 31, 2025 - A Flood Watch issued by the National Weather Service took effect at noon Sunday for Bexar County and much of South-Central Texas as a stationary boundary stalls over the region, setting the stage for slow-moving thunderstorms capable of producing torrential downpours and gusty winds.

Early this afternoon, a new storm complex tracking southeast from Blanco toward New Braunfels and San Antonio brought wind gusts up to 60 mph and periods of heavy rainfall. Radar showed cells lining up along U.S. 281 and Highway 90, with storm motion slowing as the boundary began to lift northward over the metro area.

Weather officials warned of rainfall amounts of 2 to 4 inches across San Antonio, with isolated pockets of up to 8 inches where storms train over the same neighborhoods. Flash flooding of streets and low-lying areas is possible, especially in the Hill Country outskirts and along creeks prone to rapid rises.

High temperatures reached the mid-90s under humid, sun-cloud mixes this morning, briefly dipping during heavier rain. Winds out of the east at 6 to 12 mph will shift northeast tonight, maintaining the risk for additional nocturnal thunderstorms.

Residents are urged to monitor weather alerts via official apps, keep an emergency plan ready, and avoid driving through flooded roadways. The Flood Watch remains in effect through noon Monday as showers persist overnight and into the Labor Day holiday morning.