Texas is already seeing wet pavement and rising runoff this morning, and conditions are expected to deteriorate quickly as heavier rain bands expand across the Austin–San Antonio corridor.
According to the National Weather Service, a Flood Watch remains in effect through this evening, with multiple rounds of showers and thunderstorms producing 2 to 4 inches of rain, and isolated totals up to 6 inches possible in parts of San Antonio, Austin, New Braunfels, and San Marcos.
This is part of a broader system pulling deep Gulf moisture inland, fueling repeated storm development and increasing the risk of flash flooding across South Central Texas.
Impacts are already unfolding. Urban streets in San Antonio and Austin may flood within minutes during heavier downpours, especially near low-lying intersections, underpasses, and drainage-prone roads. Creeks and streams could rise quickly, with water overtopping banks in areas like the San Antonio River basin and along I-35 corridors. Visibility will drop sharply during bursts of rain, creating hazardous driving conditions.
Travel disruptions are likely. Drivers along I-35, Loop 410, and US-281 should expect water-covered roads and sudden slowdowns. Low-water crossings across rural and suburban areas remain especially dangerous, where fast-moving water can sweep vehicles away.
Avoid driving through flooded roadways and plan alternate routes if commuting today. Monitor local alerts closely as conditions can change within minutes.
Rain chances begin to taper later tonight, with a shift toward drier and warmer weather this weekend. Sunshine returns Saturday with highs near 73°F, followed by upper 70s Sunday and mid-80s by early next week. However, additional storm chances may redevelop by midweek.
The most dangerous flooding window will occur between 10 a.m. and 6 p.m. today, when repeated heavy rain bands are expected to peak.
