Sign up for TPR Today, Texas Public Radio's newsletter that brings our top stories to your inbox each morning.
This story has been updated.
A flood watch remains in effect until 7 p.m. Friday for San Antonio, portions of the Hill Country and much of South Central Texas. The National Weather Service said an additional 1 to 4 inches of rain is possible across much of the region, with locally higher amounts possible.
The National Weather Service said there is potential for life-threatening flooding somewhere in the watch area, with rivers, creeks, streams, urban areas and low-water crossings all susceptible to flooding.
In San Antonio, showers and thunderstorms are expected through Friday morning, with some storms producing heavy rainfall. The National Weather Service forecasts 1 to 2 inches of additional rain overnight, followed by another half inch to three-quarters of an inch Friday.
Radar Update: A broken line of nearly stationary storms have developed along US HWY 281. We expect to see this line drift to the west as the day progresses. Given the rainfall from yesterday, ponding on roads and minor flooding of flood prone areas is possible. pic.twitter.com/VUtBh1VbNI
— NWS Austin/San Antonio (@NWSSanAntonio) October 2, 2026
A flash flood warning was issued for Bexar, northern Atascosa and western Wilson counties Thursday afternoon as thunderstorms produced heavy rain. Flooding forced some roads and low-water crossings to close in the San Antonio area. Motorists are urged not to drive around barricades or attempt to cross flooded roads.
Emily Heller is a meteorologist with the National Weather Service. She said 1 to 3 inches of rain could still fall in the area today.
“We are expecting some redevelopment this morning that can continue into the afternoon and possibly even into the evening," said Heller. "But this should be more scattered or isolated instances of rain.”
The area received a good dousing Thursday after an unseasonably hot and dry end-of-September. "On average, most locations in Bexar County received at least an inch, most around 2.5, and then there are some isolated amounts maybe up to 4 inches within the county," said Heller.
Earlier Thursday, flash flood warnings were issued for portions of Bandera, Gillespie, Kerr and Real counties as the remnants of Hurricane Polo interacted with a cold front moving across Texas. Rainfall rates of several inches an hour were reported in some areas.
In Kerr County, officials closed several low-water crossings and streets as heavy rain moved through the area. Most had reopened by midday.
Flooding also forced the closure of U.S. 377 south of Junction early Thursday.
A flood warning is in effect for the Llano River at Llano through Friday evening, with moderate flooding forecast. Other rivers, creeks and tributaries that received heavy rain Thursday could also rise.
San Antonio police and public works crews are prepared to barricade flooded roads. Residents can find information about flooded road closures at bexarflood.org. Downed tree limbs and malfunctioning traffic signals should be reported to 311.
City officials said homeless outreach teams began contacting people earlier this week to encourage them to move away from low-lying areas following deaths during flooding earlier this summer.
The cold front is also bringing cooler temperatures to San Antonio, with highs around 80 degrees Friday.
Rain chances continue through the weekend before drier conditions arrive early next week. "There is still a lot of moisture in the atmosphere. So, rain chances actually do continue Saturday and Sunday, though we are expecting lighter rain amounts," said Heller. "Maybe not that heavy rain potential, but still, rain in general.”
The forecast for Monday brings lower rain chances and fall temperatures, with highs in the lower 80s and lows in the upper 60s. More seasonably fall-like days will follow the rest of the work week.
The cold front is headed to the Texas coast, where it was expected to stall.
