Webinar on Heavy Rainfall and Flooding Threat for This Week - September 30, 2026

Watch our September 30, 2026, webinar regarding the heavy rainfall and flooding threat for South-Central Texas this week. A new webinar will be available around midday on Thursday. Read More >

Click a location below for detailed forecast.

Last Map Update: Thu, Oct 1, 2026 at 11:40:17 am CDT

Watches, Warnings & Advisories

National Weather Service Fort Worth/Dallas, TX

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National Weather Service Houston/Galveston, TX

National Weather Service Brownsville/Rio Grande Valley, TX

National Weather Service Corpus Christi, TX

Flood Warning

Flood Advisory

Flood Watch

Forecast Rainfall Amounts

Timing of Rain and Storms

Heavy Rainfall and Flash Flooding

Be Prepared for Potential Flooding

A Flood Watch has been issued which includes much of South Central Texas from 7 PM today through 7 PM Friday. A cold front with combined tropical moisture will bring periods of heavy rainfall which could lead to life-threatening flash flooding. Stay weather aware and have multiple ways to receive warnings.

Projected rainfall through Friday ranges from 1 to 4 inches across most of South Central Texas, with 4 to 6 inches across the Hill Country and Winter Garden regions (including Kerrville and Uvalde) and isolated pockets of 6 to 8 inches. Flood safety precautions: Never drive through flooded roads—turn around, don't drown. Stay clear of low-lying areas, creeks, and streams. Exercise extra caution at night when flood hazards are harder to see.

Heavy rain is the primary hazard as a line of storms moves across the region today through Friday morning. Storms are underway across the Southern Edwards Plateau and portions of the Hill Country through early afternoon. Arrival in central areas, including Austin and San Antonio, begins as early as 9 AM, with the most likely timing from 11 AM into tonight. Eastern areas see storms arriving starting around 1 PM, with main impacts from 3 PM into tonight. Storm redevelopment may persist across central and eastern zones into Friday morning.

Chances for heavy rain and flash flooding are highest Today into Friday. Widespread rainfall amounts of 1 to 4 inches with isolated higher amounts up to 8 inches are possible. Monitor trusted sources for forecast updates, and do not try to cross flooded roadways; turn around don't drown.

The heavy rain this week could cause some flooding. Flooding can occur during any time of the year, so it’s always best to be prepared! To learn more about flooding and how you can prepare before it happens, visit weather.gov/safety/flood