South Texas Flood Watch: Laredo, San Antonio, Eagle Pass Thru Friday

What happened

A South Texas flood watch now covers a big part of the I-35 corridor and the border. The National Weather Service (NWS) issued two watches late on Sept. 29, 2026.

The first watch comes from the NWS office in Austin and San Antonio. It runs from Wednesday evening through Friday evening. It covers 28 counties. That includes Bexar, Travis, Williamson, Hays, Comal and Guadalupe counties along I-35. It also covers Maverick, Val Verde, Kinney, Uvalde, Dimmit, Zavala, Frio and Atascosa counties. Towns named in the watch include San Antonio, Austin, New Braunfels, San Marcos, Seguin, Del Rio, Eagle Pass and Uvalde.

Forecasters there expect 2 to 4 inches of rain, with up to 8 inches in some spots. They warn of possible life-threatening flooding somewhere in the area. Creeks may rise out of their banks and low-water crossings may flood. A cold front is expected to spread storms across more of the area on Thursday.

The second watch comes from the NWS office in Corpus Christi. It runs from Thursday morning through Friday evening. It covers Webb County, where Laredo is, plus La Salle, McMullen, Live Oak, Bee, Duval, Jim Wells and inland Nueces, Kleberg and San Patricio counties.

What it means for owner-operators

This watch sits right on top of some of the busiest freight lanes in Texas. I-35 runs from Laredo through San Antonio to Austin. US 57 and US 277 serve Eagle Pass and Del Rio. I-37 and US 59 cross the Corpus Christi watch area.

Flooded roads are a real danger for big trucks. Water can hide a washed-out road. Moving water can push a loaded trailer off the pavement. Rural low-water crossings are the worst spots.

Floods also cost money. A flooded truck or a wet load can mean days off the road. Delays can mean missed appointments and angry customers. And a crash in bad weather can bring a claim that follows you for years.

What to do next

• Check the forecast and TxDOT closures at DriveTexas.org before you leave.
• Never drive into water covering the road. Turn around and find another way.
• Stay off rural roads with low-water crossings when rain is heavy.
• Slow down and leave more space. Wet roads need longer stopping distance.
• Park your truck and trailer on higher ground if your yard floods.
• Call your broker or shipper early if the weather will make you late. Get the new time in writing.
• Take photos of your truck and cargo before and after a storm. They help if you need to report damage.
• Not sure what your policy covers for weather damage? Read our guide on trucking insurance coverage explained and call us with questions.