Storm Chances Expand Across Texas as Tropical Moisture and Outflow Boundary Collide

Written on 08/12/2025
David Reimer

Happy Tuesday, Texas! Mother Nature is mixing up some interesting weather today as tropical moisture from the Gulf teams up with an outflow boundary from earlier storms. The result? A good chance many of us will be dodging raindrops and lightning bolts before the day is done.

Today’s Setup

We expect the most numerous storm activity to develop during the afternoon hours, thanks to peak daytime heating. The combination of moisture and lift will fire up scattered to numerous showers and thunderstorms across much of the state, especially south of Interstate 20. While the storms will start to fade this evening and overnight, don’t be surprised if a few linger past sunset.

Wednesday’s Round Two

The focus shifts slightly on Wednesday, with more storm activity likely across the southern half of Texas and into East Texas. Timing looks similar — mostly in the afternoon and early evening — but exact coverage will depend on where today’s leftover boundaries end up.

Storm Hazards

The most intense storms over the next two days will be capable of:

  • Dangerous cloud-to-ground lightning — a reminder that lightning can strike miles away from the rain.

  • Localized intense rainfall — quick downpours could lead to brief street flooding.

  • Strong winds — isolated damaging gusts are possible.

  • Hail — generally small, but stronger updrafts could produce pockets of larger hail.

When thunder roars, get your kiester indoors — your hair will thank you, and so will your insurance company.

Tropical Storm Erin Update

Out in the Atlantic, Tropical Storm Erin is quickly moving west. Right now, there’s no threat to Texas, but we’re keeping an eye on it in case the track shifts. We’ll have updates if anything changes, but for now, it’s more of a “watch and learn” situation than a “board up the windows” scenario.

Temperatures

Outside of the rain-cooled areas, temperatures will remain seasonably hot for August. Highs will range from the upper 80s in wetter spots to near or above 100° in drier parts of the state.