Houston, TX – Strong storms and widespread rainfall are expected to move across Southeast Texas tonight, bringing the potential for hail, heavy downpours, and brief flooding as the region heads into Thursday morning. Meteorologists with the National Weather Service (NWS) Houston–Galveston office say confidence is increasing that storms will strengthen overnight.
According to NWS, scattered showers will begin filling in through the evening, becoming more widespread after midnight. A Marginal Risk (level 1 of 5) for severe weather has been issued for much of Southeast Texas, including Houston, Galveston, College Station, Conroe, and Baytown. Forecasters say storms could become strong to severe, capable of producing large hail and pockets of locally heavy rainfall.
Rainfall totals may reach 0.5 to 1 inch for most locations, with isolated areas possibly seeing up to 3 inches where training thunderstorms develop. Coastal sections—including Galveston, Freeport, and Bolivar—could also see an isolated tornado or waterspout offshore overnight.
The greatest window for strong to severe storms appears to be 11 p.m. to 5 a.m., especially near coastal counties. Forecast guidance shows elevated rain chances across the region, with 70–100% probabilities tonight for cities such as Houston, Katy, League City, Bay City, Brenham, Columbus, and Huntsville.
Temperatures tonight fall into the mid-40s to mid-50s across inland counties, with coastal lows holding in the upper 50s. Cooler daytime highs on Thursday are expected, generally in the upper 40s to mid-50s with lingering showers early.
NWS cautions that minor street flooding, especially in poor-drainage or construction zones, may develop if heavier cells train over the same locations. Drivers are urged to remain weather-aware overnight, avoid flooded roadways, and monitor updated alerts as the system moves east.
