Tropical Storm Arthur and Heavy Rainfall in the South; Severe Weather in the Midwest

An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana tonight. Intense tornadoes, swaths of damaging gusts, and hail in excess of 2 inches in diameter possible. Tropical Storm Arthur will continue to produce strong winds across coastal Upper Texas and Louisiana tonight, as well as potentially life-threatening flooding across southern Louisiana into Mississippi. Read More >

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Last Map Update: Thu, Jun 18, 2026 at 7:20:34 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

Extreme Heat Warning

Heat Advisory

Small Craft Advisory

Extreme Heat Thursday

Heat Safety

Today

Weekly Outlook

An Extreme Heat Warning and Heat Advisory are in effect for South Central Texas Thursday from noon to 8pm. Heat indices will spike into the 108-118 range Thursday afternoon for all of the region. Exercise heat safety and precautions.

With potentially hazardous heat in the forecast, make sure you practice heat safety. Drink plenty of water and stay cool. Never leave people or pets alone in a closed car. Consider minimizing the amount of time spent outdoors in the heat.

Hot and humid weather is expected with highs in the 90s and heat indices in the triple digits.

Early summer heat will steadily build and continue this week, staying in the 90s for most areas to near 100 along the Rio Grande. Humid conditions will make the daytime heat feel hotter with heat indices reaching dangerous levels Thursday. Practice heat safety! It will be mostly dry through Thursday. Medium chances for rain return Friday through the weekend.