Severe Thunderstorm and Tropical Storm Bertha Impacts

Numerous severe thunderstorms are expected across a broad region from the Ohio Valley to the Mid-Atlantic and Northeast States today into tonight. Swaths of damaging wind gusts are expected and some tornadoes are possible. Bertha is expected to bring tropical storm conditions to portions of the Gulf Coast from the Florida Panhandle westward to southeastern Louisiana later today and Wednesday. Read More >

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Last Map Update: Tue, Jul 21, 2026 at 12:16:43 pm CDT

Watches, Warnings & Advisories

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National Weather Service Austin/San Antonio, TX

National Weather Service Houston/Galveston, TX

National Weather Service Lake Charles, LA

Extreme Heat Warning

Heat Advisory

Hazardous Weather Outlook

Extreme Heat Warning in Effect

Dangerous Heat This Week

Increased Risk of Heat Related Illness This Week

An Extreme Heat Warning is now in effect for locations along/east of I-35 and along/north of I-20 this afternoon and evening for heat index values up to 112 degrees. Elsewhere, a Heat Advisory remains in effect through this evening for heat index values up to 108 degrees. Stay cool and take the proper steps to keep you and your loved ones safe from heat-related illnesses.

Dangerous heat is expected across the region this week, with high temperatures well into the 100s for many locations, and heat index values between 105-115 degrees. Ensure you take all necessary precautions to protect yourself from the heat. Drink plenty of water, limit time spent outdoors, and ensure you know the signs of heat related illness. We are monitoring a tropical disturbance in the Gulf that may bring some increased moisture and rain chances into parts of Central Texas later in the week.

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Severe Thunderstorm and Tropical Storm Bertha Impacts

NWS Fort Worth/Dallas