Severe Thunderstorms in the Midwest and Arizona; Heat Continues in the Southeast and Southwest

Thunderstorms, some severe, may lead to scattered instances of flash flooding across the Midwest and Ohio Valley and southern Arizona. The threat will shift to the Mid-Atlantic coast on Thursday. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that little-to-no relief from the scorching daytime highs will be available. Read More >

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Last Map Update: Thu, Aug 20, 2026 at 5:04:48 am 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 and Heat Advisory in Effect

Hot with Low Storm Chances through Saturday

Exceptional Heat Continues Next Week

Above-Average August Temperatures

Extreme Heat Safety

An Extreme Heat Warning continues for North Texas, while a Heat Advisory remains active across Central Texas. Always remember to stay hydrated by drinking plenty of water, take regular breaks in air conditioning or shade, and check the back seat before locking your vehicle!

Exceptionally hot weather will persist over the next few days, with triple-digit temperatures expected each afternoon. However, an upper-level disturbance and a stalling front will bring a slight chance of storms to the region. Should you encounter a storm, remember: “When thunder roars, go indoors.”

Temperatures will remain well above normal due to a persistent strong ridge of high pressure overhead, though a slight chance of rain could return by the middle of next week.

As August continues, we have received several questions asking why we are using 'unseasonable' to describe this week of high temperatures! This is because the high temperatures across North and Central Texas have been much closer to our record highs for August than our normal average highs. This pattern is expected to continue, with the possibility for afternoon temperatures at DFW on Saturday to tie or exceed the record high.

Extreme heat is expected this week. Everyone is at risk from the dangers of extreme heat, but these groups are more vulnerable than most. Ensure that your loved ones and neighbors are safe from the heat and remain Weather-Ready. weather.gov/safety/heat-during