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: Wed, Aug 19, 2026 at 6:30:25 pm CDT

Watches, Warnings & Advisories

National Weather Service Wichita, Kansas

National Weather Service Springfield, MO

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National Weather Service Little Rock, AR

National Weather Service Fort Worth/Dallas, TX

Extreme Heat Warning

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Hazardous Weather Outlook

Heat Headlines Wednesday

Severe Weather Outlook Today/Tonight

Heat Headlines Thursday

Dangerous Heat Persists

Forecast Summary

Dangerous heat will persist for all of eastern Oklahoma and western Arkansas on Wednesday, with heat index values in excess of 110 F expected across most of eastern Oklahoma and west central Arkansas this afternoon. Little nighttime relief is expected either. Heat stress will remain high during this period.

Isolated to scattered thunderstorms are expected to develop by late this afternoon or early this evening across far northeast Oklahoma and far northwest Arkansas. Locally strong to severe downburst winds and large hail up to half-dollar size will be the main threats with storms that develop.

Dangerously hot conditions will persist in parts of the area Thursday, with slight relief in areas north of I-40. An Extreme Heat Warning is in effect for far southeast OK from 1PM to 8 PM Thursday, and a Heat Advisory is in effect for east central OK and west central AR.

High heat stress conditions will persist and will continue to impact outdoor activities. Some minor heat relief is forecast on Thursday and Friday. Dangerous heat returns this weekend into next week.

Hot temperatures continue, with isolated to scattered thunderstorm potential tonight into Thursday morning. Slightly cooler for some on Thursday and into Friday, but back to the hot weather by this upcoming weekend.

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

NWS Forecast Office Tulsa, OK