Dangerous Heat in the Southwest; Severe Thunderstorms from the Central Plains into the Ohio Valley

Dangerous heat will build across the Southwest U.S. through the end of the week with daytime highs of 110-115°F. Isolated to widely scattered severe storms are expected across parts of the central and southern High Plains, Great Lakes into the Ohio Valley, and parts of the Ozarks to Lower Mississippi Valley today. Read More >

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Last Map Update: Wed, Aug 26, 2026 at 9:12:44 am 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

Heat Advisory

Hazardous Weather Outlook

Severe Weather Outlook Wednesday

Severe Weather Timing Wednesday

Heat Index Trends

Forecast Summary

Scattered thunderstorms are forecast Wednesday afternoon and into the evening, with a marginal to slight risk for severe weather, primarily across far eastern Oklahoma and western Arkansas. Locally damaging winds to 70 mph will be the main threat, with marginally severe hail possible as well.

Scattered thunderstorm development is expected by mid afternoon across parts of eastern Oklahoma and western Arkansas. Storms may become strong to severe, particularly across far eastern Oklahoma and western Arkansas. The most likely timing for severe weather across the area is between 4-10 PM. Storms dissipate and exit the area by late evening/early tonight.

Hot & humid conditions persist across SE OK & W-Central AR today. Cooler conditions likely Thursday-Saturday before dangerous heat returns by early next week. Heat stress will likely impact daytime outdoor activities. Drink plenty of water and take breaks in shade when spending time outdoors.

Temperatures mostly above normal with continued periods of locally high heat stress to continue Wednesday. Periods of low to medium rain chances continue through Wednesday night. Temperatures trend to near normal late week. Areas of localized fire weather concerns will persist until widespread beneficial rainfall occurs.

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Dangerous Heat in the Southwest; Severe Thunderstorms from the Central Plains into the Ohio Valley

NWS Forecast Office Tulsa, OK