National Weather Service United States Department of Commerce

Heavy to Excessive Rains in The Four Corners Region and Midwest; Heat Persists in the South-Central U.S.

Repeated rounds of showers and thunderstorms could bring a flash flooding threat across the Four Corners region and from the mid-Mississippi Valley into the lower Great Lakes. Hot temperatures and high humidity will continue to challenge daily records from the Southern Plains to the lower Mississippi Valley. Read More >

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Last Map Update: Wed, Sep 16, 2026 at 10:34:42 am CDT

Hot and humid conditions will continue into Wednesday, with a Heat Advisory posted for most of eastern Oklahoma and the Arkansas River Valley from Noon to 7 pm. Expect heat index values up to 107.
Low storm chances develop each afternoon Wednesday and Thursday over mainly far eastern OK and also northwest AR. Locally gusty to strong winds are possible with any storms. Chances decrease after sunset with the loss of daytime heating.
Hot and humid conditions will continue through much of the week. Continue to take your heat related precautions when spending time outdoors.
While isolated storm chances exist Wed & Thu, shower and storm chances increase late weekend into early next week as a cold front is forecast to move through eastern OK and northwest AR.
Unseasonably hot weather will continue this week with periodic low storm chances through the period.
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