National Weather Service United States Department of Commerce

Heavy Rain and Flash Flooding in the West; Heat Expands in the Central U.S.

Monsoonal moisture will produce showers and thunderstorms with heavy rain over parts of the Southwest, Great Basin, and Central Rockies through Monday. Flash flooding is possible, especially in and around burn scars and in areas of steep terrain. Heat will persist across the Central U.S. early this week, spreading into the Ohio Valley and Mid-Atlantic later this week. Read More >

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Last Map Update: Wed, Sep 2, 2026 at 7:48:44 am CDT

A heat advisory is in effect for a good portion of eastern Oklahoma and the lower Arkansas River Valley areas, running from noon to 8 pm today. Expect heat index values as high as 108 during the afternoon.
A localized fire weather threat will exist Wednesday, focused across portions of far southeast Oklahoma. Drought-stricken fuels are increasingly receptive to fire spread and increasing winds due to the remnants of Eduoard will lead to the heightened concerns. Heed existing burn bans in this area and notify authorities immediately of any accidental fire starts or if smoke is visible.
The dangerous heat is expected to continue into early next week, possibly longer. Heat stress will likely impact daytime outdoor activities. Drink plenty of water and take breaks in shade when spending time outdoors. There are early signals of a cold front in the Sep 10-15 time frame.
An extended period of hot and dry weather is likely to persist through at least the first part of September. The ongoing drought situation will worsen.
August 2026 will go down as one of the hottest on record. In fact, it was the hottest August on record at Fayetteville's Drake Field! It was the 5th hottest August at Tulsa International Airport and the 3rd hottest August at Ft. Smith Regional Airport. It was also a very dry month, with well below average precipitation observed at the 3 sites.
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