Thunderstorms and Heavy Rain in the Mid-South; Heat Continues in the Southeast and Southwest

Severe thunderstorms and heavy rain are expected across portions of the mid-Mississippi Valley into the Ohio Valley and portions of Arizona. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that, when combined with oppressive dew points, little-to-no relief from the scorching daytime highs will be available. Read More >

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Last Map Update: Tue, Aug 18, 2026 at 11:16:41 pm MDT

Watches, Warnings & Advisories

National Weather Service Grand Junction, CO

National Weather Service NWS Flagstaff, AZ

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National Weather Service NWS Tucson Arizona

Extreme Heat Warning

Hazardous Weather Outlook

Rainfall Potential Wed-Thurs

Severe Weather Wednesday

Temp & Precip Outlook

A moist backdoor front will enter the eastern plains with an increase in storm coverage Wednesday and Thursday. Some severe storms are possible over northeast areas Wednesday.