Severe Thunderstorms in the Central Plains and Lower Missouri Valley; Heat Continues in the Southeast and Southwest

Severe thunderstorms capable of large hail and damaging wind gusts are forecast to impact the central Plains into the Lower Missouri Valley through this afternoon. Dangerous heat persists across the southern Plains, Southeast U.S. and Puerto Rico this week, and will return to the Southwest today. Read More >

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Last Map Update: Tue, Aug 18, 2026 at 2:14:42 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

Storm Coverage Today & Wednesday

Severe Weather Wednesday

Hazardous Heat Wednesday

Temp & Precip Outlook

After a downtick in storm coverage today, a moist backdoor front will enter the eastern plains with an increase in storm coverage on Wednesday. Some severe storms are expected over northeast areas on Wednesday.

Some storms may turn severe on Wednesday afternoon and early evening along and east of the Sangre de Cristo Mountains.

High temperatures in the low 100s will produce high heat risk in some lower elevation locations on Wednesday afternoon and early evening.

Hot temperatures will continue. After a downtick in storm coverage today, showers and thunderstorms will increase in coverage Wednesday through Friday.