Dangerous Heatwave Across the Western U.S; Hot and Humid in the Southeast and Mid-Atlantic

A heatwave is poised to bring record-breaking temperatures across the Western United States through the weekend. Triple digit high temperatures are expected as Excessive Heat Warnings are in effect. Hot and humid conditions will spread into the Southeast and Mid-Atlantic through the weekend and into next week. Heat index values up to 110 degrees will be possible. Read More >

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Last Map Update: Fri, Jul 5, 2024 at 9:12:22 pm MDT

Watches, Warnings & Advisories

National Weather Service Western and Central Wyoming

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National Weather Service Grand Junction, CO

National Weather Service NWS Flagstaff, AZ

National Weather Service Albuquerque, NM

Excessive Heat Warning

Red Flag Warning

Heat Advisory

Lake Wind Advisory

Excessive Heat Watch

Fire Weather Watch

Dangerous Heat

Increasing influence from a strengthening ridge of high pressure will result in a long-duration heatwave. Dangerous levels of heat will build into lower elevations of southern Utah by Sunday, with afternoon high temperatures generally in the 110 to 115 degree range. In combination with mild overnight lows in the upper 70s, relief from the heat will be limited. An Excessive Heat Warning will go into effect beginning 9 AM Sunday and persist through 9 PM Tuesday, though further extensions to the warning will likely be needed. Additionally, areal expansions of heat advisories/watches/warnings are also likely through the upcoming week.