Tropical Storm Arthur and Heavy Rainfall in the South; Severe Weather in the Midwest

An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana tonight. Intense tornadoes, swaths of damaging gusts, and hail in excess of 2 inches in diameter possible. Tropical Storm Arthur will continue to produce strong winds across coastal Upper Texas and Louisiana tonight, as well as potentially life-threatening flooding across southern Louisiana into Mississippi. Read More >

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Last Map Update: Wed, Jun 17, 2026 at 7:24:16 pm MST

Watches, Warnings & Advisories

National Weather Service Salt Lake City, UT

National Weather Service Grand Junction, CO

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National Weather Service Albuquerque, NM

National Weather Service NWS Tucson Arizona

Flash Flood Warning

Extreme Heat Warning

Red Flag Warning

Dust Advisory

Wind Advisory

Fire Weather Watch

Extreme Heat Warning for Grand Canyon

Weather Outlook

The Extreme Heat Warning for the Grand Canyon below 4000 feet elevation has been extended through 8 PM Thursday. Afternoon temperatures will reach as high as 112 degrees at Phantom Ranch, creating hazardous conditions for hikers. Hiking during the daytime is discouraged in the lower canyon.

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Tropical Storm Arthur and Heavy Rainfall in the South; Severe Weather in the Midwest

NWS Forecast Office Flagstaff, AZ