Extreme Heat and Excessive Rainfall This Week

A significant heat wave is underway for the Intermountain West, Northern Plains, and Upper Great Lakes, peaking in intensity through midweek and lingering across parts of the Northern Plains and Midwest until this weekend. In southwest Texas, excessive rainfall may bring a risk for potentially life-threatening flash and arroyo flooding through Thursday. Read More >

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Last Map Update: Mon, Jul 13, 2026 at 10:24:41 pm MDT

Watches, Warnings & Advisories

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Extreme Heat Warning

Heat Advisory

Lake Wind Advisory

Flood Watch

NWS Great Falls Radar Animation

Heat Begins To Ease

Daily Shower and Thunderstorms Risks

Flash Flooding From Thunderstorms This Week

NWS Great Falls Radar Animation

There will be one more hot day before temperatures cool slightly heading towards mid-week. Continue to exercise precaution to avoid heat related illnesses, especially today.

There will be daily rounds of scattered showers and thunderstorms for much of the week. Hazards will include localized damaging winds, hail, and torrential downpours in addition to lightning. Be ready to seek shelter if outdoors, watch for localized flash flooding, and have multiple ways to receive warnings. #MTwx

Daily chances for showers and thunderstorms this week will also bring a flash flooding risk to any thunderstorm producing heavy rainfall. Areas that are most at risk will be burn scars and urban areas. Don’t try to travel through flood waters. Turn around don’t drown! #MTwx