Heavy Rain and Flash Flooding in the West; Heat Expands in the Central U.S.

Monsoonal moisture will produce showers and thunderstorms with heavy rain over parts of the Southwest, Great Basin, and Central Rockies through Monday. Flash flooding is possible, especially in and around burn scars and in areas of steep terrain. Heat will persist across the Central U.S. early this week, spreading into the Ohio Valley and Mid-Atlantic later this week. Read More >

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Last Map Update: Sun, Aug 30, 2026 at 1:54:31 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

Flood Watch

Hazardous Weather Outlook

Rainfall through Monday

Temp & Precip Outlook

Excessive Rainfall Outlooks

Hazardous Heat

Showers and thunderstorms will favor areas along and west of the Central Mountain Chain through Monday. Storms will move toward the east and northeast around 10 to 20 mph today and toward the north and northeast around 15 to 25 mph on Monday. Most likely rainfall amounts will generally be up to one inch, though localized areas may receive 1.5 to 3 inches of rainfall through Monday. Heavy rainfall may cause flash flooding in areas that see repeated rounds of rainfall.

High temperatures will cool down to slightly below normal across western NM through mid week. Elsewhere, above normal temperatures are expected to persist. Storm chances will peak through Monday before decreasing Tuesday.

Locally heavy rainfall may lead to flash flooding across western NM Sunday and Monday where repeated rounds of rain occur.

Heat can escalate quickly. Warm temperatures can quickly become dangerous. Heat is one of the most deadly weather hazards - don't underestimate it. Never leave people or pets alone in a car. Drink plenty of water, even if you don't feel thirsty. Wear loose-fitting, light-colored clothing. Spend time in air conditioning and in the shade.