Areas of Dangerous Heat and Severe Thunderstorms

Dangerous heat will build across the Southwest U.S. through the end of the week with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week before returning over much of the Plains into next week. Severe thunderstorms are expected across parts of the central and southern High Plains, central Great Lakes, and Ozarks Wednesday. Read More >

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Last Map Update: Wed, Aug 26, 2026 at 4:42:25 am 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

Severe Storms Today

Wednesday: Hot and Wetter

Temp & Precip Outlook

Hazardous Heat

There is a marginal risk of severe storms capable of producing large hail and damaging winds in most locations along and east of the central mountain chain this afternoon and evening.

Storms will increase in coverage on Wednesday, with the highest rain chances across the northeast. It will be hot again with temperatures as much as 15 degrees above average in south-central NM.

Record and near-record heat will continue for the rest of the week. Increased storm coverage and rainfall intensity through Thursday, then wetter again this weekend and early next week.

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.