Extreme Heat Across the Southern U.S.; Flash Flooding Threats in the Mid-Atlantic, Northeast, and Four Corners Region

Dangerous and extreme heat will remain across portions of the southern U.S. this week. Heavy rainfall may bring significant flash flooding across portions of the Mid-Atlantic and Northeast through the night, and additional flash flooding concerns across New England on Wednesday. Monsoonal thunderstorms will bring a flash flood risk to the Four Corners region, especially in burn scar areas Read More >

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Last Map Update: Tue, Jul 28, 2026 at 7:44:06 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

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Heat Advisory

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Hazardous Weather Outlook

Southern Rockies Radar

Heat Risk Wednesday

Wed Afternoon & Night Rain

Temperature & Precipitation Outlook

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Some storms in northern and central New Mexico will be capable of producing locally heavy rainfall and flash flooding this evening.

Moderate to extreme heat risk will return to parts of northern and central New Mexico on Wednesday.

Scattered to numerous showers and thunderstorms will develop Wednesday afternoon and continue through the night. A few places along and east of the Sangre de Cristo Mountains will probably accumulate nearly 3 inches of rainfall, where there will be a risk of localized flash flooding.

Some monsoon thunderstorms will be capable of producing locally heavy rainfall and flash flooding each afternoon and evening over the next seven days. High temperatures will also reach into the 100s in many lower elevation locations each day.

Never, never, never leave children, disabled or elderly adults, or pets in parked, unattended vehicles! Studies have shown that the temperature inside a parked vehicle can rapidly rise to dangerous levels for people and pets. Leaving the windows slightly open does not significantly decrease the heating rate. The effects can be more severe on children because their bodies have not developed the ability to efficiently regulate internal temperature.