Tropical System in the Gulf; Dangerous Heat and Air Quality Concerns; Severe Thunderstorms for Midwest to mid-Atlantic

Tropical system in the Gulf expected to gradually strengthen the next couple of days off the Florida Panhandle and Alabama coasts. Instances of flash flooding will be possible through Thursday along the eastern and central Gulf Coast. Severe thunderstorms will develop and move along a cold front crossing the Upper Midwest, and through the Ohio Valley/Mid-Atlantic on Tuesday. Read More >

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Last Map Update: Mon, Jul 20, 2026 at 8:46:22 am PDT

Watches, Warnings & Advisories

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National Weather Service Salt Lake City, UT

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Flood Warning

Heat Advisory

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Air Quality Alert

Heat Advisory

Thunderstorm Outlook

Excessive Rainfall Outlook Today

Excessive Rainfall Outlook Tuesday

A Heat Advisory is in effect for Northern Nevada until 8 PM PDT this evening. This type of heat will result in a moderate risk for heat-related illnesses. Although heat events like this are relatively common and happen many times a year, heat-related impacts are possible for those new to the area if simple precautions are not taken. Plan to take action to reduce time outdoors, drink plenty of water, and remain in air-conditioned buildings. Heat-sensitive groups, such as the elderly, young children, and those with chronic ailments may need assistance to avoid heat-related illnesses. As always, never, ever leave a child or pet in an enclosed automobile.

Isolated to scattered thunderstorms are expected in most of Northern and Central Nevada from 12 PM PDT this afternoon until 8 PM PDT this evening. A few of these thunderstorms could be strong. The primary thunderstorm hazards will be localized flooding, small hail, wind gusts near 50 mph, and dangerous cloud to ground lightning strikes.

Monsoonal moisture will surge northward over Eastern Nevada today, resulting in scattered thunderstorms. Rainfall could be heavy at times. Heavy rainfall may result in flooding of recent burn scars, streams, creeks, and low-lying areas.

There is a slight risk of excessive rainfall in parts of Eastern Nevada from 11 AM PDT Tuesday morning until 9 PM PDT Tuesday evening. Heavy rainfall may result in flooding of recent burn scars, streams, creeks, and low-lying areas. Ditches could become clogged with debris.