Heavy Rainfall and Severe Thunderstorm Threats; Heat Risk Expands; Monitoring the Tropics

Flash flooding risks continue for portions of the Four Corners and Great Basin through today. Severe thunderstorms are outlooked from the eastern Great Lakes, southern New England into the mid-Atlantic through Tuesday. Heat risk increases and expands across the center of the nation and across the Ohio Valley and mid-Atlantic this week. Continue to closely monitor tropical development in the Gulf. Read More >

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Last Map Update: Mon, Aug 31, 2026 at 2:50:26 pm PDT

Watches, Warnings & Advisories

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National Weather Service Salt Lake City, UT

National Weather Service San Joaquin Valley, CA

National Weather Service NWS Flagstaff, AZ

Flash Flood Warning

Red Flag Warning

Flood Advisory

Lake Wind Advisory

Frost Advisory

Flood Watch

Thunderstorm Outlook Today

Severe Thunderstorm Wind Outlook

Thunderstorm Outlook Tuesday

Cooling Trend

Weather History

Isolated to scattered thunderstorms are expected in Eastern 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 wind gusts near 55 mph and dangerous cloud to ground lightning strikes.

Isolated to scattered thunderstorms are expected in Eastern Nevada from 12 PM PDT this afternoon until 8 PM PDT this evening. A few of these thunderstorms could be severe in parts of Eastern Nevada. The primary thunderstorm hazards will be wind gusts as high as 60 mph, locally heavy rainfall, small hail, and dangerous cloud to ground lightning strikes.

Isolated thunderstorms are expected in Eastern Elko County from 12 PM PDT Tuesday afternoon until 8 PM PDT Tuesday evening. A few of these thunderstorms could be strong. The primary thunderstorm hazards will be wind gusts near 50 mph and dangerous cloud to ground lightning strikes.

High temperatures throughout Northern and Central Nevada Tuesday afternoon will be two to four degrees cooler than this afternoon. Maximum temperatures across Northern and Central Nevada Wednesday afternoon will be seven to nine degrees below normal for this time of year.