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🟠 Severe

Red Flag Warning

Northern Sierra Front - Carson City/Douglas/Storey/Southern Washoe/Eastern Lyon/Far Southern Lassen Counties; Southern Sierra Front - Alpine/Northern Mono/Southern Lyon/Western Mineral Counties

Red Flag Warning issued June 17 at 1:29PM PDT until June 18 at 10:00PM PDT by NWS Reno NV

Alert Description

The National Weather Service in Reno has issued a Red Flag Warning for thunderstorms and strong outflow winds, which is in effect from 1 PM to 10 PM PDT Thursday. * Affected Area...Fire Weather Zone 420 Northern Sierra Front including Carson City, Douglas, Storey, Southern Washoe, Western Lyon, and Far Southern Lassen Counties, Fire Weather Zone 421 Southern Sierra Front including Alpine, Northern Mono, Southern Lyon, and Western Mineral Counties. * Thunderstorms...A mix of wet and dry thunderstorms Thursday afternoon. There is some uncertainty in thunderstorm coverage, but isolated dry lightning will be possible. * Outflow Winds...Gusty and erratic thunderstorm outflow winds, even well away from rain cores. Gusts to around 50 mph possible. * Impacts...Lightning can create new fire starts and may combine with strong outflow winds to cause a fire to rapidly grow in size and intensity before first responders can contain them.

Safety Instructions

Avoid outdoor activities that can cause a spark near dry vegetation, such as yard work, target shooting, or campfires. Follow local fire restrictions. Check weather.gov/reno for updates and livingwithfire.info for preparedness tips.

Time Information

Effective
Jun 18, 2026, 8:00 PM
Expires
Jun 18, 2026, 8:00 PM
Issued
Jun 17, 2026, 8:29 PM

Alert Details

Severity
Severe
Urgency
Expected
Certainty
Likely
Category
Met

Issued By

NWS Reno NV
National Weather Service

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