Rare Tornado Warning and Severe Flash Flooding Strike Western Nevada Amid Active Wildfire Crisis

RENO, NV — The National Weather Service (NWS) in Reno issued an immediate Tornado Warning for Storey, Southern Washoe, and North Central Lyon counties, as severe convective thunderstorms swept across western Nevada.

The rare atmospheric event introduced severe turbulence, quarter-sized hail, and flash flood threats across active high-desert wildfire zones.

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|          WESTERN NEVADA SEVERE WEATHER DOSSIER         |
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|  - Issuing Agency: National Weather Service (Reno)     |
|  - Primary Hazards: Tornado Warning, Quarter-Size Hail,|
|                     Flash Floods, 40 MPH Gusts         |
|  - Impacted Counties: Washoe, Storey, Lyon, Ormsby     |
|  - Critical Burn Scars: Bug Fire & Stallion Fire       |
|  - Doppler Radar Target: Derby Dam / Virginia City Area|
+--------------------------------------------------------+

Radar Rotation and Flash Flood Threats

Meteorologists alerted residents at 1:37 PM PDT after Doppler radar identified mid-level atmospheric rotation near Derby Dam, approximately 16 miles northeast of Virginia City.

The storm cell moved east across the Interstate 80 corridor, packing dangerous outflow winds capable of driving erratic fire behavior.

In addition to wind hazards, the NWS maintained an active Flood Watch across the Reno-Carson City-Minden corridor. Heavy downpours over steep, vegetation-stripped terrain created elevated risks of flash flooding and mudslides along mountain approaches.

Impact on Active Wildfire Complexes

The severe weather impacted the perimeter of the Bug Fire—which expanded to over 70,700 acres after merging with the Fred Mountain Fire—and the nearby 30,000-acre Stallion Fire near Pyramid Lake.

While localized rainfall offered brief surface moisture, interagency commanders cautioned that 40 mph outflow gusts can breach established containment lines and create extreme safety hazards for ground crews.

“The concern around active burn scars is not simply additional rainfall,” NWS meteorologists noted. “Sudden wind shifts and rapid runoff across burned soil create treacherous conditions for emergency responders.”

Emergency management officials advise residents across Washoe and Lyon counties to remain indoors during active weather alerts and monitor local emergency communications.

Source: National Weather Service Reno, Nevada Division of Emergency Management, Washoe County Sheriff’s Office.