Rare Tornado Warning and Severe Flash Flooding Threaten Western Nevada Amid Devastating Wildfire Crisis

The National Weather Service (NWS) in Reno issued a rare Tornado Warning for Storey, Southern Washoe, and North Central Lyon counties in western Nevada on August 13, 2026. The warning was issued at 1:37 PM PDT after Doppler radar identified mid-level atmospheric rotation near Derby Dam, approximately 16 miles northeast of Virginia City. This unusual weather event brought severe turbulence, quarter-sized hail, and flash flood threats across active high-desert wildfire zones. 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, warning of heavy downpours over steep, vegetation-stripped terrain that created elevated risks of flash flooding and mudslides along mountain approaches.

The severe weather event 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. Emergency management officials and local meteorologists have been closely monitoring the situation, urging residents across Washoe and Lyon counties to remain indoors during active weather alerts and to monitor local emergency communications. The concern around active burn scars is not simply additional rainfall; sudden wind shifts and rapid runoff across burned soil create treacherous conditions for emergency responders. With over 100 wildfires burning across the state, Nevada is facing one of its most severe wildfire seasons on record.

Nevada's wildfire season has been exacerbated by drought conditions, high temperatures, and strong winds, which have pushed the state's firefighting resources to their limits. According to the NWS, winds of up to 40 mph are expected to persist throughout the region, further complicating firefighting efforts. Fire crews are also battling extreme terrain, including steep elevations and dense vegetation, making it increasingly challenging to contain the fires. The state's emergency management officials have activated emergency operations centers in response to the severity of the situation.

Residents in affected areas are advised to stay informed and follow evacuation orders from local authorities. Visitors and tourists are also urged to exercise caution and avoid areas prone to flash flooding and wildfires. The NWS has reported that the storm cell has produced multiple funnel clouds, and at least one tornado has been confirmed in the vicinity of Derby Dam. The situation remains fluid, and further updates will be provided as more information becomes available.

The flash flooding and tornado warnings have caused widespread disruptions, including road closures, airport delays, and school closures. Local businesses and residents are also taking precautions, boarding up windows and securing loose outdoor items that could become projectiles in strong winds. In a statement, the Washoe County Sheriff's Office emphasized the importance of public safety, urging residents to prioritize their well-being and follow official guidelines. The county has also activated an emergency hotline for residents in need of assistance or information.

As the situation continues to unfold, officials are working closely with federal and state agencies to coordinate relief efforts and provide support to affected communities. The Nevada Office of Emergency Management has established a wildfire information hotline for residents and visitors seeking up-to-date information. Those seeking assistance or guidance on wildfires and flash flooding in western Nevada can call the hotline at (775) 687-7650.

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

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