As Fast-Moving Wildfire Near Truckee Burns 640 Acres, I-80 Remains Closed

A rapidly spreading wildfire near Truckee that shuttered a span of Interstate-80 and prompted swift evacuation warnings has expanded to 640 acres.
The Floriston Fire in Nevada County, in California, broke out just after 10 a.m. Wednesday and exploded to nearly 300 acres within hours, spreading at a “dangerous rate” without containment, Cal Fire said.
The vegetation fire sparked on the hillside near the Floriston exit of I-80, closing the road’s westbound lanes near the Nevada state line and prompting evacuation warnings in three zones near Truckee. Cal Fire said the fast-moving blaze nine miles west of the town is threatening the thoroughfare, along with the Truckee watershed and nearby natural resources.

“Although it’s late in the season and the temperatures have dropped significantly, we’re still really dry,” said Chris Vestal, a spokesperson for CalFire.
Fuel moisture in the area is at a historic low after an abnormally dry winter and there’s zero precipitation in the long-range forecast, Vestal said. “We didn’t have a huge winter last year, so some of the larger diameter stuff did not have the opportunity to absorb the moisture that it would have in a more productive winter.”
This is the sixth fire reported in Nevada County this summer, according to CalFire’s archive.
Bulldozers and hand crews made significant progress securing the perimeter of the fire overnight, Vestal said.
20 engines, 10 water tenders, two helicopters, eight dozers and 12 hand firefighting crews continue to combat the blaze this morning which is now 5% contained according to CalFire.
Portions of both Nevada County and Sierra County remain under evacuation warnings today, CalFire said, and an evacuation order is in place for Nevada County, NCO-E379-A.
California Highway Patrol said there is currently no estimate for reopening I-80 and urged motorists to avoid the area and expect significant delays.
“It’s not just the fire danger that poses a hazard to travelers,” Vestal said, explaining that root systems hold soil, dirt and rock together above the road. When they burn, rocks and other debris can “roll onto the highway.”
CalFire said residents should continue to pay attention to both Sierra and Nevada County’s Sheriff’s offices for additional updates.
This is a developing story and will be updated.
