Floriston Fire

Floriston, Nevada-Yuba-Placer Unit, Cal Fire. Ten miles northeast of Truckee, CA. Timber and chaparral.

September 24, 2026 at 5:25 PM The Floriston Fire is at 622 acres and 100% contained.

September 22, 2026 at 3:41 PM The Evacuation Warning for Zone NCO-E379-A has been lifted. Please continue to use caution in the area.
Both westbound lanes of I-80 remain open. Drive carefully through the fire area due to ongoing operations and equipment. The westbound Farad exit remains closed. As of 7:00 a.m., the Sacramento Regional Incident Management Team has transitioned command back to the local authorities having jurisdiction (CAL FIRE NEU and partner agencies).

September 21, 2026 at 6:14 PM Minimal fire behavior with no growth over several days. Final update unless a significant change occurs.

September 20, 2026 at 6:23 PM The fire footprint remains unchanged, while drones using infrared technology continue to identify hotspots, giving firefighters the intel they need to locate and extinguish any remaining heat in inaccessible areas.

September 19, 2026 at 6:42 PM Firefighters made great progress throughout the day today targeting hotspots with drone infrared imagery from last night. Crews continue to mop up 200-500’ in from the perimeter, further securing the fireline. All spot fires have handlines around them. The steep and rocky terrain presents challenges to firefighters, and rockfall still poses a threat to westbound lanes of Interstate 80 where the #2 lane remains closed. All evacuation orders have been lifted, with only zone NCO-E379-A remaining under an evacuation warning. Dry and mild weather is expected through the weekend, with temperatures steadily increasing into midweek and daytime relative humidity remaining around 20–25%.

September 19, 2026 at 3:36 PM Firefighters held the fire within current containment lines at 622 acres and have now achieved 35% containment.

Firefighters continue strong progress with mop-up nearing 200 feet around most of the perimeter and containment lines being strengthened where possible. Rock fall and rollout due to extremely steep conditions continue to be an issue on the fire affecting Interstate 80.

Evacuations: All prior warnings have been lifted. A previous evacuation order has been reduced to a warning in the immediate vicinity of the fire (no residents currently in the warning area).

September 18, 2026 at 8:05 AM Better mapping puts the fire at 622 acres and 15% contained. Structures and powerlines remain threatened with evacuation orders and warnings in effect. Interstate 80 re-opened today at 0700. Addtional threats include the Truckee Watershed and natural resources. There are road closures in place for the fire area. Sacramento Regional IMT (Schwab) is in unified command assisting CAL FIRE and the U.S. Forest Service.

September 17, 2026 at 5:52 PM Firefighters have held the fire to 640 acres and have increased containment to 8%. Operations will continue through the evening to strengthen containment lines working in steep rugged conditions.

September 17, 2026 at 5:19 PM A virtual community meeting will be hosted on the CAL FIRE Nevada-Yuba-Placer Facebook page tonight (Thursday, September 17) at 6:00 pm to provide updates and information about the Floriston Fire in Nevada County. The meeting will be live on Facebook, offering community members the opportunity to hear directly from fire officials about the current status of the fire, containment efforts, and safety measures. Additionally, the public can submit questions online during the virtual meeting and they will be addressed by officials.

Event Details:

• Date: Thursday, September 17, 2026
• Time: 6:00 PM
• Platforms: 
  Facebook: https://www.facebook.com/CALFIRENEU/

September 17, 2026 at 11:43 AM Four helicopters are assigned to the incident. The fire is showing minimal activity.

September 17, 2026 at 8:55 AM The fire remained within last night’s perimeter, with dozer line along portions of the south side and hand line around portions of the fire. Two spot fires were identified to the north.

The north side of the fire, toward Reno, remains the priority due to open line and areas where existing line needs improvement. Down-canyon winds are expected through Friday before transitioning to up-canyon winds. Forecasted winds are 6–10 mph, with gusts up to 20 mph, relative humidity around 30% and daytime temperatures in the mid to high 60s.

Westbound Interstate 80 remains closed from approximately the state line through the fire area due to safety concerns, including the potential for material to roll onto the highway. Caltrans will assess roadway conditions with fire personnel to evaluate when it can safely reopen. Evacuation warnings and orders remain in place.

The Sacramento Regional Incident Management Team assumed command of the incident at 7 a.m. this morning.

September 17, 2026 at 7:53 AM Minimal fire growth overnight. September 17, 2026 at 8:16 AM CALFIRE will be using the Castle Peak parking lots at the entrance to Northstar as their Incident Command Post (ICP) for the Floriston Fire. Please do not enter or park in these lots while they are being used for the incident.

September 17, 2026 at 7:15 AM Sacramento Regional IMT has been assigned to the incident.

September 17, 2026 at 6:29 AM Winds in the fire area decreased overnight. Night-flying helicopters are assigned to the incident and are actively supporting firefighting operations. Firefighters continued working through the night to strengthen containment lines and limit the fire’s spread.

September 16, 2026 at 8:13 PM Evening summary: The fire burned upslope through fine fuels until reaching shrubs and burned rapidly through Eastside Pine understory into heavy downed fuels nd white fir.

Planned Actions: Continue to engage in fire suppression. Construct direct control line on steep rugged terrain. Maintain and reinforce current containment lines to ensure perimeter control. 231 structures are potentially threatened.

September 16, 2026 at 7:07 PM A new round of aerial mapping has the fire now at 613 acres and still 5% contained. Structures and powerlines are threatened with evacuation orders and warnings in effect. Interstate 80 is threatened with road closures in place.

September 16, 2026 at 4:54 PM Zone NCO-E379-A has been upgraded to an Evacuation order. Zones SIE-E099 and SIE-E100-B have been upgraded to Evacuation Warnings.

September 16, 2026 at 4:42 PM Zone NCO-E379 has been split into NCO-E379-A and NCO-E379-B. Evacuation Warnings remain in effect for both zones for now. One westbound lane is open between Farad to Floriston Way.

September 16, 2026 at 3:28 PM Firefighters are maiking progress on the 300-acre fire which is now 5% contained.

September 16, 2026 at 1:24 PM Per NWS Reno: Smoke from the Floriston Fire may affect portions of Verdi, Mogul, northern Reno, including the North Valleys and Sparks this afternoon.

September 16, 2026 at 1:14 PM Floriston IC is requesting 10 additional water tenders, four engine striketeams, four dozer striketeams and overhead personnel.

September 16, 2026 at 12:35 PM Air Attack 230 is returning to Grass Valley, relief Air Attack 658 has the incident. Fire activity has slightly moderated.

September 16, 2026 at 12:24 PM CAL FIRE is now in Unified Command with CHP, Nevada County Sheriff’s Office, and the Sierra County Sheriff’s Office. Additional Evacuation Warnings have been issued for the following zones:

NCO-E105
NCO-E106

September 16, 2026 at 12:23 PM The Washoe County Sheriff’s Office is monitoring the Floriston Fire. Travel along I-80 is being impacted. Westbound I-80 is currently closed at Gold Ranch. For current Nevada road conditions, please monitor https://www.nvroads.com or the Nevada 511 app.

September 16, 2026 at 12:18 PM Caltrans will be shutting down the #2 lane on the westbound side from Stateline to Floriston. They are working on getting the westbound fast lane reopened.

September 16, 2026 at 12:08 PM The Intel 12 mapping platform has the main fire at 295 acres and the spot fire is 2 acres.

September 16, 2026 at 12:01 PM The campgrounds at Boca Reservoir are impacted by smoke and under the evacuation warning for Zone NCO-E379.

September 16, 2026 at 11:43 AM Westbound I-80 is closed at the Nevada State Line. There is currently no estimated time of reopening. Motorists should avoid the area, expect significant delays.

September 16, 2026 at 11:31 AM Floriston Air Attack is requesting Type 1 tankers.

September 16, 2026 at 11:30 AM Power outage in the Floriston area. Lines have been de-energized for safety.

September 16, 2026 at 11:26 AM Per CAL FIRE: The fire is estimated at 20 acres with a dangerous rate of spread and is threatening Interstate 80, the Truckee watershed, and nearby natural resources. Additional air and ground resources have been requested.

September 16, 2026 at 11:19 AM Fish and Wildland is evacuating two campgrounds in the area.

September 16, 2026 at 11:10 AM The Nevada County Sheriff’s Office has issued an EVACUATION WARNING for zone NCO-E379 on 09/16/2026 at 10:58 AM for a wildland fire in the area of Highway 80 at Floriston. Those who require additional time to evacuate, and those with pets and livestock should consider leaving now. Check https://protect.genasys.com/ for updates and available shelter locations

September 16, 2026 at 11:08 AM A spot fire towards the Nevada state line is also moving uphill.

September 16, 2026 at 10:53 AM Floriston IC is setting up staging at Hirschdale and I-80 for all resources coming up westbound I-80. The fire is estimated at 10 acres.

September 16, 2026 at 10:49 AM The Floriston Fire is moving uphill at a moderate rate of spread. Tahoe Hotshots have mobilized and are responding to the fire.

September 16, 2026 at 10:46 AM Floriston IC is ordering additional water tenders and engines to the incident. Floriston Air Attack is requesting one additional helicopter and one additional tanker.

September 16, 2026 at 10:34 AM Air Attack 230, Tankers 88 and 89 are arriving at the Floriston incident to assist the two helicopters and ground resources already on scene.

September 16, 2026 at 10:31 AM Additional reources dispatched to the Floriston Fire outside of Truckee. Smoke is impacting I-80.