The Floriston Fire is now 640 acres and remains 5% contained, after starting around 10 a.m. on Wednesday northeast of Truckee.
Firefighters are working to strengthen containment lines and limit the fire's spread.
In a Thursday morning update, CAL FIRE says, "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."
I-80 west is closed at the Nevada state line. There is no word yet on when it could reopen.
People are advised not to use Dog Valley Road as a detour, as it is closed as well.
CAL FIRE says it will be using the Castle Peak parking lots at the entrance to Northstar as their Incident Command Post (ICP) for the fire. Do not enter or park in these lots while they are being used for the incident.
At this time, there is no threat to the Northstar area.
Floriston Update (Thursday, 8:00 a.m.)
— CAL FIRE Nevada-Yuba-Placer Unit (@CALFIRENEU) September 17, 2026
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. pic.twitter.com/Rz0wTbf95x
According to CAL FIRE, the fire is threatening I-80, the Truckee watershed, and nearby natural resources. Additional air and ground resources have been requested.
NV Energy is reporting 131 customers without power due to the fire. There is no estimated time for power to be restored to those customers.
Evacuation information in Nevada and Washoe County
Nevada County has issued an evacuation order and warnings in the following zones:
People in the red area must leave now. See the latest evacuation information at Genasys Protect.
Multiple "Be Ready to Evacuate" zones in Washoe County have been lifted, per the Perimeter Evacuation Map.
See a live map at Perimeter Map.
Anyone affected by the evacuations from the fire in Floriston is eligible for a discounted rate of $49 a night with no resort fees at J Resort. Rate code to book online is: Flor26
The Silver Legacy, Eldorado, and Circus Circus Reno are offering emergency room rates for evacuated people of $59 per night with no resort fees. To book a room, please call 1-800-223-7277 or book online using code SCLOC26.
Grand Sierra Resort is offering evacuees and fire crews a special $59 room rate with resort fees waived, along with complimentary RV and trailer parking for those displaced by evacuations.
The special hotel rate is available Wednesday and Thursday nights, based on availability. Limited room availability is expected over the weekend due to previously booked business. Evacuees and fire crews can check current availability at GrandSierraResort.com/Evacuee or call the resort at 775-789-2000 and mention the code “EVACUEE.”
Potential power impacts
Tahoe Donner Public Utility Districts says they are monitoring the fire and its potential impact power service in the Truckee area.
While the fire is not currently threatening Truckee, it has the potential to threaten the NV Energy transmission lines that deliver power from Verdi.
If NV Energy opts for an emergency de-energization of the transmission line, all TDPUD customers would lose power without advance notice.
The utility recommends customers take precautions to prepare for the possibility of an outage.
Air Quality
Northern Nevada Public Health has issued an Air Quality Advisory for the Reno-Sparks area due to smoke from regional wildfires, including the Floriston and Dome fires, until further notice.
As of 5 p.m. on September 16, the Air Quality Index (AQI) has reached the Unhealthy for Sensitive Groups (USG) range, with an AQI of 109 in the Verdi area. The AQI in the Reno/Sparks area is in the moderate or good range (Learn more about AQI Ranges).
AQI in Eastern Sparks and Spanish Springs may reach the Moderate to USG range this afternoon and into Thursday morning due to the Dome Fire, based on air quality models and sensors.
