Alerts & Conditions



Current Conditions

Last updated: 5/18/2024 | You may need to reload page to see updates.

The Conditions Summary section below includes current information about about seasonal conditions, closures, fire and air quality, and other current information.
  • The park is open year round, however vehicle access is limited to the main park entrances thorughout the snow season (generally November through April).
  • Reservations are not required or accepted to enter Lassen Volcanic.
    • You may enter the park at any time, 24 hours a day. A 7-day or annual pass is required to enter; and may be purchased online.

AnchorAnchorStatus of Roads in the Park

Lassen Volcanic National Park Highway and other park roads close to vehicle access during the winter snow season, typically November through May.

Refresh your browser (hit F5) to view the most recent information.

Road Section

Information and Conditions

Current Status

Lassen National Park Highway

Lassen National Park Highway closes seasonally to vehicle access through the park upon substantial snow accumulation. Read below for more information on vehicle access.

Road snow clearing operations are currenlty taking place.
Learn more for up-to-date information on cleared sections of the road for hiking and biclycling opportunities.

  • Vehicles can drive one mile from the Kohm Yah-mah-nee Visitor Center to the Sulphur Works parking lot; limited parking available.
  • Vehicles can drive ten miles from the Loomis Plaza to the Devestated Area parking lot.


Butte Lake Road

4-wheel or all-wheel drive, high clearance vehicles are not necessary. Low clearance vehicles drive slow and with caution. The 6-mile-long road begins off of Hwy 44 east of Old Station.
Previously cleared to one lane. New snow on 5/4. Snowy and muddy conditions on road. Travel at your own risk.


Warner Valley Road

Road is not recommended for RVs, trailers, and low clearance vehicles. The 17-mile-long remote road begins off of Hwy 36 in Chester. The last 3-mile section is unpaved/dirt.


Juniper Lake Road

Recommended only for high-clearance vehicles. Road is generally not advised for RVs, trailers or vehicles with very low clearance.This remote road travels north from Chester (Hwy 36E). It is paved for the first 6 miles. The remaining 7 miles are rough gravel and rock. A section of the county road just before the park boundary has large rocks and hazards.



Roads to the Park

Check conditions for area roads (map of the area) on the CalTrans QuickMap or Highway Conditions lookup page; or view current conditions on CalTrans webcams. The park does not determine chain control restrictions - this is determined by CalTrans. Please go to the CalTrans website for area chain control information.

State Route (SR) 44/89 provides access to the Northwest Entrance/Manzanita Lake Area
State Route (SR) 36/89 provides access to the Southwest Entrance / Kohm Yah-mah-nee Visitor Center

Area Map of Lassen Volcanic National Park

Area Map of Lassen Volcanic National Park


Visitor Centers

Visitor Center

Information and Conditions

Current Status

Kohm Yah-mah-nee Visitor Center

*Open Daily 9:00 am to 5:00 pm.
Lassen Association Park Store is Open Daily 9:00 am - 5:00 pm.
Lassen Cafe & Gift Shop is Open Friday-Sunday 9:00 am - 5:00 pm.

*Extreme weather conditions may limit hours. See Alerts above for current information.


Loomis Musuem Loomis Museum is closed until May 24, 2024.

Lassen Association Park Store in the Loomis Residence is open Friday-Sunday 10:00 am-4:00 pm.



AnchorWeather, Webcams & Snow Depths

Snow depths are updated when there is a significant change. Learn more about Lassen's snowpack and snowpack surveys.
There are no regular patrols into the interior of the park in the winter; information is provided only for the Manzanita Lake and Southwest Areas.

Last updated - May 18, 2024

Weather Forecast


Approximate Snow Depth (Nov - Apr)

Manzanita Lake
5,900 feet


Snow-free in the general vicinity.
The campground road to the boat launch and picnic area is open to vehicles. The road is closed beyond the boat launch parking lot.
View oversnow route conditions

Southwest Entrance
6,700 feet

Facing north from back of Kohm Yah-mah-nee Visitor Center

~ 5 feet of snow througout the vicinity of the southwest entrance including all hiking trails.
View oversnow route conditions

Lassen Peak
8,250 feet

Daily sensor measurements
Monthly manual measurements (Jan - Apr).

Northern California Area

View area webcams

California Cooperative Snow Surveys

Learn about Lassen's Snowpack

Surveys typically take place around the start of every month, January through May or June.

View statewide survey information inlcluding two survey locations in the park.

Lower Lassen Peak (LLP) | Lake Helen 8200 feet elevation | Feather River Basin

April Survey
Date - March 24
Snow Depth - 193 inches/16 feet
Water content - 91 inches/7.6 feet
Density (water to snow ratio) - 47%
April 1 average for water content - 115%

New Manzanita Lake (MNZ) | Manzanita Lake 5900 feet elevation | Pit River Basin

April Survey

Date - March 29
Snow Depth - 31.5 inches
Water Content - 11.4 inches
Density (water to snow ratio) - 36%
April 1 average for water content - 142%

More Information


Last updated: May 18, 2024

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Contact Info

Mailing Address:

PO Box 100
Mineral, CA 96063


530 595-4480

Contact Us