California (CA)2 Active Stations

California Sierra Nevada & Tahoe

Epic Pacific storm cycles delivering massive Sierra snowfall across Lake Tahoe and the Eastern Sierra high passes.

The Sierra Nevada range catches enormous atmospheric river moisture pulses, delivering deep Sierra cement bases topped by cold storm snow across Donner Summit, Truckee, and Mammoth Pass.

Official Avalanche Advisory Required (California Sierra Nevada & Tahoe)

FrostBurst condition ratings score snow depth and meteorological quality, NOT avalanche danger. Before backcountry skiing or mountain riding, you must check the official regional avalanche forecast and carry rescue gear (beacon, shovel, probe).

View Official Avalanche Center Forecast →
Base Depth
48"+
24 - 48"
12 - 24"
< 12"

Telemetry & Weather Stations in California Sierra Nevada & Tahoe

Regional Avg Base: 0"

Truckee / Donner Summit #2

California • 6,510 ft
--•Unavailable
Base Depth--
24h Snow--
Temp--
Awaiting live observations...USDA SNOTEL

Mammoth Pass (Eastern Sierra)

California • 9,300 ft
--•Unavailable
Base Depth--
24h Snow--
Temp--
Awaiting live observations...USDA SNOTEL

Recommended Reading for California Sierra Nevada & Tahoe Travelers

Snowpack Science

What is Snow Water Equivalent (SWE) and Why Does It Matter?

Snow depth tells you how high the snow reaches; Snow Water Equivalent (SWE) tells you how much water and mass is actually packed into that snow.

Read Article →
Snowmobiling

How Much Snow Do You Need to Snowmobile? (Trail vs. Mountain)

Clear breakdown of minimum base depth requirements for groomed trail riding vs deep backcountry mountain boondocking.

Read Article →