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🎿 Backcountry touring · CaliforniaDonner Summit: avalanche danger & snow
Castle Peak, Mt. Judah and Tinker Knob off I-80 near Sugar Bowl. Heavy Sierra storms and easy access.
This is not a safety call. The danger rating shown is a one-word summary copied from the official avalanche center once a day. Conditions change by the hour and vary by aspect and elevation. Before you go into avalanche terrain, read the full forecast from the official center, carry a beacon, shovel and probe, and travel with trained partners. Snowfall numbers are computer-model estimates, not measurements.
Sierra Avalanche Center has not issued a danger rating for this area today. That usually means early or late season. It does not mean the snow is safe.
📏 Nearest SNOTEL
0.3 in snow water equivalent
NRCS SNOTEL Css Lab (6,890 ft, 3.3 km away), daily reading for Nov 3.
Snow data as of Nov 4, 2026, 4:05 PM MT (model snowfall at about 7,198 ft).
7-day snow forecast
Daily snowfall (inches) and high/low (°F) from the Open-Meteo forecast model, local days.
Ski resortTouring zone: LowTouring zone: ModerateTouring zone: ConsiderableTouring zone: HighTouring zone: ExtremeTouring zone: No rating
Map pin is an approximate trailhead or pass location, not a route. Use a real map and the forecast center's zone map for trip planning.
Nearest ski resorts
- Sugar Bowl Resort · 2 km · 72 h 0.2"
- Soda Springs · 4 km · 72 h 0.1"
- Palisades Tahoe · 16 km · 72 h 0.7"
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More touring zones in California
- Carson Pass · No rating
- Mammoth Lakes Basin · No rating
- Mount Shasta (Bunny Flat) · No rating
- Rock Creek (Eastern Sierra) · No rating
- Virginia Lakes (Bridgeport) · No rating
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