Mt. Shasta – Avalanche Gulch
Cascades, CA
Elevation Profile
Current Conditions
Bottom Line
Clean avalanche bulletin with no identified problems and perfect summit weather window through Saturday. Get on route early Friday — winds build to 25-35 mph at ridgeline by Saturday.
49°/32°F · Sunny
Low (1/5)
48" depth
Normal flows · 5 gauges
No active fires within 50 miles
11h 46m daylight · Sunrise 7:27 AM · Sunset 7:13 PM
Full Briefing
This is as good as March gets on Shasta. Low avalanche danger across all elevations with no identified problems means the snowpack is stable and consolidated after recent settlement. Annie Springs SNOTEL at 6,021 feet shows 35 inches of settled snow with a declining trend indicating good bonding, not dangerous melt at these temperatures. The approach through Avalanche Gulch and standard route to the summit crater should be straightforward with no special avalanche precautions beyond normal glacier travel protocol.
Weather delivers a textbook summit window through Friday night. Clear skies with highs in the mid-40s at basecamp translate to manageable summit conditions around 20-25°F. Current northwest winds of 15-25 mph at valley level mean expect 30-50 mph gusts at ridgeline and summit — strong but workable for experienced mountaineers. Wind direction stays consistent northwest through your window, so the standard route's northeast-facing approach stays relatively protected.
Saturday brings a weather shift with winds increasing to 25-30 mph in the valley, meaning 50+ mph sustained at elevation with gusts potentially hitting 70+ mph. This puts Saturday in the marginal category for summit attempts. The 14% precipitation chance Saturday afternoon could bring cloud cap and visibility issues above 12,000 feet even if it stays dry at basecamp.
Plan your summit bid for Friday morning with an alpine start by 3 AM to reach the summit by noon and descend before any afternoon weather development. The 11 hour 46 minute daylight window is adequate but not generous — headlamp navigation will be required for the approach and potentially the descent. If you miss Friday's window, Saturday morning could work but expect a much more physical day fighting wind above Helen Lake.
Waypoints
Bunny Flat Trailhead
Trailhead at Bunny Flat. Self-register for permits here.
6,791 ft
Horse Camp / Sierra Club Hut
Historic stone hut. Spring water available. Good acclimatization camp.
7,999 ft
Helen Lake
High camp at Helen Lake. Snow camping on the glacier.
10,200 ft
Red Banks
Volcanic rock band. Crux of the route. Bergschrund crossing early season.
12,999 ft
Mt. Shasta Summit
Summit at 14,179 ft. Sulfurous fumaroles near the top.
14,180 ft
Route Details
Distance
11.5 mi
Elevation Gain
7,500 ft
Elevation Loss
7,500 ft
Max Elevation
14,180 ft
Estimated Days
2
Trailhead
Bunny Flat
Best Season
May through July for best snow conditions. Later season is loose scree.
Permit Required
Summit pass ($25) and wilderness permit required. Available online or at the ranger station in Mt. Shasta city.
About This Route
Avalanche Gulch is the standard climbing route on Mt. Shasta (14,179 ft), a massive volcanic peak in northern California. The route is a non-technical snow climb but requires crampons, an ice axe, and self-arrest skills. The sheer vertical gain—over 7,000 feet from trailhead to summit—makes it one of the most demanding day climbs in the lower 48. The route ascends from Bunny Flat through the Sierra Club hut area, past Helen Lake (a common high camp), and up the steepening Avalanche Gulch to the Red Banks—a band of volcanic rock at 13,000 feet. Above the Red Banks, the route traverses Misery Hill before the final push to the summit. Alpine starts (1-2 AM) are essential to catch firm snow and avoid rockfall in the gulch. The mountain creates its own weather and can go from sunny to whiteout in minutes. A summit pass and wilderness permit are required. Wag bags are mandatory for human waste above treeline.
Plan This Route
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Plan This Route