Trinity Alps Traverse
Klamath Mountains, CA
Elevation Profile
Current Conditions
Bottom Line
Weather is the main story — snow showers Saturday night through Sunday with lows near 28°F and a real chance of afternoon thunderstorms today. Manageable for experienced backpackers, but plan your exposed ridge crossings before noon each day. Stream crossings look fine, no fire issues.
45°/28°F · Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
Data temporarily unavailable
This data source did not respond. Try regenerating the briefing.
37" depth
Normal flows · 5 gauges
No active fires within 50 miles
13h 44m daylight · Sunrise 6:18 AM · Sunset 8:02 PM
Full Briefing
The weather pattern is active but not a trip-stopper. Today brings a 47% chance of rain showers shifting to possible thunderstorms this afternoon — get your high exposed terrain done before noon and be below ridgelines by 1 PM. Tonight drops to 31°F with a chance of snow showers, and Sunday is the coldest and snowiest day of the trip: high only 37°F, lows 28°F, snow showers likely through the day at 49% precip. By Monday conditions improve quickly — 43°F high, only 21% chance of light snow, and Monday night is mostly clear at 32°F. The snow showers over the weekend are likely to drop 1–3 inches at elevation given the temperatures and precip probabilities, so expect fresh snow on top of the existing 37-inch snowpack on north-facing high terrain. That makes navigation and traction the real challenge, not avalanche danger. Bring microspikes — hard frozen névé in the mornings transitioning to soft postholing by afternoon is exactly what late-April Trinity Alps delivers after a cold storm cycle like this.
Snowpack data is a bit noisy here — the SNOTEL stations in the raw data don't appear to be Trinity Alps stations and are likely pulling from coastal and Central Valley gauges, so treat the reported 37-inch depth as your best available estimate for the range rather than a station-specific reading. With lows in the upper 20s through Sunday night and highs staying below 45°F, snowmelt-driven flow increases are not a concern on this trip. Stream crossings at all five monitored gauges are within normal range (87–118% of median), stable or only slightly rising, and none are anywhere near the 150% threshold where crossings get sketchy. Cross the creeks early in the morning to be safe, but this is a non-issue weekend for flows.
No active fires within 50 miles and no smoke impacts expected. With nearly 14 hours of daylight and sunset at 8 PM, you have plenty of buffer to adjust your daily schedule around the afternoon weather window. The practical playbook: push hard on exposed terrain and passes in the morning, hunker for the early afternoon storm potential, and take advantage of the long evening light for camp setup and miles in sheltered valleys. Sunday is your hunker day — keep ambitions modest, stay flexible on your route, and pick a camp with good weather protection the night before.
Waypoints
Stuart Fork Trailhead
Begin at the Stuart Fork trailhead. Forested approach along the creek.
3,501 ft
Emerald Lake
Beautiful emerald-green lake in a granite cirque. Excellent camping.
6,299 ft
Caribou Lakes Basin
High basin with multiple lakes. Alpine wildflowers in July.
8,301 ft
Coffee Creek Trailhead
Exit at Coffee Creek. Arrange a shuttle back to start.
4,003 ft
Route Details
Distance
35.0 mi
Elevation Gain
10,000 ft
Elevation Loss
10,499 ft
Max Elevation
8,301 ft
Estimated Days
4
Trailhead
Stuart Fork Trailhead
Best Season
June through October. Hot in midsummer; September is ideal.
About This Route
The Trinity Alps in far northern California are one of the state's best-kept backpacking secrets. This traverse through the Trinity Alps Wilderness passes through granite peaks, alpine lakes, and dense old-growth forests with a fraction of the crowds found in the Sierra Nevada. The route connects several trail systems to create a north-south traverse through the heart of the wilderness, passing pristine lakes including Caribou, Emerald, and Sapphire. The terrain has an alpine character similar to the Swiss Alps at a fraction of the elevation, with green meadows, glacier-carved cirques, and rushing streams. The Trinity Alps see far less traffic than comparable California wilderness areas. Permits are free and self-issued at trailheads. Black bears are present—hang food or use canisters. Water quality is excellent from the many streams and lakes. The area is hot in midsummer; consider September for cooler temps and fall color.
Plan This Route
Get a personalized conditions briefing with detailed analysis for your trip dates.
Plan This Route