Mount Si peak
Mount Si rises to 4,167 ft in Pacific-Ranges within the Cascade Range range.
Standing at an elevation of 4,167 feet (1,270 meters), it offers breathtaking panoramic views of the surrounding Cascade Mountains and the Snoqualmie Valley. The mountain is situated within the Mount Si Natural Resources Conservation Area, which encompasses approximately 4,167 acres (1,686 hectares) of diverse ecosystems.
During the winter season, Mount Si receives a significant amount of snowfall. The snowpack range can vary depending on weather conditions, but it generally accumulates from late fall to early spring, providing opportunities for winter sports enthusiasts such as snowshoeing and backcountry skiing. It is advisable to check current snow and weather conditions before planning a winter ascent.
Several creeks and rivers benefit from the runoff generated by Mount Si. The most notable among them is the South Fork Snoqualmie River, which originates from the melting snow and glaciers on the mountain. This river serves as an important water source for nearby communities and supports a variety of aquatic life.
The name "Mount Si" has an interesting history. It is believed to have been derived from the local Snoqualmie tribe's name for the mountain, "Tah-a-ko-kwoy," which means "small mountain." The current name "Mount Si" was given by railroad surveyor, Josiah Merritt, in the late 1800s. The mountain holds significance in local lore and legends, including stories of mythical creatures and supernatural phenomena associated with its unique formation.
In conclusion, Mount Si is a captivating mountain within the Pacific Ranges mountain range. Its impressive elevation, diverse ecosystems, significant snowpack during winter, and contribution to the surrounding creeks and rivers make it a popular destination for outdoor enthusiasts. The mountain's rich history, indigenous name, and intriguing legends add to its allure, making it a must-visit location for those seeking adventure and natural beauty in the Pacific Northwest.
For trail conditions and access, search Wikipedia or the local land manager's site. Browse other peaks in the Pacific-Ranges range.
Snowpack near Mount Si
Snow water equivalent and snowpack depth at SNOTEL stations near the peak. Best proxy for what's currently sitting on the summit.
| SNOTEL station | Snowpack | View |
|---|---|---|
| Crystal Base | 0 in | → |
| White Pass Upper | 8 in | → |
| Paradise | 2 in | → |
| Nohrsc Rex River | 167 in | → |
| Nohrsc Alpine Meadows | 1 in | → |
| Crystal - Campbell Basin | 2 in | → |
| Meadows Pass | 1 in | → |
| Stevens Pass - Grace Lakes | 7 in | → |
| Alpental Mid-Mountain | 9 in | → |
| Cougar Mountain | 1 in | → |
| Yline | 1 in | → |
| White Chuck Mountain | 1 in | → |
Streamflow near Mount Si
USGS streamgauges in the basin drained by this peak. Spring snowmelt from the summit feeds these flows.
| Gauge | Streamflow | View |
|---|---|---|
| Sultan River Below Diversion Dam Near Sultan | 108 cfs | → |
| Skykomish River Near Gold Bar | 1,190 cfs | → |
| Cowlitz River At Packwood | 995 cfs | → |
| Sultan River Below Powerplant Near Sultan | 314 cfs | → |
| South Fork Sultan River Near Sultan | 46 cfs | → |
| Snohomish River Near Monroe | 3,100 cfs | → |
| Pilchuck River Near Snohomish | 270 cfs | → |
Weather Forecast
Same NOAA / yr.no feed Snoflo's iOS app uses. Watch the precipitation column -- snow at this elevation typically lags the radar signature by a few hours.
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day forecast
Daily temperatures, snow, and rain projected over the next two weeks.
What's around Mount Si
Ski areas, river runs, fishing spots, campgrounds, parks, reservoirs, and boat launches within driving distance of Mount Si.
Ski areas
- Stake Lake
- Ski Callaghan (Whistler Olympic Park)
- The Summit At Snoqualmie
- Hemlock Resort
- Mt. Hood Skibowl
- Manning Park Resort
River runs
- Confluence With Taylor River To Confluence With North Fork Snoqualmie River
- Wagner Bridge To Confluence With Middle Fork Snoqualmie River
- Snoqualmie Falls To Plum's Landing
- Quartz Road To Confluence With Middle Fork Snoqualmie River
- Alpine Lakes Wilderness Boundary To Quartz Creek Road
- Outlet Of Snoqualmie Lake To Alpine Lakes Wilderness Boundary
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