Open fields of recent avalanche debris on the lower slopes of Snoqualmie Mountain provide a constant reminder that, even on a day of low avalanche risk, the route to Snow Lake requires constant reappraisal.
We started from Alpental at 8am on the northeast side of the creek to Source Lake, but soon found ourselves ascending too high too quickly up to a viewing area with a snow-carved double bench that would have provided a picturesque scene of the valley below on a clearer day. The first few chute crossings felt solid, but we were finally turned back at a flume with steep, soft sides. On its far side was an exposed, steep and corniced ledge, and the only other suitable crossing we could see was far below.
After backtracking and turning around at another steep, open slope, we finally retraced our steps close to the start of the trail, where we stayed on lower ground and navigated a path around the wide drainages of chutes we had crossed above and through the lower forest where we were greeted by hungry Whiskey Jacks.
At the plateau overlooking Source Lake, we saw groups of snowshoers, skiers and snowboarders, many of whom had followed the southwest side of the creek and had been listening to slides on that side of the ridge throughout the morning. We lunched on cucumber, spinach and hummus sandwiches with warm tea for the final northwest push to the divide on the eastern shoulder of Chair Peak and down to Snow Lake.
As the afternoon warmed, the more consolidated snow of the morning became a slushy oatmeal. With the vertical slope of the last fifty-foot pitch to the shoulder at Chair Peak's base, the snow began to feel particularly unstable and wet, and new steps would have been precarious and loose. The two climbers who had been to the top ahead of us said the obscured views down were not worth the effort of those last few feet. Since we were at our turn-around time of 2:30pm, since the slopes were warming, and since we were already exhausted from breaking trail (and in my partner's case, post-holing), we turned our backs on Chair Peak.
The steps we pounded on the way up provided little support and we easily triggered small, loose, wet slides as we bounded directly down towards the Source Lake basin and the route to Alpental. After a few glissade attempts on steeper sections of the forested lower trail with soft landing zones, and after a quick side trip to a small waterfall off the main creek, we were back at our car a little before 5pm.