I did this hike last July so a full report of this very strenuous trail can be found here. Therefore, I'll try to keep this post short and sweet and mostly focus on the snow conditions.
The weather was forecast to be near perfect so my buddy and I headed out very early to climb Mt. Teneriffe. We hit the trail shortly before 6 AM and returned to the car shortly before 1 PM. The climb was as tough as I remembered and my buddy was cursing me under his breath for not fully revealing the difficulty in advance.
With the recent increased avalanche forecast (see the Northwest Avalanche Center website on the Favorite LInks page) due to the very warm weather we wanted to get on and off the snow as quickly as possible. The snow was very hard inside the trees early in the morning and we had a difficult time until we found some previously kicked-in steps. We had both brought snowshoes but they weren't used. I did use microspikes for traction and my buddy was definitely jealous. The snow was about 4 feet deep in places based on what we saw in the tree wells.
On top was some exposed rock to relax on safely but the far side of the slope is very steep (deadly). The views were fantastic. We could clearly see downtown Bellevue, downtown Seattle, the Olympics, Mt. Rainier, Mt. Baker, Glacier Peak, and many other mountains.
By the time we were headed down around 10:30 the snow was getting soft and slushy. We slipped and slid and at one point chose to slide down a section of snow slope on our bottoms rather than deal with trying not to fall. I would not want to be on this slope in the afternoon. With the continued warming weather I wouldn't expect the snow to last for too much longer.
Below are a few pictures and a couple of videos - the former is Kamikaze Falls, the latter is the view from the summit.