We finally have a trail conditions report this year! Walter R hiked up above Mirror Lake on March 16. He drove all the way to the Portal, and then hiked. His pictures are here: Snowshoe to Trailside Meadow
Walter used snow shoes starting several miles up the trail. Some of his pictures are from off-trail routes. Hikers unfamiliar with the area will find tracks in the snow leading all over the place, not necessarily following the trail. This occurs every spring when snow makes trail travel difficult, and some shortcuts are more appealing.
Several of Walter's pictures:
The first stream crossing (North Fork Lone Pine Creek)
The log crossing
Bighorn Park (Outpost Camp is in the trees) Mirror Lake behind the higher trees. Wotans Throne above that, and Mt Whitney peaking out.