Hi John. I'd think that the hardest part would be surviving the mosquitoes in the meadows below the Crest. I'm opting for Wyoming this summer, where the snowpack is only 110%. Bugs will be bad enough there. Maybe Kings Can late Sept. Heavy snow years like this can be wonderful visually because both Spring-like bloom and Fall color exist side by side in Sept around 9000 ft or so. But the runoff must still be quite dangerous in Yosemite at the moment.
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