Sonora Pass through the Sierra Nevada is Now Open
The Sierra Nevada are still nevada, but channels in deep snow cut through by plows open the roads a bit earlier than the snow would otherwise melt off.
As noted a few days ago, Tioga Pass in Yosemite Might Open around May 11, but Sonora Pass just to the north is now open according to Dennis Mattinson of the Eastern Sierra Weather Center.
Without the passes open, it’s hours of extra driving to get to the Eastern Sierra, as well as making some areas inaccessible (Yosemite in particular).
See also the CalTrans road conditions site.