Yosemite National Park has said that Glacier Point Road will open at noon on May 27,2011. Tioga Pass is still closed. The Park’s current report for Tioga Road:
“Crews are working east from Olmsted Point. Mono County & Mammoth Mountain crews are working between Marmot Dome and Spring hill. Once plowing of the Tioga Road is completed, additional work must be completed before the road can safely be opened.”
You follow the progress of Tioga Road plowing at: Tioga and Glacier Point Roads Plowing Update
Natural History Wanderings 
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