The extreme heat wave over Calif is the weather pattern that brings thunder and rain to the Sierra. Good luck.
If you are camped at Trail Camp, get up as early as possible, start for the summit at or before 6 AM. Leave the summit by 10 AM.
If thunderheads are forming by the time you reach trail Crest on the way up, it would be wise to turn around.
Many people continue to the summit in the face of hail and thunder. It is amazing more don't die in those conditions.
