Hi, I went up Half dome with a friend yesterday. At the permit checkpoint, a ranger made us aware that the weather forecast predicted thunderstorms later. He also adviced us to us to use good personal judgement before we go up. We arrived on top at 11:13 AM, stayed for less than 5 min and went down immediately as the weather got worse and worse. By the time we went down a first storm passed hby jansfbay - Yosemite and the Sierra Nevada. News & Discussion