Lake Tahoe Long Range Weather Forecasts – For Skiers and Snowboarders who frequent the resorts and back country San Jose Earthquakes midfielder Matheus Silva was swimming in South Lake Tahoe early Tuesday when he cried out for help as the sun began peeking over the Sierra. Then he went under the icy water. Friends thought the 6-foot-2. Cliff Mass, regional weather guru and University of Washington scientist, is betting on…