SAN JOSE, Calif. — The California snowpack is the largest the state has seen at this time of year in over two decades, as yet another atmospheric river is forecast to dump several feet of additional snow in parts of the Sierra by Monday morning. In the wake of all this fresh snow, experts are expressing increasing optimism that the drought conditions which have gripped the Golden State for three years could meaningfully ease by the end of the snowy season. “The fact that we’re continuing to get this precipitation is just absolutely fantastic,” said Andrew Schwartz lead scientist at the Univers…