California, long burdened by a severe drought, is coming off one if its wettest winters in almost 20 years — but that doesn’t mean its water woes will be left behind. The Sierra Nevada snowpack, which provides 60 percent of the state’s water, held an unusually immense amount of snow in January, according to data released Tuesday. That means more water for the region in the coming months. However, experts warned the abundance of the season was just an anomaly, not something to be counted on as the climate gets progressively warmer overall.