As a warm winter nears its end, California's Sierra Nevada snowpack is significantly below average, currently at 66% of what is typically expected. This reduction raises concerns about the state's water supply, as the snowpack is a critical source that provides about 30% of California's water. Recent rains have done little to alleviate the issue, as much of the precipitation has fallen as rain rather than snow, contributing to snowmelt and further diminishing the snowpack. This shift in precipitation patterns is attributed to global warming, which is causing temperatures to rise and altering traditional weather systems.