However, a cold snap has blown through the mountains, snowing them in.

然而，一股突如其来的寒流经此山峰，他们被雪困住了。

The National Weather Service forecasts mountain snow to move from the Pacific Coast to the Plains states.

美国国家气象局预测，山区降雪将从太平洋海岸移至平原各州。

So these river in the skies, the atmospheric rivers, we keep talking about produce significant heavy rainfall and mountain snow.

我们刚刚谈论的这些天空中的河流，大气中的河流能产生大量的暴雨和山雪。

The amount of snow in the Sierra mountain is 75% below normal. This mountain snow melts in the spring and fills rivers.

塞拉山的降雪量比正常要少75%，山上的积雪在春天融化并流满河流。

Lagos said the top layers of mountain snow are melting faster than in the past or are turning straight into a gas, or vapor, through a process called sublimation.

拉各斯说，山顶积雪融化的速度比过去更快，或者正在通过升华直接变成蒸汽。

Out West, heavy rain, plus forecast of mountain snow factored into the fact that 77 million Americans were under some sort of winter weather advisory in recent days.

在西部，大雨加上山区降雪的预报， 导致最近几天有 7700 万美国人收到了某种冬季天气警告。