After weeks of dry weather, an atmospheric river event is expected to begin Friday, kicking off a dramatic flip in the forecast for Lake Tahoe and the Sierra Nevada. The storm system is forecast ...

A winter weather advisory took effect early Friday for Lake Tahoe, with an atmospheric river driving successive storm systems through the weekend and into next week. About noon Friday, chain ...

But what is an atmospheric river? Here's a look at the upcoming weather patterns in Reno and Lake Tahoe as well as the weather terms you might hear in the upcoming days. What is an atmospheric river?