Amid a coast-to-coast barrage of winter storms, a firehose of moisture is poised Thursday to bring heavy rains and high winds ...

What is a Pineapple Express? It's a type of atmospheric river that forms a long, narrow tract in the Earth’s atmosphere. This jet stream gathers moisture from the tropics near the equator and ...

The Bay Area weather forecast has more rain and wind as another atmospheric river arrives and flood evacuations are issued ...

The weather phenomena are common for California winters, but they could cause dangerous debris flows or mudslides in recently ...

Weather balloons and “hurricane hunter” planes aid the science of understanding California’s atmospheric rivers.

Another atmospheric river is expected to bring heavy rain to most parts of California this week, raising concerns over flooding on the heels of an earlier system that broke daily rainfall records ...

SAN FRANCISCO – A series of "atmospheric river" storms aimed at Northern California have already caused flooding, downed trees, landslides and at least one house on a scenic river to slide into ...

The first in what’s expected to be a series of three atmospheric river storms has arrived in California. Forecasters are hopeful the winter storms might finally lift Los Angeles County from the ...

A stronger atmospheric river is set to hit Northern California on Monday and then hit Los Angeles County on Tuesday, aiding hopes of a more definitive end to a devastating fire weather season for ...

The atmospheric river is being driven by a low pressure system midway between Hawaii and the West Coast, as well as a secondary low-pressure system offshore of the Pacific Northwest. Both are ...