El Niño and La Niña are climate phenomena that are generally associated with wetter and drier winter conditions in the ...

While most people were trying to stay out of the rain on Thursday, a group of researchers was out in the thick of it ...

An atmospheric river is a long, narrow band of moisture that oftentimes comes ahead of a storm system. It's a big source of moisture for the Western U.S. and, specifically, the Sierra Nevada and ...

Parts of Pacific Coast Highway remained closed due to heavy flooding and mudslides in Southern California, according to state officials.

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

The remnants of an "atmospheric river" will move across Arizona Friday into the weekend, but most of the river's flow will ...

An atmospheric river gathers moisture from the tropics and ... gardens healthy NAU researcher outlines new risks of warming, warns of faltering US science leadership Arizona geologist Daniel ...

An atmospheric river originating from near Hawaii known as a 'Pineapple Express,' will send copious amounts of moisture into a large portion of the Northwest and California into the new week, ...

An atmospheric river is pounding Northern California with heavy rain and the threat of flooding before heading to Southern California.

A group of scientists from Southern California recently came to the Bay Area to send up a series of weather balloons to help them study the atmospheric river event ... all of us, which gives ...