A weather pattern called the Pineapple Express is driving feet of snow in the Rocky Mountains. Here's where the term comes from and how it forms.

Atmospheric rivers are long and relatively narrow bands of water vapor that form over an ocean and flow through the sky, ...

At San Francisco State University on Wednesday afternoon, grey skies loomed over a group of Alphi Phi members who were ...

The “strongest storm of the winter” is currently hitting California (USA). Authorities are warning of a high risk of flooding ...

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

A tight storm system named Winter Storm Jett will force a potent branch of the pineapple express ashore across the West Coast, bringing heavy rain and snow across the region. The atmospheric river ...

New Englanders stocked up on both Super Bowl snacks and staples like bread and milk this weekend ahead of a fast-moving storm that dropped up to a foot of light, fluffy snow.

On the heels of a pair of slow-moving Pineapple Express storms this week, a dry weekend is forecast in Ojai with another, ...

A Pineapple Express forms when the jet stream dips south into the tropical Pacific near Hawaii, scooping up warm, moist air ...

San Francisco broke a daily record for rain that had been in place since 1887 on Tuesday, with a pounding 2.53 inches of rain ...

Light rain continued to fall across Southern California on Wednesday afternoon as the first in a series of Pacific storm ...