Pineapple Express has drenched Northern California in the last few days—but what exactly is it? How common is it? Also, go 'Beyond the nugget' to learn about the polar vortex and the Santa Ana winds.

The term “atmospheric river” was coined in 1994 and has since quickly gained popularity. But what does it really mean?

To me, that’s the biggest threat — the wind,” a National Weather Service meteorologist told the Sentinel. “This is when ...

An atmospheric phenomenon called a Pineapple Express is expected to bring heavy rains and snowfall to California and the Northwest this week. What is a Pineapple Express? It's a type of ...

At atmospheric river continues to slam portions of California Tuesday, with multiple inches of rain expected until Wednesday.

Back-to-back atmospheric river storms are set to hit Los Angeles County this week — giving the region much-needed moisture ...

The wet weather fueled by an atmospheric river comes after a dry January helped ignite fires that devastated California. Here ...

While the wet weather may bring an end to a devastating run of wildfires in the state, it could also cause flooding and other hazards.

A pattern change for the West has taken shape. This weekend, moisture moved in from Hawaii courtesy of an atmospheric river ...

The wet weather fueled by an atmospheric river represents an about-face after a dry January helped ignite fires that ...