Atmospheric rivers happen all over the planet, but a Pineapple Express refers to a specific recurring atmospheric river that hits the U.S. West Coast.

The Pineapple Express is a stream of moisture in the atmosphere that delivers humid air from the tropical Pacific to the West ...

This story was updated to correct spelling in headline. An atmospheric phenomenon called a Pineapple Express is expected to bring heavy rains and snowfall to California and the Northwest this week.

What's an Atmospheric River? A Pineapple Express? AP Explains the Weather Phenomenon Atmospheric rivers are a plume of moisture that extend across the Pacific to near Hawaii. When they hit land ...

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