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.

Atmospheric rivers are a plume of moisture that extend across the Pacific to near Hawaii. When they hit land they can cause heavy rains and snow. Here’s a look at the phenomenon: What is an ...

What is a pineapple express? It is a nickname for a strong atmospheric river in the tropical Pacific near Hawaii.

What is a pineapple express? It is a nickname for a strong atmospheric river in the tropical Pacific near Hawaii. Where did the term atmospheric river come from?