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.

WHAT IS A PINEAPPLE EXPRESS? It is a nickname for a strong atmospheric river in the tropical Pacific near Hawaii.

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: Advertisement ...

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?

Life 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.