SAN FRANCISCO – A series of three atmospheric ... WHAT IS A PINEAPPLE EXPRESS? The National Weather Service’s Weather Prediction Center has highlighted a large area of Northern California ...

That can quickly prompt melting, runoff and flooding and decrease the snowpack needed for California's water supply. What is a pineapple express? It is a nickname for a strong atmospheric river in ...

During the storm, KGW viewer Carrie reached out to ask if an atmospheric river is the same thing as a Pineapple Express, another term that often pops up to describe heavy rain in the Portland region.

Atmospheric ... the Mississippi River, according to the U.S. Geological Survey. When the moisture-laden air moves over mountain ranges such as the Sierra Nevada along the California-Nevada line ...