An atmospheric river, known as a "Pineapple Express," is ... A forecast map from AccuWeather, shared with Newsweek, showed that parts of Northern California were expected to see heavy rain and ...

Call it an atmospheric river, a Pineapple Express or just weather, but some parts of California and the U.S. Northwest are being slammed by up to foot of rain before the storm runs out of moisture ...

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 ...

A special type of atmospheric river is called a Pineapple Express. They form when low pressure is west of California with high pressure to the south near Mexico. That's what happened this week.