There has been a lot of talk about the term “atmospheric river” in the last month or so. Some feel the term is now being overused or even misused. So what is an atmospheric river? The term first ...

PORTLAND, Ore. (KOIN) — The wet and windy weather felt across the Pacific Northwest is thanks to a long band of water vapor stretching across the Pacific Ocean. An atmospheric river continues to ...

PORTLAND, Ore. (KOIN) — After a mostly dry start to the month of December, the weather pattern is quickly changing to a rainy one. Thursday’s rain showers will mark the first in a series of wet storm ...

We have a very active weather pattern that will impact the region this week as an atmospheric river takes aim at the Pacific Northwest. Our temperatures are trending above average in the upper 40s to ...

A powerful atmospheric river is set to bring heavy rain, strong winds, and mountain snow to the Pacific Northwest. The storm system also poses a risk of flash flooding and mudslides for parts of ...