Atmospheric rivers are a “long, narrow region in the atmosphere—like rivers in the sky—that transport most of the water vapor outside of the tropics,” according to the National Oceanic and Atmospheric ...

"Multiple rivers downstream of Mount Rainier are expected to approach or forecast to break record levels," one meteorologist said.

Name a river that feeds into Puget Sound, and it's likely to flood this week. Here's a rundown of what rivers will likely see major flooding and when.