Heavy rain​ has triggered flooding, rescues and road closures in Washington state, with Gov. Bob Ferguson declaring a statewide emergency​.

MONROE, Wash. — A blast of arctic air swept south from Canada and spread into parts of the northern U.S., while residents of the Pacific Northwest braced for possible mudslides and levee failures from floodwaters that are expected to be slow to recede.

On Monday, Dec. 8, the National Weather Service (NWS) issued a wide range of winter weather warnings for the U.S., from 14 inches of snow in certain areas of

The moisture from this storm system will help two fast-moving winter storms spread snow across the eastern U.S., with another atmospheric river on its way.

The Pacific Northwest is expected to see up to seven inches of rain this week, as the eastern United States braces for arctic cold.

Now that hurricane season is over, the Hurricane Hunters at Keesler Air Force Base are tracking another kind of atmospheric phenomenon. These are pictures of the two Keesler-based WC-130J Super Hercules Aircraft patrolling the skies over the Pacific Northwest to monitor an atmospheric river.

An atmospheric river event that's been slamming the Pacific Northwest with rain is now focused on western Washington.

National Weather Service (NWS) meteorologists have issued widespread warnings across the Pacific Northwest as an atmospheric river moves onshore, bringing the threat of floods, strong winds, and heavy rain.