Overview

• An ongoing atmospheric river event is causing heavy rainfall, snow, and potential flooding across the Pacific Northwest, with over 10 million people under flood watches.
• Washington’s Olympic mountains could receive as much as 10 inches of rain, and the Cascades could see between 5 to 9 inches.
• The sequence of back-to-back atmospheric rivers, called an AR family, began Saturday and will continue across this region through Wednesday without much of a break period in between systems.
• Parts of Utah and Colorado received snowfall on Monday, bringing total snowfall throughout the atmospheric river events to several feet in some places.
• Portland, Oregon; Eugene, Oregon; Seattle, Washington, and several other areas were at risk for up to 12 inches of rain through Sunday.