Two highway alerts - WA State

SR = State Route = major highway but not an interstate.

• • WSDOT ALERT: SR 14 - CLOSED in both directions at milepost 55.0 due to a debris slide – 7-miles east of Carson, WA
  • WSDOT ALERT: SR 4 - CLOSED in both directions between mileposts 13.0-13.7, due to flooding – 4-miles west of Grays River

These are both in the South of the state near the border with Oregon.  This is where the Atmospheric River was forecast to hit and hit it did. The Columbia River is not showing that much of an increase but its water flow is tightly regulated by the dams. Keeping an eye on this - not done yet...

Of course, Cliff has more:

Heavy Precipitation and the Mid-Winter Water Update for Our Region
As promised, a potent atmospheric river has hit our region, with very heavy precipitation on the upwind (windward) sides of regional terrain.

Let be begin by showing you a satellite-based view of total atmospheric moisture from late yesterday. Purple and red are the highest amounts. Satellites can sense water vapor content based on the emission of radiation by water vapor.

You can see the plume of moisture heading into us from the southwest. Amazingly, our moisture plume can be traced back thousands of miles to the western Pacific near the Philippines and Indonesia: the region of the warmest water on the planet, known as the warm pool.

Much more at the site.