After Mud Flows, Two Middle Fork Nooksack Trails Still Dangerous
On May 31, an enormous debris flow—a slurry of mud, boulders, trees and anything caught along the way—slumped into the upper Middle Fork Nooksack Valley at the receding toe of Deming Glacier on the southwest side of Mt. Baker. Two smaller debris flows occurred on June 1 and 6, and scientists and agencies monitoring the area say that more flows are possible.
Avoid Elbow Lake, Ridley Creek trails
“If you feel ground shaking and hear rumbling like an approaching freight train, get off the valley floor as quickly as possible, a debris flow can travel a lot faster than you can run,” says Carolyn Driedger, hydrologist and public information officer at the USGS Cascades Volcano Observatory in Vancouver, Wash.
Need an alternative in the North Cascades? Head up the North Cascades Hwy, and check out Thunder Knob instead.
Mud flows common in glaciated volcano valleys
Debris flows—fast-moving slurries of boulders and mud—are sporadic events in the valleys of glaciated volcanoes due to the abundance of loose volcanic rock, excess water, steep slopes, and confining valley walls. These kinds of events are not uncommon at Mount Rainier and at Mount Hood, for example, and have happened before on Mount Baker and nearby Glacier Peak.
>> Mount Baker Volcano Research Center blog
>> Mount Baker-Snoqualmie National Forest
Video from the valley
While we do not recommend visiting the area or hiking the valley floor until the flows have ceased, you can see a video of the area after the most recent flow: