Avalanche forecast

West Slopes Central

Northwest Avalanche Center
View on map

Avalanche danger

Sat
Alpine
2 · Moderate
Treeline
2 · Moderate
Below
1 · Low
Open full map
Out of date — this forecast expired 8 months ago. You’re viewing past conditions, not the current bulletin.

Highlights

This week’s storm wiped out much of the low and mid-elevation snowpack. Give rocky slopes still holding snow and corniced ridges a wide berth—what’s left  up there is wet and unstable. Road closures, landslides, and flooding will complicate travel to the mountains.

 

Avalanche problems

  • Glide Cracks

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1.5–2.5

    Depending on elevation and the extent of snow cover,  there is still a low chance of seeing glide, wet loose, and wet slab avalanches, cornice falls, or just blocks of snow shedding from rocks and cliffs. The main danger isn't so much triggering a wet avalanche on steep snow-covered slopes; it's that wet, saturated snowpacks tend to unload sporadically even after precipitation ends.

    Keep an eye on what is above you if you make it into the mountains on Friday, and don't linger under anything else that looks wet, sketchy, and poorly attached to the mountain. You might find new snow and fresh wet avalanches if you make it to upper elevations. Pay attention to new snow depths and rising snow levels as you gain elevation.

     

    (1/26/2025)

    An example of a glide avalanche releasing over smooth ground cover.

    Photo: Irene Henninger

Avalanche Discussion

Concern about avalanche danger seems a bit trivial compared to the damage to infrastructure and property throughout the Cascades. No direct observations of avalanche activity were reported. Difficult access and much bigger concerns kept nearly everyone out of the mountains on Thursday. It’s a safe bet that upper and some middle elevation areas experienced natural activity in the form of wet loose and other types of wet avalanches due to heavy rainfall. 

It's still a bit of a guess how much snow is left at mid elevations across the zone. The likelihood of seeing a new avalanche is low due to the end of heavy precipitation, cooling temperatures, and the fact that much of what was there to shed has already done so.  But it's hard to call it low danger when there's an outside chance a ton or two of wet snow could peel off the mountain above you.

Despite the sheer volume of rain over the past 48 hours - anywhere from 8 to 14.0 inches, depending on what station you look at - there is evidence that some new snow fell at upper elevations as temperatures cooled.  Unfortunately, any dry snow up there won't last long, with periods of light precipitation and rising snow levels heading into the weekend. While additional warming and a bit of rain shouldn't cause much additional damage at mid elevations, it could get a reaction from new snow up high.

With the warm start to the 25-26 winter season, we have less snowpack information than usual to start daily forecast operations. For zones and elevation bands with less snow than needed for avalanche hazard, we will issue a forecast with No Rating. Anticipated avalanche and weather conditions will still be updated daily. NWAC will issue an avalanche danger rating for a zone when enough snow to produce avalanches has accumulated at middle and upper elevations.

Regions covered