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Avalanche Forecast

Archived

Mar 9th, 2026–Mar 10th, 2026

Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely, human triggered possible.
Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches unlikely, human triggered possible.
Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches unlikely, human triggered possible.

Regions

Manning, Skagit.

Snow and wind continue to create fresh slabs atop a widespread crust from the weekend.

Confidence

Moderate

  • We are uncertain due to a limited number of field observations.

Avalanche Summary

We do not have any recent reports of avalanches, but suspect a natural cycle occurred over the weekend with rain, warm temperatures, and strong winds.

Despite the cooler temperatures, avalanches remain possible with ongoing snow and wind forming slabs atop a widespread crust.

Snowpack Summary

Snow continues to accumulate along with strong southwesterly alpine winds. A crust from last weekend's rain is likely present at most elevations, except possibly in isolated high alpine areas.

On north aspects, 50 to 150 cm below the surface, two persistent weak layers exist (buried in late January and early February) and contain facets over a crust. It remains uncertain whether the recent warm conditions had any stabilizing effect on the reactivity of these layers.

Weather Summary

Monday Night
Mostly cloudy. 1 to 10 cm of snow. 30 km/h west ridgetop wind. Treeline temperature -10 °C.

Tuesday
Mostly cloudy. 5 to 10 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -10 °C.

Wednesday
Mostly cloudy. 15 to 25 cm of snow. 50 km/h southwest ridgetop wind. Treeline temperature -8 °C.

Thursday
Mostly cloudy. 10 to 25 cm of snow. 60 km/h southwest ridgetop wind. Treeline temperature -7 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for fresh storm slabs building throughout the day.
  • Avoid freshly wind-loaded terrain features.
  • Avoid shallow, rocky areas where the snowpack transitions from thick to thin.

Problems

Storm Slabs

Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-slabs that form over a persistent weak layer (surface hoar, depth hoar, or near-surface facets) may be termed Persistent Slabs or may develop into Persistent Slabs.