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Avalanche Forecast

Archived

Apr 9th, 2022–Apr 10th, 2022

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

Regions

South Rockies.

Check for pockets of wind slab around steep and high-consequence alpine features.

Confidence

Moderate - Forecast snowfall amounts are uncertain.

Weather Forecast

Saturday night: Blustery with alpine flurries, up to 5 cm. Light southwest wind. Ridgetop low -16 C.

Sunday: Bands of convective moisture producing localized flurries 5-15 cm. Light west wind. Freezing level near valley bottom, ridgetop high -3 C.

Monday: Overnight flurries with up to 15 cm by late morning. Light but gusty east wind. Ridgetop high -6 C.

Tuesday: Cloudy with isolated flurries. Moderate east wind. Ridgetop high -6 C.

Avalanche Summary

Wet loose avalanches to size 1.5, pinwheeling, and roller balls were reported on Thursday with warm temperatures.

Snowpack Summary

Up to 10 cm recent snow covers a crust on all aspects except high north terrain. Multiple crusts exist in the upper snowpack. The mid and lower snowpack is well settled and bonded.

Terrain and Travel

  • Watch for wind-loaded pockets especially around ridgecrest and in extreme terrain.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.

Problems

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind 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.