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Avalanche Forecast

Archived

Apr 6th, 2023–Apr 7th, 2023

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

Regions

Lizard-Flathead, Akamina, Flathead, Lizard, Moyie.

Before committing to your line, check for signs of windslab instability like shooting cracks, or fresh avalanches.

Confidence

High

Avalanche Summary

Recent reports of avalanche activity have been limited to small (size 1) loose snow avalanches in steep, alpine features that face the sun.

If you head out in the backcountry, let us know what you are seeing by submitting a report to the Mountain Information Network.

Snowpack Summary

Dry, powder snow remains on shaded (northerly) slopes. Moist snow or thin crusts exist on solar slopes and all aspects below ~1700 m.

The mid-snowpack is generally well-settled.

The lower snowpack includes a layer of weak sugary crystals near the ground. This layer has not produced recent avalanche activity in this area, but professionals continue to monitor for signs of it becoming active.

Weather Summary

Thursday Night

Mostly clear. No new snow/rain expected. Moderate southwest ridgetop wind. Freezing level 2000 m. Treeline temperature around -2°C.

Friday

Mostly sunny. No new snow/rain expected until the evening. Moderate southwest ridgetop winds. Treeline temperature around 0°C. Freezing level 2200 m.

Saturday

Cloudy. 5-10 cm of snow expected overnight in the alpine, light flurries continuing through the day. Moderate southwest ridgetop winds, trending to strong at higher elevations. Snow level around 1500 m.

Sunday

Mostly sunny. No new snow expected. Moderate southwest ridgetop wind, trending to strong at higher elevations. Freezing level rising to 2500 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Pay attention to isolated alpine features as well as cross-loaded features at treeline.
  • Use caution above cliffs and terrain traps where even small avalanches may have severe consequences.
  • The more the snow feels like a slurpy, the more likely loose wet avalanches will become.

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.