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Archived

Avalanche Forecast

Feb 3rd, 2025–Feb 4th, 2025
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate

Storm slabs continue to build over a weak layer and are still triggerable by riders. Be extra cautious in wind loaded terrain.

Confidence

Moderate

Avalanche Summary

Over the weekend, numerous storm slab avalanches were reported size 1-2 on all aspects and elevations. They were triggered naturally, by skiers, vehicles and explosives. Some were triggered remotely or sympathetically. Slabs were up to 60 cm deep and ran on a crust or facet layer beneath the storm snow.

Snowpack Summary

50 to 80 cm of snow fell over the weekend. Near ridgetops, recent moderate to strong southwest wind has loaded recent snow into leeward terrain features. Near the coast, the storm snow may contain a thin crust from a brief temperature spike on Friday.

This recent snow is bonding poorly to an underlying weak layer formed during the January drought. Depending on aspect and elevation, the layer may exist as a hard crust, faceted grains and/or surface hoar.

The mid and lower snowpack is well-settled and bonded with no other layers of concern.

Weather Summary

Monday Night

Mainly cloudy, up to 5 cm new snow. 20 to 40 km/h southeast ridgetop wind. Treeline temperature -8 °C.

Tuesday

Mix of sun and clouds, up to 5 cm new snow. 20 to 40 km/h southeast ridgetop wind. Treeline temperature -8 °C.

Wednesday

Clouds clearing through the day, possible trace of new snow. 10 to 20 km/h southeast ridgetop wind. Treeline temperature -6 °C.

Thursday

Mainly sunny. Light south ridgetop wind. Treeline temperature -4 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Keep your guard up as storm slabs may remain sensitive to human triggering.
  • Conservative terrain selection is critical; choose gentle, low consequence lines.
  • Avoid lee and cross-loaded slopes at alpine and treeline elevations.

Avalanche Problems

Storm Slabs

Storm slabs sit over a weak layer and remain triggerable by riders. The most likely places to trigger an avalanche are in wind-loaded lee terrain features just below ridgetops and convex rolls.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Likely

Expected Size: 1 - 2.5