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Archived

Avalanche Forecast

Mar 28th, 2024–Mar 29th, 2024
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Convex terrain features with a shallow or thin-to-thick snowpack at treeline and above are the most likely places to trigger persistent slab avalanches.

Confidence

Moderate

Avalanche Summary

Only small dry loose avalanches have been reported in the past few days.

Snowpack Summary

5 to 20 cm of new snow overlies a crust formed in mid March on all aspects except higher elevation north facing terrain where surface hoar may be present. The snow surface will become moist at lower elevations.

Numerous sun crusts exist in the upper snowpack on east through west aspects.

A widespread crust with facets above is buried 40 to 110 cm deep. Steep or convex terrain features with a shallow or thin to thick snowpack at treeline and above are the places where it may still be possible to trigger this layer.

The base of the snowpack remains a concern in shallow rocky alpine terrain.

Weather Summary

Thursday Night

Mostly cloudy with 1 to 3 cm of new snow. 10 to 20 km/h southwest alpine wind. Treeline temperature -6°C.

Friday

Mostly cloudy with 5 to 15 cm of new snow. 10 to 25 km/h southwest alpine wind. Freezing level rising to 1500 m.

Saturday

A mix of sun and cloud with trace amounts of new snow. 10 to 30 km/h west alpine wind. Freezing level rising to 1600 m.

Sunday

Mostly sunny. 20 to 30 km/h north alpine wind. Freezing level rising to 2000 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid steep, rocky, and wind effected areas where triggering slabs is more likely.
  • When a thick, melt-freeze surface crust is present, avalanche activity is unlikely.
  • Conditions may have improved, but be mindful that deep instabilities are still present.
  • Be aware of the potential for loose avalanches in steep terrain where snow hasn't formed a slab.

Avalanche Problems

Persistent Slabs

A crust with weak facets above is down 40 to 110 cm. Steep or convex terrain features with a shallow or thin to thick snowpack at treeline and above are the most likely places to trigger this layer.

Aspects: North, North East, East, North West.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 2 - 3