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Archived

Avalanche Forecast

Apr 23rd, 2024–Apr 24th, 2024
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
1: Low
The avalanche danger rating in the alpine will be low
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
1: Low
The avalanche danger rating in the alpine will be low
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

In localized areas that receive more than 15 cm of new snow, fresh wind slabs may form on lee features in the alpine.

Be alert to conditions that change with aspect and elevation.

Confidence

Moderate

Avalanche Summary

Numerous naturally triggered wet loose avalanches up to size 1.5 were reported on sunny aspects on Monday.

Field observations are currently very limited in this region. Please consider sharing your observations to the Mountain Information Network.

Snowpack Summary

New snow and wind may form fresh wind slabs on lee features in the alpine.

A hard melt-freeze crust exists on the snow surface on sun-exposed slopes to the mountain tops. The crust will transition to wet snow with daytime warming and generally re-freeze at night.

Cornices are large and may become weak with daytime warming.

Weather Summary

Tuesday night

Cloudy with flurries, 3 to 15 cm snow. 30 to 40 km/h southwest ridgetop wind. Treeline temperature -4 °C. Freezing level 900 m.

Wednesday

Mostly cloudy with isolated flurries, 0 to 10 cm snow. 20 to 30 km/h southwest ridgetop wind. Treeline temperature -1 °C. Freezing level 1300 m.

Thursday

Mix of sun and cloud. 10 to 20 km/h north ridgetop wind. Treeline temperature +2 °C. Freezing level 1600 m.

Friday

Sunny. 10 to 20 km/h southeast ridgetop wind. Treeline temperature +6 °C. Freezing level 2000 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for wind-loaded pockets especially around ridgecrest and in extreme terrain.
  • Be alert to conditions that change with aspect and elevation.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.
  • When a thick, melt-freeze surface crust is present, avalanche activity is unlikely.

Avalanche Problems

Wind Slabs

In localized areas that receive more than 15 cm of new snow, fresh wind slabs may form on lee features in the alpine.

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

Elevations: Alpine.

Likelihood: Possible

Expected Size: 1 - 1.5