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Archived

Avalanche Forecast

Jan 29th, 2024–Jan 30th, 2024
Alpine
4: High
The avalanche danger rating in the alpine will be high
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
2: Moderate
The avalanche danger rating at treeline will be moderate
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
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

The upper snowpack has been saturated and weakened by rain. Avoid high-consequence avalanche terrain while above-freezing temperatures continue.

Confidence

Moderate

Avalanche Summary

Numerous wet slab, wet loose, and storm slab avalanches were naturally or explosive-triggered on Sunday, anywhere from size 1 to 3.

Snowpack Summary

Rainfall and warm temperatures have saturated and weakened the upper snowpack. At treeline and below the snowpack is largely isothermal.

The mid and lower snowpack consists of various old crusts and is generally well-settled and well-bonded.

Weather Summary

Monday Night

Cloudy with 30 to 40 mm of rain or wet snow, south alpine winds 50 to 80 km/h, freezing levels around 2100 m.

Tuesday

Cloudy with trace amounts of rain or wet snow, south alpine winds 20 to 40 km/h, freezing levels around 2100 m.

Wednesday

Cloudy with 5 to 15 mm of rain or wet snow, southeast alpine winds 30 to 60 km/h, freezing levels around 2100 m.

Thursday

Cloudy with 0 to 5 mm of rain or snow, southeast alpine winds 20 to 40 km/h, freezing levels around 1600 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Back off slopes as the surface becomes moist or wet with rising temperatures.
  • The more the snow feels like a slurpy, the more likely loose wet avalanches will become.
  • Conservative terrain selection is critical, choose only well supported, low consequence lines.

Avalanche Problems

Loose Wet

Recent rainfall has weakened the upper snowpack. Expect loose wet avalanches in steep terrain.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Likely

Expected Size: 1 - 2

Wet Slabs

Rainfall has added a significant load to the upper snowpack. This is a particular concern where heavy, wet slabs sit atop a crust.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Likely

Expected Size: 1.5 - 3