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Archived

Avalanche Forecast

Mar 24th, 2025–Mar 25th, 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
3: Considerable
The avalanche danger rating below treeline will be considerable
Alpine
4: High
The avalanche danger rating in the alpine will be high
Treeline
4: High
The avalanche danger rating at treeline will be high
Below Treeline
4: High
The avalanche danger rating below treeline will be high
Alpine
4: High
The avalanche danger rating in the alpine will be high
Treeline
4: High
The avalanche danger rating at treeline will be high
Below Treeline
4: High
The avalanche danger rating below treeline will be high

Regions: Glacier.

Storm snow has settled more than expected but human triggering remains likely.

Avoid consequential terrain and be mindful of your overhead hazard at all elations.

Expect the hazard to rise near the end of the day during peak warming.

Confidence

Moderate

Avalanche Summary

Avalanche control using artillery at Rogers pass on Sunday night produced avalanches up to size 3.5.

Natural avalanche activity tapered off as storm intensity eased with no new natural avalanches observed on Monday.

Weather Summary

Additional moisture & elevated freezing levels continue until Friday.

Tonight Mainly cloudy. No precipitation. Wind SW 15-30 km/h. Freezing level (FZL)1500m

Tuesday Flurries/ Rain, 4 cm. Alpine high 2 °C. Ridge wind SW 25-45. FZL 2400m

Wednesday Cloudy, isolated showers. Trace precipitation. Alpine low 0 °C. Wind SW 15-25. FZL 3000m

Thursday Wet snow mixed with rain, 17 cm. Light wind gusting to 35. FZL 2700m

Terrain and Travel Advice

  • Keep your guard up as storm slabs may remain sensitive to human triggering.
  • Storm slabs in motion may step down to deeper layers resulting in large avalanches.
  • A moist or wet snow surface, pinwheeling, and natural avalanches are all indicators of a weakening snowpack.

Avalanche Problems

Storm Slabs

Aprrox. 25cm of snow arrived on Sunday with warm temperatures creating a widespread storm slab which will be reactive to human triggers. Storm slabs will be most reactive in terrain exposed to the SW winds or at lower elevations where rain or warm temperatures have created a more cohesive slab.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Likely

Expected Size: 1 - 2.5

Loose Wet

Wet loose avalanches will be likely at lower elevations during periods of rain or late in the day during peak warming.

Aspects: All aspects.

Elevations: Treeline, Below Treeline.

Likelihood: Possible - Likely

Expected Size: 1.5 - 2.5

Persistent Slabs

A persistent weak layer (PWL), buried March 5th, is now down 60-120cm in the snowpack. Depending on aspect and elevation, this layer may be suncrust, facets and/or surface hoar.

Wet loose or storm slab avalanches may step down to this layer resulting in large avalanches.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely

Expected Size: 2.5 - 4