Avalanche Forecast Sea to Sky

Date Issued: Valid Until:

Avalanche Canada mconlan, Avalanche Canada

Avalanche Forecast

Fri Apr. 19th ยท 4:01PM

Alpine

Danger Ratings Moderate

Treeline

Danger Ratings Moderate

Below Treeline

Danger Ratings Low
Wind Slabs Wind Slabs
Loose Wet Loose Wet

Alpine

Danger Ratings Moderate

Treeline

Danger Ratings Low

Below Treeline

Danger Ratings Low

Alpine

Danger Ratings Moderate

Treeline

Danger Ratings Low

Below Treeline

Danger Ratings Low

Plan your travels to avoid steep leeward slopes where wind slabs may remain as well as steep southerly slopes during daytime warming.

Confidence

High -

Weather Forecast

FRIDAY NIGHT: Clear skies, light northeast wind, alpine temperature -4 C, freezing level 1600 m.

SATURDAY: Clear skies, light north wind, alpine temperature -3 C, freezing level 1800 m.

SUNDAY: Mix of sun and clouds, light southwest wind, alpine temperature -2 C, freezing level 2000 m.

MONDAY: Cloudy with alpine flurries, accumulation 5 cm, moderate southwest wind, alpine temperature -2 C, freezing level 2000 m.

Avalanche Summary

A loose wet avalanche and cornice cycle occurred in the region during the storm on Thursday night and Friday, producing small to large avalanches (size 1 and 2). Most of the avalanches occurred in the alpine as well as treeline.

Snowpack Summary

Around 20 to 30 cm of recent snow has accumulated above around 2000 m. The snow fell with strong south wind, likely forming new wind slabs and cornices in the alpine. The snowpack below treeline is saturated and rapidly melting.

Problems

Wind Slabs

Wind Slabs

Wind slabs formed from recent snow and strong southerly wind may remain touchy this weekend. Be wary of the potential for these slabs when entering lee terrain features near ridges above 2000 m.

  • Use small slopes without consequence to test the bond of the new snow.
  • New cornices will be weak and could trigger wind slabs on slopes below.
  • Be careful with wind-loaded pockets, especially near ridge crests.

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

Elevations: Alpine.

Likelihood

Possible

Expected Size

1 - 2
Loose Wet

Loose Wet

Sunny skies on Saturday will likely cause the new snow above 2000 m to moisten and become touchy on sun-exposed slopes, increasing the potential for loose wet avalanches.

  • Minimize overhead exposure and avoid steep slopes during periods of strong sun.
  • Avoid terrain traps such as cliffs and gullies that increase the consequence of small avalanches.

Aspects: East, South East, South, South West, West.

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 2