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Avalanche Forecast

Archived

Apr 12th, 2025–Apr 13th, 2025

Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.

Regions

Pine Pass.

Storm slabs are expected to remain reactive to human triggers, especially in wind loaded features

Choose conservative slopes, free from overhead hazard.

Confidence

Moderate

Avalanche Summary

Reports in this area are limited but we expect natural and human triggered avalanches within the recent storm snow.

Snowpack Summary

30 cm of recent snow has been redistributed by strong westerly winds. This sits over dry snow on high north-facing slopes and over a crust elsewhere. The upper snowpack is generally moist, with a crust from last week's rain event.

Below treeline elevations hold moist, isothermal snow.

A surface hoar layer is buried 70-120 cm deep on sheltered north and east alpine slopes. No recent avalanches have been reported, it remains a possibility for triggering with heavy loads like cornice falls.

Weather Summary

Saturday Night

Partly cloudy. 30 km/h west ridgetop wind. Freezing level drops to 500 m.

Sunday

A mix of sun and cloud with 30 to 40 km/h west ridgetop winds. Treeline temperature -3 °C. Freezing level 1500 m.

Monday

Mostly cloudy. 30 to 50 km/h southwest ridgetop winds. Treeline temperature -3 °C. Freezing level 1500 m.

Tuesday

Mostly cloudy. 30 to 50 km/h west ridgetop winds. Treeline temperature -3 °C. Freezing level 1500 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Continue to make conservative terrain choices while the storm snow settles and stabilizes.
  • Be careful with wind-loaded pockets, especially near ridge crests and rollovers.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.

Problems

Storm Slabs

Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-slabs that form over a persistent weak layer (surface hoar, depth hoar, or near-surface facets) may be termed Persistent Slabs or may develop into Persistent Slabs.