Avalanche Forecast

Natural and rider triggered wind slabs were reported in alpine and treeline features primarily near ridges (see photos below), and wet avalanches were observed on sun affected slopes and low elevations.

We expect activity to increase on these specific features, as higher temperatures and strong sun weaken the snowpack. Natural avalanches are possible and human triggered are likely. Check out the full definitions of moderate and considerable danger here.

Around 30 cm of dry snow can likely still be found on high north facing slopes with deeper deposits near ridgelines. All other aspects and elevations have likely become moist or wet with warm temperatures and sunshine. Below the recent snow, a widespread crust exists in all terrain below 2000 m.

The facet/crust layer that produced large avalanches during early March is buried 150-250 cm deep, and is now considered unreactive.

Sunday night

Partly cloudy. 40 to 60 km/h northwest ridgetop wind. Treeline temperatures to +3 °C. Freezing level 3000 m.

Monday

A mix of sun and cloud. 30 to 40 km/h northwest ridgetop wind. Treeline temperatures around +6 °C. Freezing level 2500 m.

Tuesday

Mostly cloudy with snowfall starting in afternoon, 10 to 20 cm. 50 to 70 km/h southwest ridgetop wind. Treeline temperatures around +4 °C. Freezing level 2000 m.

Wednesday

10 to 20 cm of new snow overnight, then flurries bringing another 5 cm through the day. 30 to 40 km/h southwest ridgetop wind. Treeline temperatures around -5 °C. Freezing level 1200 m.

More details can be found in the Mountain Weather Forecast.

• Avoid sun exposed slopes, especially if snow surface is moist or wet.
• A moist or wet snow surface, pinwheeling and natural avalanches are all indicators of a weakening snowpack.
• Be careful with wind slabs, especially in steep, unsupported and/or convex terrain features.
• Wind slabs may be poorly bonded to the underlying crust.
• Pay attention to cornices and give them a wide berth when traveling on or below ridges.