Avalanche Forecast

No new avalanches have been reported.

During the storm on Monday and Tuesday, storm slabs up to size 2.5 occurred. On Tuesday near Mount Washington, several skier-triggered storm slabs up to size 1.5 were reported from steep or wind-loaded terrain at treeline.

Reactivity in wind loaded features is expected to continue.

Up to 90 cm of recent snow has been transported into wind slabs on south and east facing slopes by strong northwest winds. Expect to find pockets of dense and deep wind slab in wind loaded terrain and crusts or bare ground in high elevation exposed terrain.

The remainder of the snowpack is strong, with numerous hard melt-freeze crusts.

Treeline snow depths generally range from 50 to 150 cm. Snow depth diminishes rapidly below 500 m where there has been more rainfall.

Friday Night

Mostly clear skies. Northwest winds ease to 10-30 km/h. Treeline temperatures remain steady around -17 °C.

Saturday

Sunny with afternoon cloud possible. Northwest winds 10-20 km/h. Treeline temperatures may reach -9 °C.

Sunday

Sunny skies with northerly winds 20-40 km/h. Treeline temperatures finally climb out of the deep freeze, reaching -4 °C.

Monday

Sunny skies with northerly winds 10-20 km/h. Treeline temperatures around-3 °C.

With unusually cold temperatures forecast for this weekend, check out the most recent Forecaster Blog for tips on backcountry preparedness.

More details can be found in the Mountain Weather Forecast.

• Expect slab conditions to change drastically as you move into wind exposed terrain.
• Wind slabs are most reactive during their formation.
• Recent wind has varied in direction so watch for wind slabs on all aspects.