Sea To Sky

Travel in alpine terrain is not recommended.

Use conservative route selection. Choose simple, low angle terrain with no overhead hazard.

Moderate

• We are uncertain about forecast snowfall amounts.

On Wednesday, explosive triggered storm slabs up to size 1.5 were reported on northerly aspects in the alpine.

Human triggered avalanches will become increasingly likely throughout the day on Friday.

Forecast snow and wind are expected to form reactive storm slabs overlying persistent weak layers.

At treeline and above, this layer is primarily a hard crust with weak facets above and/or below.

In sheltered treeline locations and below, this layer may be a combination of hard crust and/or surface hoar.

Cornices are reported to be large and looming. Be mindful of them overhead or when travelling on ridge tops.

The mid/lower snowpack is generally well settled and strong.

Thursday Night
Cloudy. 20 to 30 cm of snow above 1400 m (rain below). 50 km/h south ridgetop wind. Treeline temperature 1 °C. Freezing level 1700 m.

Friday
Cloudy. 20 to 40 cm of snow above 1200 m (rain below). 60 km/h southwest ridgetop wind. Treeline temperature 0 °C. Freezing level 1500 m.

Saturday
Mostly cloudy. 40 km/h southwest ridgetop wind. Treeline temperature 3 °C. Freezing level 2300 m.

Sunday
Mostly cloudy. 15 to 20 cm of snow above 1300 m (rain below). 50 km/h south ridgetop wind. Treeline temperature 0 °C. Freezing level 1600 m.

More details can be found in the Mountain Weather Forecast.

• Travel in alpine terrain is not recommended.
• Use conservative route selection. Choose simple, low angle terrain with no overhead hazard.
• Be aware of the potential for larger than expected storm slabs due to buried surface hoar.
• Watch for signs of instability like whumpfing, hollow sounds, shooting cracks, or recent avalanches.
• Use small, low consequence slopes to test the bond of the new snow.