Sea To Sky

Danger will rise throughout the day as storm slabs become increasingly reactive to human triggers.

Use small low consequence slopes to test the bond of the new snow.

New snow and wind will form storm slabs that will become increasingly reactive to human triggers on Monday.

If you go into the backcountry, please consider submitting your observations to the Mountain Information Network.

15 to 25 cm forecast snow and wind will form storm slabs that will become increasingly reactive to human triggers on Monday. The new snow overlies a crust on all slopes except true north facing terrain at upper elevations where the previous snow remained dry.

The facet/crust layer that produced large avalanches during early March is down 150-250 cm. It is currently considered to be dormant in most locations.

Many areas below treeline are either snow free or have very thin snow coverage. Expect difficult travel at lower elevations.

Sunday Night

Cloudy with isolated flurries, 3 to 15 cm snow. 20 to 30 km/h southwest ridgetop wind. Treeline temperature -5° C. Freezing level 800 m.

Monday

Snow, 15 to 25 cm during the day, with another 20 to 30 cm overnight. 50 to 60 km/h southwest ridgetop wind. Treeline temperature -3 °C. Freezing level 1200 m.

Tuesday

Mix of sun and cloud. 10 to 20 km/h southwest ridgetop wind. Treeline temperature -3 °C. Freezing level 1300 m.

Wednesday

Mix of sun and cloud. 10 to 20 km/h southwest ridgetop wind. Treeline temperature -1 °C. Freezing level 1500 m.

Check out the Mountain Weather Forecast for additional weather information.

More details can be found in the Mountain Weather Forecast.

• Storm slab size and sensitivity to triggering will likely increase through the day.
• 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.
• As the storm slab problem gets trickier, the easy solution is to choose more conservative terrain.