Dashboard Regions Weather Stations Radar Alerts Glossary
Contact About
Log In

Register for an account and never miss a forecast again!

Register

Avalanche Forecast

Archived

Mar 1st, 2019–Mar 2nd, 2019

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

Regions

Sea To Sky.

Reactive wind slabs are the primary concern on all aspects at treeline and above. Smooth surface, shooting cracks and whumphing are signs of unstable snow.

Confidence

High - The weather pattern is stable

Weather Forecast

Heading into March it feels more like January. The strengthening ridge will bring us another fairly long stretch of cold, dry, windy and clear weather.SATURDAY/ SUNDAY/ MONDAY: A mix of sun and cloud with alpine temperatures near -13. Moderate ridgetop wind from the northeast through the forecast period.

Avalanche Summary

On Thursday, numerous loose dry avalanches up to size 1 were reported on all aspects at treeline and above. Two skier triggered slabs were also reported on a steep southwest aspect at 1800 m. These failed at a crust interface 20-25 cm down producing size 1 alb avalanches. Check out this recent MIN report from GIN Peak. Even small terrain features at treeline have wind slab problems. This one is from the W/B Backcountry

Snowpack Summary

Up to 10 cm of new snow sits above a plethora of old snow surfaces including firm wind slabs, sun crust on steep solar aspects, surface hoar and faceted crystal in sheltered areas. The recent low-density snow will likely have a poor bond to the previous snow surfaces and sluff easily from steeper terrain features. Switching winds have formed wind slabs on all aspects. However, the south-southwesterly aspects have been most reactive to human triggers. The lower snowpack is strong and settled.

Problems

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind 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.