Haines Pass

Storm slabs sitting on weak facets will be most likely to trigger in wind affected terrain.

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

Low

• We are uncertain due to a limited number of field observations.

On Friday, 30 to 40 cm of recent storm snow sitting on a crust/facet layer was reactive to skiers on small test slopes at treeline. See this MIN report for more details.

Observations in this region are extremely limited. If you head out into the backcountry, let us know what you're seeing by submitting a MIN report.

Cornices are large and looming. Avoid traveling underneath them.

40 to 60 cm of recent snow and strong winds have formed storm slabs over a weak layer of crust/facets that have recently been reactive to human triggers.

There are multiple persistent weak layers of facets or crust/facets combinations in the top 100 cm of the snowpack. These layers are most likely to trigger in wind affected areas with a shallow or thick to thin snowpack.

Sunday Night
Clear skies. 10 km/h northeast ridgetop wind. Treeline temperature -10 °C.

Monday
Mix of sun and clouds. 10 km/h southeast ridgetop wind. Treeline temperature -13 °C.

Tuesday
Mostly sunny. 20 km/h east ridgetop wind. Treeline temperature -13 °C.

Wednesday
Mix of sun and clouds. 30 km/h northeast ridgetop wind. Treeline temperature -13 °C.

More details can be found in the Mountain Weather Forecast.

• Use conservative route selection. Choose simple, low angle terrain with no overhead hazard.
• Be aware of the potential for large avalanches due to buried weak layers.
• Be especially cautious as you transition into wind-affected terrain.
• Avoid steep, rocky, and wind-affected areas where triggering slabs is more likely.
• Cornice failures could trigger large and destructive avalanches.