Wind Slabs
- Alpin
- Limite forestière
- Sous la limite forestière
- Probabilité
- Possible
- Taille
- 1–2
Wind slab can be found in specific alpine and tree line terrain features. Watch out for hollow sounding snow where a hard wind slab sits over weak facets.
Soft turns possible in sheltered locations; Alpine is wind hammered and variable.
Wind slab can be found in specific alpine and tree line terrain features. Watch out for hollow sounding snow where a hard wind slab sits over weak facets.
The slab problem overlies different layers depending on elevation and aspect. Lower elevations has a rain crust 40-60cm down with weak facets on top reacting to tests. Above 1950m, a buried facet layer down 40-50cm is the primary concern.
Friday
Variable cloud.
Precipitation: Nil.
Alpine temperature: High -8 C.
Ridge wind west 15 km/hr.
Freezing level valley bottom.
Saturday
Mostly cloudy.
Precipitation: Nil.
Alpine temperature: Low -11 C, High -8 C.
Ridge wind southwest 15-30 km/hr
Freezing level valley bottom.
Sunday
Flurries.
Precipitation: 8cm.
Alpine temperature: Low -12 C, High -6 C
Widespread wind effect and stripping in alpine from previous strong to extreme SW winds. Wind slab in specific areas tree line and above. Thin sun crust on steep solar aspects up to ~2300m. The midpack is mostly supportive. Weak facet layer down ~20-30cm and a crust down 40-60cm below 1950m, faceting but still reactive in snowpit tests.
Patrol and tour south end of Churchill range noted no new avalanche activity Wednesday. No patrol on Thursday.