Wind Slabs
N
NE
E
SE
S
SW
W
NW
- Alpin
- Limite forestière
- Sous la limite forestière
- Probabilité
- Possible
- Taille
- 1–2
Isolated wind slabs in the lees of alpine ridge crests will still be susceptible to human triggering in the short term.
Bulletin d’avalanche
Voir sur la carteBanff Yoho Kootenay
Apr 5 – 6, 2014Parks Canada
Archivé · expiré 12 years ago
Danger d’avalanche
Mon
Tue
Alpin
3 · Marqué
Limite forestière
2 · Modéré
Sous la limite
1 · Faible
Points saillants
Steady winds have decreased the ski quality. Stick to mellow lines in thin snowpack areas to avoid triggering any basal weakness. If the sun pops out Sunday, watch for increasing hazard on solar aspects.SH
Problèmes avalancheux
Deep Persistent Slabs
NNEESESSWWNW- Alpin
- Limite forestière
- Sous la limite forestière
- Probabilité
- Unlikely - Possible
- Taille
- 2–3
Thin areas mainly E of the divide are still susceptible to triggering basal layers causing larger avalanches. Big triggers such as cornice failures could be enough load to trigger an avalanche on the ground level
Weather Forecast
Sunday expect a weak freeze and a mix of sun and cloud and minimal new snow. Winds will be Westerly and light gusting up to 75km/h in the alpine. A forecasted waming trend Monday, Tuesday with freezing levels up to 2600m. This will be accompanied by strong W winds,10-15 cm of snow in the Louise group, and maybe even some rain W of the divide.
Snowpack Summary
New wind slabs 15-25 cm thick in the immediate lees. Western areas such as Emerald and Field have a deep and stable snowpack. Contrast this with the Lake Louise, Hwy 93 N, & Sunshine areas, where there is a weaker snowpack with sudden collapse very easy compression results on the basal depth hoar. A crust exists on all but N aspects.
Avalanche Summary
A recent sz. 2 wind slab on a N aspect was observed in Yoho from the last 24 hours out of steeper terrain. No other avalanches were reported.
Confidence
Freezing levels are uncertain on Sunday