Wind Slabs
N
NE
E
SE
S
SW
W
NW
- Alpin
- Limite forestière
- Sous la limite forestière
- Probabilité
- Possible
- Taille
- 1–3
Incoming precipitation will rebuild the wind slab problem.
Bulletin d’avalanche
Voir sur la carteNorthwest Inland
Jan 13 – 14, 2015Avalanche Canada
Archivé · expiré 12 years ago
Danger d’avalanche
Thu
Fri
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
1 · Faible
Points saillants
Careful attention to terrain choices are the "words to live by" right now. Buried surface hoar and facets could be triggered with a small avalanche.
Problèmes avalancheux
Persistent Slabs
NNEESESSWWNW- Alpin
- Limite forestière
- Sous la limite forestière
- Probabilité
- Unlikely - Possible
- Taille
- 2–6
This mid layer crust facet combination will take a long time to go away. Rapid warming, rapid loading, or an avalanche event could bring this dragon back to life.
Confidence
Fair - Due to the number and quality of field observations
Weather Forecast
Pacific moisture moving through the area for the next few days should bring us 5 to 10 cm of new snow by the end of Tuesday, with a break on Wednesday, then another 5 to 10 cm on Thursday and Friday. Winds from the S-SW, moderate to strong at upper elevations throughout the forecast period. Freezing levels should remain around 500 m, but may spike to 1800m on Wednesday, then return to around 500 m on Friday.
Avalanche Summary
No reports of avalanche activity yesterday.
Snowpack Summary
SW winds are creating wind slabs on lee aspects in exposed terrain, generally depositing snow on N and NE aspects. Below the recent storm snow is a rain crust at lower elevations and a temperature crust that formed on the surface above treeline from the recent temperature inversion. In the mid-pack a surface hoar layer has been reported, although it appears to be spotty in distribution. Near the base of the snowpack is a November crust-facet combination that will hopefully soon no longer be a problem.