Loose Wet
N
NE
E
SE
S
SW
W
NW
- Alpin
- Limite forestière
- Sous la limite forestière
- Probabilité
- Likely - Very Likely
- Taille
- 2–3
This will be most prominent at treeline and below where we expect rain to start Thursday night into Friday below 2400m.
Bulletin d’avalanche
Voir sur la carteBanff Yoho Kootenay
May 1 – 2, 2014Parks Canada
Archivé · expiré 12 years ago
Danger d’avalanche
Sat
Sun
Alpin
3 · Marqué
Limite forestière
4 · Fort
Sous la limite
4 · Fort
Points saillants
No expected freeze overnight and rain below 2400m on Friday will keep the hazard elevated until freezing levels drop. SH
Problèmes avalancheux
Deep Persistent Slabs
NNEESESSWWNW- Alpin
- Limite forestière
- Sous la limite forestière
- Probabilité
- Possible - Likely
- Taille
- 3–4
With little overnight freeze, the weak basal layer will be susceptible to human triggering in thin areas. Natural activity should slow down over the next 24 hours as the freezing levels slowly go down.
Weather Forecast
Rain starting tonight and freezing levels to 2400m overnight. Alpine temperatures will stay around zero overnight.Expect a mix of rain and snow Friday up to treeline with snow at upper elevations(up to 20cm). No freeze is expected overnight. Models are calling for 30-40cm at upper elevations with freezing levels lowering by the end of the weekend.
Snowpack Summary
A weak freeze broke down quickly this morning as temperatures rose into the double digits in the alpine early in the day. Thin snowpack areas are isothermal at all elevations and aspects. Basal facets and depth hoar are waking up as the heat penetrated the snowpack.
Avalanche Summary
A widespread natural cycle to size 3.5 has been occurring over the last 24 hours. Lots of loose wet avalanches, and many slides initiating in thin areas and running to ground. One very large avalanche in the Bryant Creek area crossed 3 alpine bowls showing that the weak basal layer is very reactive during these warm conditions.
Confidence
Freezing levels are uncertain