Loose Dry
N
NE
E
SE
S
SW
W
NW
- Alpin
- Limite forestière
- Sous la limite forestière
- Probabilité
- Possible - Likely
- Taille
- 1–2
Use caution in steep, sheltered terrain.
Bulletin d’avalanche
Voir sur la carteWaterton Lakes
Feb 15 – 18, 2019Parks Canada
Archivé · expiré 8 years ago
Danger d’avalanche
Sat
Sun
Alpin
4 · Fort
Limite forestière
3 · Marqué
Sous la limite
3 · Marqué
Points saillants
Our Storm Slab problem will continue to build into the weekend. Pay attention to snowfall amounts with potential upslope influence in our area.
Problèmes avalancheux
Storm Slabs
NNEESESSWWNW- Alpin
- Limite forestière
- Sous la limite forestière
- Probabilité
- Likely - Very Likely
- Taille
- 1–2
Moderate Compression Test Results today on Forum Ridge at the Storm snow interface. 15-30cm of snow over the weekend will continue to build storm slabs.
Deep Persistent Slabs
NNEESESSWWNW- Alpin
- Limite forestière
- Sous la limite forestière
- Probabilité
- Possible
- Taille
- 2–3
A layer of weak facets is lurking at the bottom of the snowpack. This new snow may be enough to affect this basal weakness in shallow snowpack areas.
Weather Forecast
Tonight: 4-8cm. Light SW Wind. Alpine low -12Friday: Flurries. 5-10cm with moderate SW winds. Alpine high - 8Saturday: Cloudy with Scattered Flurries. 5-10cm. Moderate SW wind. Alpine high -9Sunday: Cloudy with Sunny Periods. Trace precipitation. Alpine high -18
Snowpack Summary
30-45cm of snow in the past 48h with moderate SW winds have created reactive soft slabs. These new storm slabs sit over a variety of wind affected surfaces including pockets of Windslab near ridgetop. The Midpack is strong in deep snowpack areas but this increase in loading will stress the weak, facetted basal snowpack.
Avalanche Summary
Size 2 Natural on Mt.Rowe Wed Feb. 13th.Size 1.5 Natural South end of Forum Ridge Wed Feb 13th.Multiple Loose Dry Avalanches observed in steep terrain
Confidence
Intensity of incoming weather systems is uncertain on Saturday