Loose Dry
N
NE
E
SE
S
SW
W
NW
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 1–1.5
Expect sluffing out of steep rocky terrain
Avalanche forecast
View on mapJasper
Feb 9 – 10, 2019Parks Canada
Archived · expired 8 years ago
Avalanche danger
Sun
Mon
Alpine
2 · Moderate
Treeline
2 · Moderate
Below
2 · Moderate
Highlights
Human triggering remains a possibility. A strong, thick supportive mid-pack over the basal weakness is critical to safe travel, especially in shallow snowpack regions. Ice climbers should be wary of loose dry avalanches in gulleys.
Avalanche problems
Deep Persistent Slabs
NNEESESSWWNW- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 1.5–3.5
Just a reminder, this is still there and can still be triggered from shallow snowpack areas. See avalanche activity summary.
Weather Forecast
Saturday will be cloudy, no precipitation, alpine temperatures high -20 C, and light East Ridge winds. Sunday will be sunny with cloudy periods, no precipitation, alpine temperature low -23 C and high -14 C with light ridge winds.A detailed mountain weather forecast is available from Avalanche Canada.
Snowpack Summary
50cm from Feb 2nd was followed by strong Northerly winds and cold temperatures. This snow overlies a dormant but persistent weaknesses of surface hoar, crusts, and/or facets. Cold temps have weakened the structure of the slab over this layer and it lays dormant, for now. A deep persistent basal facet/depth hoar weakness exists in shallow areas.
Avalanche Summary
On Feb 7th, 3 people were involved in a sz 2 in the Surprise Valley area of Maligne. This area is typically shallow and facetted with a weaker mid-pack. Slide was triggered in the basal weakness while traveling through the trees on a W aspect, 1950m, on a 30° slope. One member was fully buried and located and recovered by their partners.