Persistent Slabs
N
NE
E
SE
S
SW
W
NW
- Alpine
- Treeline
- Below treeline
- Likelihood
- Unlikely
- Size
- 1–2.5
Isolated to very specific sheltered locations at treeline.
Avalanche forecast
View on mapJasper
Dec 15 – 16, 2019Parks Canada
Archived · expired 7 years ago
Avalanche danger
Mon
Tue
Alpine
2 · Moderate
Treeline
2 · Moderate
Below
1 · Low
Highlights
Continued mild temps for the next couple days, Tuesday looks promising for a much needed refresh.
Avalanche problems
Loose Dry
NNEESESSWWNW- Alpine
- Treeline
- Below treeline
- Likelihood
- Unlikely
- Size
- 1–2
Specific to steep terrain. Ice climbers should pay particular attention to this as entrenched loose snow may have the volume to knock climbers off their stance. Solar input has the potential to trigger this problem.
Deep Persistent Slabs
NNEESESSWWNW- Alpine
- Treeline
- Below treeline
- Likelihood
- Unlikely - Possible
- Size
- 1.5–3
Previous wind slabs may be sitting over a basal weakness
Avalanche Summary
A road trip to Saskatchewan crossing today found no new avalanches. Friday's field trip to Pyramid mountain area noted nothing new and no signs of instability and a consolidated snowpack. Thursday's field trip to Churchill slide path noted no new naturals.
Confidence
Track of incoming weather systems is uncertain on Tuesday
Weather Forecast
Sunday- Will be a mix of sun and cloud, Low -18 High -15 Light westerly winds No new snow
Monday- Mix sun and cloud Low -18 high -13 Trace amounts of precip
Tuesday- Flurries High -9 Low -13 with 7cm accumulation accompanied by Light south westerly winds
For more details: Mountain Weather Forecast
Snowpack Summary
The top 30cm remains unconsolidated except where exposed to wind where soft slabs have been formed. The snow depth is variable at all elevations. There is a crust/facet layer distributed through the region in the mid-pack with mixed reactivity and a weak basal facet/depth hoar layer at the base of the pack.