Persistent Slabs
N
NE
E
SE
S
SW
W
NW
- Alpine
- Treeline
- Below treeline
- Likelihood
- Unlikely - Possible
- Size
- 1.5–2.5
In high alpine terrain where the surface crust may not exist or be unsupportive, persistent weak layers may remain human-triggerable.
Avalanche forecast
View on mapNorth Rockies
Feb 6 – 7, 2024Avalanche Canada
Archived · expired 3 years ago
Avalanche danger
Thu
Fri
Alpine
1 · Low
Treeline
1 · Low
Below
1 · Low
Highlights
A widespread surface crust is creating stable avalanche conditions, but is making travel challenging.
Avalanche problems
Terrain and Travel Advice
- When a thick, melt-freeze surface crust is present, avalanche activity is unlikely.
- Carefully evaluate big/extreme terrain features before committing to them, it's not full "go" time yet.
- Expect shallow snow cover that barely covers ground roughness.
Confidence
High
Avalanche Summary
No recent avalanche activity has been reported.
Snowpack Summary
Trace amounts of dry snow have begun to accumulate atop a widespread hard crust. In general, the crust is strong and supportive to travel on.
In the midpack, a weak facet layer persists, but has become unlikely to trigger with a supportive crust above.
Areas in the east of the region are largely characterized by a shallow and faceted snowpack.
Weather Summary
Monday Night
Mostly clear with no precipitation, southeast alpine winds 20 to 30 km/h, treeline temperature -8 °C.
Tuesday
Mix of sun and cloud with no precipitation, southwest alpine winds 20 to 30 km/h, treeline temperature -8 °C.
Wednesday
Mostly cloudy with no precipitation, southeast alpine winds 20 to 30 km/h, treeline temperature -8 °C.
Thursday
Mostly cloudy with no precipitation, southwest alpine winds 20 to 30 km/h, treeline temperature - 10 °C.
More details can be found in the Mountain Weather Forecast.