Wind Slabs
N
NE
E
SE
S
SW
W
NW
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible - Likely
- Size
- 1–2
New wind slabs are forming with the recent snow.
Avalanche forecast
View on mapJasper
Dec 10 – 11, 2022Avalanche Canada
Archived · expired 4 years ago
Avalanche danger
Mon
Tue
Alpine
2 · Moderate
Treeline
2 · Moderate
Below
2 · Moderate
Highlights
Be vigilant regarding the persistent weak layer down 30cm. If the upper snow pack starts to become more cohesive due to warmer temperatures or winds, it could wake up and start producing avalanches.
Avalanche problems
Persistent Slabs
NNEESESSWWNW- Alpine
- Treeline
- Below treeline
- Likelihood
- Unlikely - Possible
- Size
- 1–2.5
Marmot Basin Ski area reports surface hoar extending into some alpine features. Solar crust on south aspects is also of concern. Dig and assess this layer before committing to terrain. Lots of whumpfing and shooting cracks have been observed on this layer across Jasper but no avalanches have been observed yet.
Confidence
Moderate
Avalanche Summary
No new avalanches were observed.
Snowpack Summary
5-10cm of new snow across the region in the past two days. Moderate south west winds creating wind slabs in the alpine. Tree line and below there is a buried layer down 30-35cm that consists of surface hoar, facets, and sun crust depending on aspect and location. Snow depth ranges from 45-110cm.
Weather Summary
Saturday
Cloudy with sunny periods and isolated flurries.
Precipitation: Trace.
Alpine temperature: High -6 °C.
Ridge wind southwest: 10-25 km/h.
Freezing level at valley bottom.
Sunday
Cloudy with sunny periods and isolated flurries.
Precipitation: Trace.
Alpine temperature: Low -10 °C, High -7 °C.
Ridge wind light to 15 km/h.
Freezing level at valley bottom.
Monday
Cloudy with sunny periods.
Precipitation: Nil.
Alpine temperature: Low -12 °C, High -5 °C.
Light ridge wind.
Freezing level at valley bottom.
Terrain and Travel Advice
- Watch for signs of slab formation throughout the day.