Avalanche Forecast
Issued: Nov 23rd, 2019 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs and Loose Dry.
Jasper Snow Safety,
Parks Canada
Forecast snow amounts are uncertain Saturday night into Sunday. If it exceeds expectations, expect the hazard to increase with the incoming wind and snow.
Summary
Weather Forecast
Saturday night will bring -6 °C., 12cm of snow, West winds 25 km/h gusting to 70 km/h. Sunday will be cloudy with sunny periods and isolated flurries, -7 °C., and West winds 20 km/h gusting to 70 km/h. Monday - Tuesday will be clear skies and cold.
For more details: Avalanche Canada's, Mountain Weather Forecast.
Snowpack Summary
Variable surfaces including crusts, hard wind press and loose snow sit above the Nov. rain crust which goes as high as 2200m. Total snow pack height in alpine is around 45-85 cm. A variety of surfaces in the alpine from wind pressed/scoured features to wind slabs in lee features in the alpine. Sheltered locations have formed Surface hoar.
Avalanche Summary
Hazard can be expected to increase in isolated areas where wind effect and loading is visible. No natural activity observed or reported in the forecast region. A system pushing in will likely elevate the avalanche activity and hazard.
Confidence
Forecast snowfall amounts are uncertain on Sunday
Problems
Wind Slabs
Ongoing strong SW winds will redistributed any new snow into windslabs in the high alpine lee features. Monitor how Saturday nights snow input develops this condition.
- Be cautious as you transition into wind affected terrain.
- Minimize overhead exposure during periods of heavy loading from new snow, wind.
Aspects: North, North East, East, West, North West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Loose Dry
Saturday nights snow amounts are uncertain yet if it exceeds expectations, a dry loose condition could occur. Particularly in steep terrain.
- 874
- Choose ice climbs that are not exposed to avalanches from above.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Nov 24th, 2019 4:00PM
