Avalanche Forecast
Issued: Nov 24th, 2020 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs and Persistent Slabs.
Jasper Snow Safety,
Highway 93N will have spot closures from parkers summer trail to Saskatchewan glacier parking for avalanche control. Expect delays of 1.5hrs at a time.
Summary
Weather Forecast
Tuesday evening and Wednesday morning will bring up to 15cm snow accompanied by moderate to strong Sw winds.
Friday will be the start of another snow storm with snow amounts uncertain
Snowpack Summary
The snowpack is highly variable depending on location. Height of snow at Parkers is ~100cm at treeline. The Nov.4 crust up to 2600m, and is up to 70cm deep. Test results on this crust have shown a mix of mod sudden/resistent planar results. Continued wind slab develop on N and E aspects ridge top down into treeline. Basal layers continue to weaken
Avalanche Summary
No new observations noted or reported today
Confidence
Problems
Wind Slabs
New snow and strong winds will create freshly formed wind slabs in immediate lee's.
- Use caution in lee areas. Recent wind loading have created wind slabs.
- Be careful with wind loaded pockets while approaching and climbing ice routes.
Aspects: North, North East, East, South East, North West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Persistent Slabs
Pockets of previous wind deposited snow overlies the Nov 4 rain crust. Test results are mixed on this layer but appears to be becoming more reactive with increased loads and continued faceting
- Pockets of persistent slabs linger on alpine lee features.
Aspects: North, North East, East, South East, West, North West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Nov 25th, 2020 4:00PM
