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Archived

Avalanche Forecast

Mar 21st, 2022–Mar 22nd, 2022
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: Jasper.

There is some uncertainty regarding how high the freezing levels will climb over the next few days. Be aware that hazard will increase or decrease depending on how warm it gets and how much sun is out.

Weather Forecast

Tuesday

Mainly cloudy with isolated flurries.

Precipitation: Trace.

Alpine temperature: High -3 C.

Ridge wind southwest: 15 km/h.

Freezing level: 2000 metres.

Wednesday

Mainly cloudy with isolated flurries.

Precipitation: Trace.

Alpine temperature: Low -8 C, High -2 C.

Ridge wind southwest: 20 km/h gusting to 60 km/h.

Freezing level: 1900 metres.

Snowpack Summary

There is a 1-5cm breakable temperature crust on all aspects below 1700m. Also a sun crust on solar aspects to at least 2100m. The midpack is mostly solid but there could be a Feb 13 interface down 20-50cm as a suncrust on solar aspects and a facet layer on polar aspects.

Avalanche Summary

No new recent avalanches have been observed around Jasper

Confidence

Intensity of incoming weather systems is uncertain on Wednesday

Avalanche Problems

Wind Slabs

Watch out for lingering wind slabs down into exposed tree line features.

  • 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: Possible

Expected Size: 1 - 2

Cornices

Be mindful of what is above you when the sun comes out and the temperatures start to rise.

  • Avoid slopes when the solar radiation is strong, especially if they have large cornices overhead.
  • Cornices become weak with daytime heating.

Aspects: North, North East, East, South East, North West.

Elevations: Alpine.

Likelihood: Unlikely - Possible

Expected Size: 1 - 3

Loose Wet

Expect small wet loose avalanches off steep rock features with increasing temperatures and solar input.

  • Use caution above cliffs and terrain traps where small slab avalanches may have severe consequences.

Aspects: East, South East, South, South West, West.

Elevations: All elevations.

Likelihood: Possible

Expected Size: 1 - 1