Avalanche Forecast
Issued: Mar 22nd, 2022 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs, Cornices and Loose Wet.
Timothy Johnson,
Watch out for the poor overnight freeze Tuesday evening. Snow and strong winds are expected for Wednesday evening. If the storm comes in early or you are out late the hazard could be greater than what is reflected in the bulletin.
Summary
Weather Forecast
Wednesday
Flurries.
Accumulation: 6 cm.
Alpine temperature: High -1 C.
Ridge wind southwest: 20 km/h gusting to 60 km/h.
Freezing level: 2000 metres.
Thursday
A mix of sun and cloud.
Precipitation: Nil.
Alpine temperature: Low -11 C, High -7 C.
Ridge wind west: 10-30 km/h.
Freezing level at valley bottom.
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
Timing of incoming weather systems is uncertain on Wednesday
Problems
Wind Slabs
Increasing winds and snow will build new wind slabs in the alpine and possibly down into exposed tree line.
- 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
Cornices
Be mindful of what is above you during periods of warm temperatures and poor overnight freezes.
- Cornices become weak with daytime heating.
- Avoid slopes when the solar radiation is strong, especially if they have large cornices overhead.
Aspects: North, North East, East, South East, North West.
Elevations: Alpine.
Likelihood
Expected Size
Loose Wet
Expect small wet loose avalanches in steep terrain with increasing temperatures.
- Use caution above cliffs and terrain traps where small slab avalanches may have severe consequences.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Mar 23rd, 2022 4:00PM
