Avalanche Forecast
Issued: Mar 13th, 2021 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs, Loose Wet and Deep Persistent Slabs.
Tereza Turecka,
Warm temperatures and high solar input are expected to taper off with incoming cloudy weather. Watch closely for any temperature spikes during the day as freezing levels are uncertain.
Summary
Weather Forecast
Sunday: Mainly cloudy. Precipitation: Nil. Alpine temperature: High -3 °C. Ridge wind southwest: 15-35 km/h. Freezing level: 1900 metres.Monday: Cloudy with sunny periods. Precipitation: Nil. Alpine temperature: Low -7 °C, High -2 °C. Ridge wind west: 10-25 km/h. Freezing level: 1900 metres.
Snowpack Summary
High solar input in the last few days created crusts and moist snow on solar aspects at TL and below. Wind scoured ALP features lost most of its snow to the lees of the mountains. The mid pack is supportive in deep areas but weak in shallow spots where it fails on buried facet layers in test results.
Avalanche Summary
No patrol on Saturday.
Confidence
The weather pattern is stable
Problems
Wind Slabs
Originally formed on weak Feb 20th facets. It is prudent to keep this on your radar with warmer temperatures as reactivity may increase. Cornices will have the potential to fail and trigger slabs below.
- Pay attention to overhead hazards like cornices which could trigger slabs.
- If triggered the wind slabs may step down to deeper layers resulting in large avalanches.
Aspects: North, North East, East, South East, North West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Loose Wet
Even with clouds in the forecast, green house effect and higher freezing levels have the potential to warm up the snowpack enough for the wet loose to be an issue. Best time to travel is early while its frozen solid.
- Minimize exposure to steep, sun exposed slopes when the solar radiation is strong.
Aspects: South, South West, West.
Elevations: Treeline, Below Treeline.
Likelihood
Expected Size
Deep Persistent Slabs
Caution in thin facetted snowpack areas where triggering is more likely. This is a low probability but high consequence problem.
- Avoid shallow snowpack areas where triggering is more likely.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Mar 14th, 2021 5:00PM
