Avalanche Forecast
Issued: Mar 19th, 2020 8:00AM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Loose Dry and Persistent Slabs.
catherine brown,
Parks Canada
The Winter Permit System is still in effect.
Rogers Pass Discovery Centre is closed.
Daily Winter Permits are not being issued.
Annual Winter Permits are still valid.
Summary
Weather Forecast
Another warm, sunny day is forecast for today. Expect alpine temperatures to reach -6. Freezing level will rise to around 1500 m. Winds will be light from the east. Forecast scattered clouds might reduce solar warming today.
Snowpack Summary
Sun crusts have formed on slopes facing the sun. These crusts will break down with daytime warming. Open terrain treeline and above has widespread wind effect from strong weekend winds. Cool overnight temperatures are starting to facet upper snowpack. The dormant Feb 22 surface hoar and crust combo is down 90-130cm.
Avalanche Summary
No new natural avalanche activity was observed along the highway corridor yesterday.
Several small-large (up to size 2.5) loose snow avalanches occurred on solar aspects on Monday.
If you have observations of backcountry avalanches, please report them via the Avalanche Canada Mountain Information Network.
Confidence
Problems
Loose Dry
The snow on slopes facing the sun will become moist this afternoon. Use caution on steep terrain and around terrain traps.
- Minimize exposure to steep, sun exposed slopes when the solar radiation is strong.
- Use extra caution on slopes if the surface snow is moist.
Aspects: South, South West, West.
Elevations: All elevations.
Likelihood
Expected Size
Persistent Slabs
This layer has become mostly dormant, but skier triggering may still be possible in shallower snowpack areas.
- Avoid steep convexities or areas with a thin or variable snowpack
- Dig down to find and test weak layers before committing to a line.
Aspects: North, North East, East, South East, North West.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Mar 20th, 2020 8:00AM
