Avalanche Forecast
Issued: Jan 30th, 2020 8:36AM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Storm Slabs.
ross campbell,
Parks Canada
Investigate how the new snow is bonding to the old surface, noting slab formation or stiffer feeling snow. Be cautious on Southerly aspects if the sun stays out today, and on cross-loaded terrain features at higher elevations.
Summary
Weather Forecast
Cloudy with sunny periods today, no precipitation expected, light to mod winds from the South, and FL rising to 1200m. On Friday, an atmospheric river will begin to set up over Rogers Pass. Copious amounts of precipitation are expected and freezing levels will rise further to 2000m by Friday night.
Snowpack Summary
20cm of new snow overnight, coupled with moderate to strong winds likely formed storm slabs in cross loaded terrain and immediate lees. The mid and lower snowpack is well settled, all of our persistent weak layers are currently dormant; however, they will be tested on Friday and Saturday if we receive the 80mm of precip, high FL and strong wind.
Avalanche Summary
No new avalanches were observed in the Highway Corridor or reported from the Backcountry yesterday. This morning we received a report of 3 natural avalanches in the Connaught drainage, that likely occurred last evening. Frequent Flyer size 1.5 stopping above the skin trail, Cheops Nth 4 size 2.5, and Cheops Nth 1 size 1.5.
Confidence
Problems
Storm Slabs
20cm of new snow, coupled with mod to strong wind from the S-SW likely formed storm slabs in cross-loaded terrain features and immediate lees. Slabs will be most prevalent on Northerly asp; however, Solar asp could become touchy is the sun stays out.
- Watch for stiffer feeling snow. Avoid areas that appear wind loaded.
- Be careful with wind loaded pockets, especially near ridge crests and roll-overs.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Jan 31st, 2020 8:00AM
