Avalanche Forecast
Issued: Feb 10th, 2017 3:30PM
The alpine rating is Storm Slabs, Wind Slabs and Deep Persistent Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeSummary
Confidence
High -
Weather Forecast
Tonight will see the winds continue with flurries bringing another 4cm. Tomorrow we're expecting another unsettled weather day with a little bit of everything The winds will continue to be 40-50km/hr range. The temps will fall overnight. Tomorrow's high will be -14.
Avalanche Summary
-A sz3 was reported on Mt. Warspite. It had a wide propagation and traveled full path. -A sz2.5 was noted on a sub peak of Mt. Chester. West aspect, alpine start zone. It had a very unusual/erratic propagation-The rundle range had a widespread cycle at treeline and below and some alpine activity. Lots of small pockets that pulled out. High consequence avalanches despite being small-Mt Cascade (Cascade Falls & Urs Hole) went sz3
Snowpack Summary
Its hard to paint a widespread picture of the snowpack right now. At treeline, there is 50-60cm of settled storm snow. Generally this new snow is still considered soft (4f), however in more exposed areas it is noticeably denser(1f). This change is from either wind transport, wind pressing or settlement. The real story is what its sitting on. At treeline and below, it is sitting on the facets from earlier this year. During our field trip today (Superslope area) there was widespread whumphing and cracking. In more open, wind exposed terrain, the new snow is sitting on a hard windslab that was buried on Feb 4th. In these areas the snowpack feels better under foot, but under the hardslab is a well developed facet layer that will create large avalanches if it fails. The alpine is currently being hammered by the wind and we are expecting start zones to be filling up with wind blown snow. The forecasting team's gut feeling today is that any open terrain greater than 20 degrees should be avoided.
Problems
Storm Slabs
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Wind Slabs
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Deep Persistent Slabs
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Feb 11th, 2017 2:00PM