Avalanche Forecast
Issued: Feb 7th, 2015 6:38PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Storm Slabs and Deep Persistent Slabs.
aaron beardmore,
Avalanche Canada
Be mindful that the snowpack at low elevations is isothermal and human triggering is likely.
Avalanche control is planned for Mt. Bosworth, Field and Stephen. No activities in these areas tomorrow please.
Summary
Weather Forecast
Light snowfall amounts (up to 12cm) are expected over the next few days. Winds will remain light with cloud cover. The trend on the danger rating will not change drastically with the subtle input.
Snowpack Summary
45-70cm of recent storm snow sits on a crust from Jan 30 which exists up to 2300m on all aspects (higher on solar aspects).This crust interface will be a layer of failure with 20cm of additional loading in the last 24 hours. This large stress to the snowpack may cause the Nov 6th facets problem to re-emerge in shallow snowpack areas.
Avalanche Summary
No avalanches were reported or observed directly in the Little Yoho region, however, Mt. Dennis (adjacent to Little Yoho) had an extensive cycle early this morning, up to size 3. It is suspected that a major avalanche cycle has effected Little Yoho region today.
Confidence
Problems
Storm Slabs
Expect storm slabs to continue to fail, either within the storm snow or on the Jan 30 interface, especially at upper elevations.
- Be aware of the potential for wide propagations.
- Minimize overhead exposure during periods of heavy loading from new snow, wind.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Deep Persistent Slabs
45-70 cm's of new storm sits on a crust from january 30th. This interface should be considered suspect and large avalanches could have the potential to step down the basal facets for full depth releases in Alpine and TL start zones.
- Be aware of the potential for wide propagations.
- The new snow will require several days to settle and stabilize.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Feb 8th, 2015 4:00PM
