Issued: Apr 1st, 2023 4:00PM
The alpine rating is Deep Persistent Slabs., the treeline rating is , and the below treeline rating is Known problems include
Clouds with light snowfall should discourage heating through the start of next week with minimal natural avalanche activity expected.
With a generally weak snowpack, human triggering of the lower snowpack facet and depth hoar layers remains a significant concern.
No new avalanches were reported or observed today.
A few cm of new snow buries sun crusts to ridgetop and temperature crusts below 1500m.
The March 25 interface is down 5 to 15 cm and the March 12 interface is down 15 to 30cm. Both of these are represented by crusts on solar aspects and facets on shaded slopes.
The January sun crust and facet interface is down 40 to 120cm.
The November depth hoar at the base of the snowpack remains weak.
Saturday evening a low over the Prairies will maintain cloud and flurries as winds shift to the NW at 30km/h. Snowfall amounts: 5-10cm through midday Sunday.
By Sunday afternoon the low will drive an upslope push as winds shift NE and diminish. Snowfall amounts will likely favour the eastern slopes and range from 5-15cm through Monday morning.
Terrain and Travel Advice
- Avoid thin areas like rock outcroppings where you're most likely to trigger avalanches failing on deep weak layers.
Deep Persistent Slabs
Both the January and November weak layers remain a concern for triggering. Avalanches have been running full path mainly resulting from recent warming. Snowpack tests continue to produce moderate to hard sudden collapse results.
Aspects: All aspects.
Elevations: All elevations.
Valid until: Apr 2nd, 2023 4:00PM