Avalanche Forecast
Issued: Mar 28th, 2022 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Loose Wet, Wet Slabs and Storm Slabs.
Deryl Kelly,
The snowpack is in a complicated transition at this moment. In many places at TL and below a saturated snowpack is now insulated under a warm blanket of new snow. Coming cold overnight temps will improve travel and reduce the present hazard.
Summary
Weather Forecast
Overnight: Cloudy with clear periods. Alpine temperature: Low -8 °C. Winds light, 15 km/h. FZL valley Bottom
Tuesday: A mix of sun and cloud. Alpine temperature: High -1 °C. Wind light ,15 km/h. FZL: 2200 m
Wednesday: Cloudy with sunny periods and isolated flurries. Trace. Low -9 °C, High -4 °C. Mostly light winds. FZL: 1700m
Snowpack Summary
Up to 25cm of new snow above 2000 m with minimal wind effect overlies sun crust at all elevations and a melt-freeze crust up to 2100m on all aspects. Snow pack below 1700m is mostly isothermal and unsupportive due to steady warm temperatures and rain.
Avalanche Summary
Natural slab/loose wet avalanche cycle occurring in the region, especially BTL. Control work producing predictable loose wet and loose slabs from low elevation targets. Few observations due to very poor visibility.
Confidence
Problems
Loose Wet
Warm precipitation and cloud coverage will prevent a strong overnight freeze. Make sure to investigate the strength of surface crust in the late hours of the day.
- Daytime warming will weaken surface layers.
Aspects: All aspects.
Elevations: Treeline, Below Treeline.
Likelihood
Expected Size
Wet Slabs
Melting and free water in the snowpack is waking up old interfaces. Even small features can produce extremely destructive and dangerous wet slabs.
- Daytime warming will weaken surface layers.
Aspects: North, North East, East, North West.
Elevations: Treeline, Below Treeline.
Likelihood
Expected Size
Storm Slabs
New snow at tree line and lower alpine can be developing as a storm slab with warmer temperatures and minimal wind. Check how well the new snow is bonding to the old surfaces such as crusts.
- Watch for signs of instability such as whumphing and cracking.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Mar 29th, 2022 4:00PM
