Avalanche Forecast
Issued: Apr 5th, 2021 2:00AM
The alpine rating is Cornices, Loose Wet and Wind Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeSummary
Past Weather
10-15 cm of snow fell above the 800 meter mark combined with moderate to strong south west wind. In the wake of this small weather disturbance, clear sky and warm temps occurred on Sunday with freezing levels rising to 2000 meters during the later afternoon.
Weather Forecast
A ridge of high pressure will provide clear sky and sunshine for both Monday and Tuesday. Beginning late Tuesday a low pressure system to the north of the area will begin to move south bringing increasing south west wind and precipitation. **Monday:** No new precipitation Winds light from the South West , Freezing levels at sea level rising during the daytime to 1600 meters. Temps at 1500 meters up to 1 degrees.**Tuesday:** Trace amounts of snow, Winds light to moderate from the South West, Freezing levels 1000 meters. Temps at 1500 meters -3 degrees.**Wednesday:** 15 to 20 cm of snow , Winds moderate to strong from the South West, Freezing levels 900 meters. Temps at 1500 meters - 4 degrees.
Terrain Advice
Caution when transitioning into freshly wind loaded slopes.Avoid travelling both above and below cornices.Avoid solar aspect during periods of clear sky, warming and when snow surfaces become moist and unconsolidated.
Snowpack Summary
The upper snowpack surfaces consists of some wind loaded pillows on north aspects with south aspects seeing direct sun and warming followed by overnight cooling forming a crust that is supportive to skis. Two crust exist in the upper snowpack one at 30cms and the other at 100cms. Both of these crusts are producing results in the moderate to hard range and are currently not concerning as they are well bridged and protected from the dense layer above. However, expect these layers to produce results/ avalanches during a prolonged period of warmth or a large increase in load such as 30 to 100mm of water. Mid and lower snowpack is well settled and dense. Overall snowpack average depths range from 300cm to 600cm and are dependent on elevation and range location.
Snowpack Details
- Surface: Variable surface conditions, dependent of elevation and orientation.
- Upper: Two reactive melt freeze crusts exist at 30cm and 100cm.
- Mid: Well settled and dense.
- Lower: Well settled and dense.
Confidence
Moderate - Numerous field observations and good agreement between forecasts weather models for this area.
Problems
Cornices
Likelihood
Expected Size
Loose Wet
Likelihood
Expected Size
Wind Slabs
Likelihood
Expected Size
Valid until: Apr 6th, 2021 2:00AM