Avalanche Forecast
Issued: Jan 4th, 2023 4:00PM
The alpine rating is Wind Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeBe careful in steep alpine terrain where wind slab avalanches could be triggered.
Summary
Confidence
Moderate
Avalanche Summary
On Tuesday, our field team observed a few large (size 2) natural wind slabs avalanches in north and east facing alpine gullies. These likely occurred during the last weekend's storm.
Snowpack Summary
Observations from Wednesday suggest 30 to 40 cm of low density snow can still be found in wind sheltered terrain, while exposed alpine terrain has been impacted by southerly winds. Recent snow is well bonded to underlying layers, with the possible exception of steep wind-loaded slopes. Snow depths at White Pass are around 100 cm in sheltered areas and closer to 200 cm on wind-loaded slopes.
Weather Summary
Wednesday night
Partly cloudy with some isolated flurries bringing trace amounts of snow, 30 km/h wind from the southeast, treeline temperatures drop to -10 °C.
Thursday
Mix of sun and cloud, no precipitation, 20 km/h wind from the southeast, treeline temperatures around -10 °C.
FridayCloudy with light flurries bringing trace amounts of snow in the afternoon, 30 to 40 km/h wind from the southeast, treeline temperatures around -8 °C.
SaturdayCloudy with periods of snow bringing 5 to 10 cm of snow, 50 to 70 km/h wind from the south, treeline temperatures around -5 °C.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Watch for wind-loaded pockets especially around ridgecrest and in extreme terrain.
- The best and safest riding will be on slopes that have soft snow without any slab properties.
- Use ridges or ribs to avoid areas of wind loaded snow.
Problems
Wind Slabs
Wind slabs may be lingering in alpine terrain and along ridgetops. Fresh slabs could form this week if the wind picks up.
Aspects: North, North East, East, North West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Jan 5th, 2023 4:00PM