Cornices
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 1.5–2.5
Cornices are large, looming, and can trigger large avalanches on the slopes below. Cornices will become increasingly fragile as temperatures rise through the weekend.
Strong sun and warming will increase the likelihood of both natural and human-triggered avalanches.
Cornices are large, looming, and can trigger large avalanches on the slopes below. Cornices will become increasingly fragile as temperatures rise through the weekend.
Watch for winds leaving more reactive pockets in lee features. Strong solar radiation may increase the cohesion and reactivity of loose snow, especially on steep slopes in the alpine.
Watch for sunny skies and warm spring temperatures to trigger wet loose avalanches on solar slopes. Expect this problem to increase at upper elevations and all aspects with rising freezing levels.
No new avalanches have been reported in this region over the last few days. Observations are currently very limited in this region. Please consider submitting a MIN to let us know what you're seeing out there.
At upper elevations, wind, sun, and spring temperatures continue to impact 20 to 40 cm of recent powder. Sun and rising freezing levels will turn snow moist during the day, warm temperatures overnight will prevent a crust from forming.
Below the recent snow, a hard crust exists on all aspects to at least 2500 m.
The mid and lower snowpack is well settled and strong in most areas.
Check out this Conditions Update for tips on managing the current spring conditions.
Saturday Night
Mostly clear skies. 1 mm of rain at treeline. 30 km/h southwest ridgetop wind. Treeline temperature 1 °C. Freezing level 2000 m.
Sunday
Mostly cloudy. 1 to 3 mm of rain at treeline. 60 km/h southwest ridgetop wind. Treeline temperature 1 °C. Freezing level 2000 m.
Monday
Mostly cloudy. 1 to 2 mm of rain at treeline. 40 km/h west ridgetop wind. Treeline temperature 3 °C. Freezing level 2200 m.
Tuesday
Mostly cloudy. 5 to 15 mm of rain at treeline. 30 km/h west ridgetop wind. Treeline temperature 4 °C. Freezing level 2300 m.
More details can be found in the Mountain Weather Forecast.