Watch for reactive storm slabs building through the day at treeline and above. They may have a poor bond to the underlying crust.
15 to 30 cm of new storm snow may accumulate at treeline and above by the afternoon. Expect to find deeper deposits from wind on north through east facing (leeward) slopes
Wet loose avalanches are possible where precipitation falls as rain.
No new avalanches reported on Tuesday.
New snow and wind on Thursday will likely build reactive storm slabs at upper elevations.
Rain and warming to mountaintop has saturated the upper snowpack on all aspects and elevations, except high north-facing alpine slopes. As freezing levels fall Thursday, a widespread crust will form. New snow accompanied by strong south wind will likely build storm slabs at upper elevations. Expect deeper and more reactive deposits on north and east-facing slopes.
A robust crust, formed in early March, can be found in the mid-pack. The snow above is well bonded to this crust.
Below this, the snowpack is well-settled and strong.
Wednesday Night
Cloudy with up to 20 to 35 mm starting as rain and turning to snow above 1200 m by 4 am. 50 to 75 km/h south ridgetop winds. Treeline temperature 2 °C. Freezing level dropping to 1500 m.
Thursday
Mostly cloudy with 10 to 20 mm falling as snow above 1100 m. 40 to 60 km/h south ridgetop winds. Treeline temperature 2 °C. Freezing level 1100 m.
Friday
Mostly cloudy with 20 to 40 mm falling as snow above 1000 m. 50 km/h south ridgetop winds. Treeline temperature 2 °C.
Saturday
Cloudy with 5 to 10 mm falling as snow above 1000 m. 20 to 30 km/h south ridgetop winds. Treeline temperature 2 °C. Freezing level 1000 m.
More details can be found in the Mountain Weather Forecast.
