Keep your stoke in check as skies clear! Storm snow sits over a weak lower snowpack.
Avoid exposure to avalanche terrain, natural & human triggered avalanches are likely.
Storm snow is expected to remain sensitive to human triggers. Expect deeper deposits and greater reactivity in wind loaded terrain.
We expect storm slabs to be reactive to natural and human triggers.
If you are out and about in the mountains, please consider posting your observations to the MIN.
By Tuesday morning, storm totals are expected to reach 60-100 cm. Higher elevations are likely heavily wind affected, with deep and reactive deposits. Snow at lower elevations is likely moist from rain or mixed precipitation.
A layer of faceted snow or surface hoar exists below the recent storm snow. A crust from mid-November is buried 70-100 cm deep. Several additional crusts can be found in the lower snowpack, and in some areas, weak, sugary facets can be found near the ground.
Snowpack depths range from 90–160 cm and thin rapidly at lower elevations. Many slopes at treeline and below are expected to reach threshold for avalanche activity with this storm.
Monday Night
Mostly cloudy. 10 to 20 mm of precipitation as snow or rain at treeline. 60 km/h west ridgetop wind. Treeline temperature -2 °C. Freezing level 1700 m.
Tuesday
Mostly clear skies. 30 km/h west ridgetop wind. Treeline temperature -5 °C. Freezing level 1500 m.
Wednesday
Mostly cloudy. 10 to 25 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -2 °C. Freezing level 1300 m.
Thursday
Mostly cloudy. 1 to 5 mm of precipitation as snow or rain at treeline. 30 km/h west ridgetop wind. Treeline temperature -1 °C. Freezing level 1800 m.
More details can be found in the Mountain Weather Forecast.
