Issued: Jan 31st, 2024 4:00PM
Until cold temperatures lock in this warm and wet snowpack, dangerous avalanche conditions and poor riding quality will exist.
Human triggered avalanches are possible.
A widespread natural avalanche cycle occurred over the past three days. Numerous large (size 2-3.5) wet slab, persistent slab, and wet loose avalanches have been reported from all aspects and elevations.
Until colder temperatures arrive and stabilize the snowpack, rider-triggered avalanches remain likely. Avoid overhead exposure, very large natural avalanches are possible and have the potential to run to valley bottom.
A thin, breakable crust exists above 2300 m with moist snow under the crust. Wet, saturated snow 2200 m and below.
The stress of the new load (warm, wet upper snowpack) has been actively producing large slab avalanches failing down to the early/mid January persistent weak crust/facet layer (30-70 cm down) and the early December rain crust/ facet layer (100+ cm down).
Cloudy, a trace of new snow in the alpine, treeline temperatures near 3°C, south alpine wind 20 gusting to 45 km/h, freezing level around 2200 m.
Mostly cloudy, light rain/ snow amounts, southwest alpine wind 20 to 35 km/h, freezing level around 2200 m.
Cloudy with snow 10-15 cm, treeline temperatures near -2°C, southerly alpine wind 10 to 20 km/h, freezing levels near 1800 m.
Mix of sun and cloud, a trace of new snow, treeline temperatures near -4°C, southwest alpine wind 10 to 25 km/h, freezing level valley 1000 m.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Avoid exposure to overhead avalanche terrain, avalanches may run surprisingly far.
- Be mindful that deep instabilities are still present and have produced recent large avalanches.
- A moist or wet snow surface, pinwheeling and natural avalanches are all indicators of a weakening snowpack.
Several layers of concern exist in the top 150 cm of the snowpack. Elevated freezing levels have made these layers more reactive.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Wet slab and wet loose avalanches are likely when the upper snowpack is saturated from rain and prolonged elevated freezing levels.
Aspects: All aspects.
Elevations: All elevations.
Valid until: Feb 1st, 2024 4:00PM