Date Issued
Apr 24, 2025, 11 PM
Valid Until
Apr 25, 2025, 11 PM
Starting and ending your day early is always a good idea this time of year.
Expect avalanche activity to increase on solar slopes as the day heats up.
Alpine
Treeline
Below Treeline
Considerable
Considerable
Spring
Alpine
Treeline
Below Treeline
Norating
Norating
Norating
- A moist or wet snow surface, pinwheeling, and natural avalanches are all indicators of a weakening snowpack.
- Avoid travelling on slopes below cornices.
A MIN reported loose snow avalanches on the steep S slopes of Swiss Peak Wednesday.
Neighboring operations have been observing solar triggered loose snow avalanches out of steep terrain this week, up to size 3. As well as a few natural cornice failures up to size 2.5
Soft, surface storm slabs were reactive to ski cuts on steep slopes in the Mt Fidelity area at treeline on Monday. These were size 1.5 were running far due to the crusty bed surface.
~15 cm of storm snow fell early in the week above 1600. Below this new snow a crust is present on solar slopes in the alpine and on all aspects below 2400m. This crust has been a bed surface this week for small loose dry and storm slab avalanches. Both of these problems have been human and naturally triggered.
Rising freezing levels will rapidly deteriorate the upper snowpack as spring conditions return to treeline and into the alpine.
Expect variable conditions below treeline.
- Uncertainty is due to difficult to forecast freezing levels.