Solar radiation will be a question mark for tomorrow. If the sun appears, or the cloud is thin expect the snow to become moist quickly. In that case, cornices and loose wet avalanches become a possibility.
Weather Forecast
Tonight the freezing level will drop to well below valley bottom. Tomorrow will be mainly cloudy with an alpine high of -4. Winds will be westerly in direction and mostly light. Freezing level will creep up to 1700m. The forecast shows the cloud layer to be fairly thin. Expect a fair amount of solar radiation to creep through.
Avalanche Summary
Some isolated loose wet up to sz1 and pinwheeling out of steep terrain.
Snowpack Summary
Convective flurries have added some new snow to certain areas. The Aster Lake area had almost 10cm overnight while the Spray road area only had 5cm. The new snow hasn't added much in terms of load or additional avalanche problems. Solar input today made for moist snow on all aspects up to 2200m and all the way to peak height on southern aspects. Expect this to make yet another temperature crust overnight tonight. The complete lack of wind has kept any wind slab development minimal, however there may be settlement slabs on solar aspects as the new snow quickly settles.
Problems
Persistent Slabs
Persistent Slab avalanches are the release of a cohesive layer of snow (a slab) in the middle to upper snowpack, when the bond to an underlying persistent weak layer breaks. Persistent layers include: surface hoar, depth hoar, near-surface facets, or faceted snow. Persistent weak layers can continue to produce avalanches for days, weeks or even months, making them especially dangerous and tricky. As additional snow and wind events build a thicker slab on top of the persistent weak layer, this avalanche problem may develop into a Deep Persistent Slab.
Deep Persistent Slabs
Deep Persistent Slab avalanches are the release of a thick cohesive layer of hard snow (a slab), when the bond breaks between the slab and an underlying persistent weak layer deep in the snowpack. The most common persistent weak layers involved in deep, persistent slabs are depth hoar or facets surrounding a deeply buried crust. Deep Persistent Slabs are typically hard to trigger, are very destructive and dangerous due to the large mass of snow involved, and can persist for months once developed. They are often triggered from areas where the snow is shallow and weak, and are particularly difficult to forecast for and manage.