Natural avalanches are possible, human-triggered avalanches are likely. Small avalanches in many areas, or large avalanches in specific areas, or very large avalanches in isolated areas.
The dreary spring rains continue, with a rain/snow line that has been fluctuating between about 2800m and 2200m. Stronger S winds and more precipitation are coming over the next few days, with Wednesday looking like a doozy - stay tuned. The problems right now continue to be wind slabs high up, wet snow avalanches in many areas, and an old persistent layer still lurking at the base of the snowpack.
Forecast issued at: 6 April 2025 09:30
Forecast valid until: 9 April 2025 09:30
Forecaster: Manu Greer
> 2600m
Dangerous avalanche conditions. Careful snowpack evaluation, cautious route-finding and conservative decision-making essential.
2000m - 2600m
Heightened avalanche conditions on specific terrain features. Evaluate snow and terrain carefully; identify features of concern.
< 2000m
Generally safe avalanche conditions. Watch for unstable snow on isolated terrain features.
Strong SW and S winds moving the new snow have built dense, reactive slabs near ridges, which if triggered could also trigger older layers.
Sensitivity | The specific avalanche problem type is highly reactive to human rider triggers. |
Distribution | Specific areas, with common characteristics. Evidence for instabilities exists, but it is not obvious and finding it requires careful observations. |
Time of Day | All day |
Trend | Deteriorating |
Confidence | High |
Weak facet layers in the lower half of the snowpack, in high alpine shady areas, could create a large avalanche event if triggered. As the snowpack warms, these layers are becoming moist and are less reactive, but they have still 'performed' in recent tests, especially in shallower areas (where the snowpack is less than about 140cm). There is a lot of new weight of wet snow that has been added over the last few days, and observations have shown that the old layers have released recently as wet slabs, up to about 2850m. Be very wary of wide, steep slopes in the high alpine especially on N aspects, and avoid common trigger points such as areas where the snow is shallow (e.g. near rocks) or steep convex roll-overs.
Sensitivity | The specific avalanche problem type is difficult to trigger with a human rider. |
Distribution | A few, isolated locations; evidence for instabilities is rare and hard to find. |
Time of Day | All day |
Trend | Improving |
Confidence | Moderate |
With wet new snow, rain lower down, a saturated snowpack at lower elevations, and a high freezing level, wet loose AND wet slab avalanches are possible everywhere, even on N aspects in the high alpine zone. The danger is lower in the sub-lapine due to lack of snow, but beware of areas that still hold snow as rain or heating can make it move.
Sensitivity | The specific avalanche problem type is reactive to human rider triggers. Easy to trigger with ski cut. |
Distribution | Many locations. Evidence for instabilities is frequently found, in many locations. |
Time of Day | All day |
Trend | No change |
Confidence | High |
Recent Avalanches:
Multiple wet loose and wet sab avalanches size 1 -3 from many aspects and evelvations were seen in the last week - observations limited by visibility in the last couple of days.
Snowpack:
The snow is warm and moist everywhere, even at high elevations on shady aspects, although there are still loose snow crystals near the ground in the high alpine zone. A soft melt-freeze crust funder the new snow was found at 2960m on a NW aspect, and the lower loose layer of old moist facets failed across the block in an ECT test at the same location. Total rainfall recorded at 1950m since Monday 31st of March is nearly 70mm, with 30 - 40 cm of snow building up at high elevations, affected by S 1/4 winds. Although there has been a little snow accumulation down to 2200m in the last couple of days, the previous rain has eroded most of the snowpack below 2500m on S aspects, with more snow surviving in some N aspect areas.
More dreary weather with rain down low and a bit more snow up high, heaviest on Monday when up to 30cm could fall after midday. A slight clearance on Tuesday morning then more light rain/snow before some heavy precipitaion arrives on Wednesday. Stronger S/SW winds are forecast at high elevtions over the next 3 days. Freezing level 2400m rising to 2900m Tuesday.
Our avalanche forecasters are internationally qualified and experienced professionals, and data is provided by skilled observers. We encourage you to make your own observations and decisions, without relying solely on our forecast, since any forecast is a generalised 'best guess', and in certain cases it might be inaccurate. We can not be held liable for any actions you take in the backcountry that may result in injury, loss or death.