Danger level

1900m

Persistent weak layer

1900m

Caution: weak layers in old snowpack

Avalanches can be triggered in the weak layers by one sole skier in some places, and grow to medium size. Danger zones occur mostly in transitions from shallow to deeper snow, e.g. at entry points into gullies and bowls, and on very steep shady slopes. Danger zones and likelihood of triggering tend to increase with ascending altitude. Isolated whumpf noises can indicate imminent danger. On extremely steep sunny slopes, small wet-slides are possible as a result of the daytime warming and solar radiation.

Snowpack

dp.1: deep persistent weak layer

The snowpack is highly diverse over small areas. Shady slopes above 1900m: inside the snowpack are faceted expansively metamorphosed weak layers. Very steep sunny slopes below 2600m: due to higher temperatures and solar radiation, a crust forms on the surface. Weather conditions are moistening the snowpack.

Tendency

Weak layers in the old snowpack demand caution

Danger level

Avalanches hardly possible

Weak layers can trigger in transitions into gullies and bowls in very isolated cases, releases small, particularly on NW/N/NE facing slopes above 2000m, generally triggerable only by large additional loading.

Snowpack

Very little snow on the ground. Below 1600 m hardly any snow on the ground. Shady slopes above 2000m: in lower part of snowpack faceted weak layers.

Tendency

No significant change in avalanche danger levels expected

Danger level

Isolated danger zones occur on NW/N/NE facing slopes above 1800m

Older snowdrift accumulations can be triggered on NW/N/NE facing slopes above 1800m in isolated cases. Isolated danger zones occur in gullies and bowls.

Snowpack

Older snowdrift accumulations lie deposited on NW/N/NE facing slopes above 1800m atop soft layers. Below 1600m there is hardly any snow on the ground.

Tendency

No significant change in avalanche danger levels anticipated