Persistent weak layers
- Above 1,900 m
Fresh wind slab!
Fresh wind slab!
The avalanche risk is still moderate above around 1900 metres and low below. There is still a persistent weak layer problem. In addition, fresh wind slab is to be expected! The avalanche prone locations are limited but still difficult to recognise. The avalanche prone locations are mainly on north to east facing slopes above 1900 metres. Older wind slab snow is in the northern sector, fresh wind slab snow in the eastern sector. Slab avalanches can be triggered by individuals in a few places here. The slab can tear through to the layer close to the ground.
The persistent weak layer problem still exists. Surface hoar, angular forms or a hard old snowpack have been covered. In the northern and eastern exposures, the old snowpack continues to be weakened by crusts and layers with faceted crystals and floating snow.
In the night to Sunday it will be cloudy and it will start to snow in the northern Alps. The wind picks up during the night and the snow showers spread to the Niedere Tauern. There will be hardly any snow further south. On Sunday, dense clouds will accumulate from the north until midday on the northern side of the Alps. It will snow lightly with limited visibility, especially in the morning. In the Niedere Tauern, amounts of new snow of up to 10 cm are expected. The weather will improve in the afternoon. On the southern side of the Alps, the north foehn will ensure sunny conditions from midday at the latest. There will be strong northerly winds, even stormy in exposed areas. This will ease in the afternoon. It has cooled down considerably: between -7 and -11 degrees are expected at an altitude of 2000 metres by midday.
Strong to stormy westerly winds will blow across the northern side of the Alps on Monday night as a warm front passes through. A few centimetres of new fallen snow may fall in the northern Limestone Alps. Monday will be mostly free of precipitation during the day and the clouds will soften on the southern side of the Alps. In the evening and during the night on Tuesday, a north-westerly weather pattern will set in, resulting in renewed snowfall in the northern foothills. No significant change in the avalanche risk is expected.
Bulletin data: Avalanche Warning Service Styria (CC BY 4.0)