Persistent weak layers
- Above treeline
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.
The south-westerly wind will pick up in the first half of the night and will be strong to stormy in the morning. On the northern side of the Alps, the peaks will be covered in clouds in the morning and there will be some new fallen snow. In the afternoon, sunny spells will clear up. It will be warmer at all altitudes. At 2000 metres, temperatures will rise from -10 to -4 degrees, at 1500 metres from -8 to -1 degrees. The snowfall level will be between low altitudes and 800 metres. There will be strong winds with gusts of around 50 km/h from south to west. The snowfall level is in the valleys. Amounts of new snow of up to 10 cm are expected.
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)