Persistent weak layers· Morning
- Above 1,800 m
Avalanche danger increases with daytime changes!
Avalanche danger increases with daytime changes!
The avalanche risk is moderate and increases to considerable during the day due to rapidly rising temperatures and plenty of sunshine. Spontaneous medium-sized, sometimes large wet snow avalanches and individual gliding avalanches on steep, slippery ground are to be expected on sunny slopes. Older snowdrift accumulations can still be triggered in isolated cases at higher elevations with large additional loads. Steep slopes, filled-in steep bowls and gullies must be taken into account in this regard.
The snowpack has settled, but quickly becomes moist on the surface, soft and loses firmness due to the sunshine and mild temperatures during the day. Only at higher altitudes and in isolated areas is there older, covered wind slab that is sometimes too disruptive. In very high northern areas, the snow base, fundament is occasionally weakened (persistent weak layer problem).
Sunday brings good mountain weather. The sun will mostly shine, with high cloud fields passing through at times. Only in the late afternoon and evening will more compact clouds move in from the north-west. The wind will be mostly weak to moderate from the west. Temperatures will temporarily rise significantly, with temperatures at 1500 metres around 10 degrees at midday and 5 degrees at 2000 metres. On Monday, compact low clouds will persist into the late afternoon, which may restrict visibility. Light rain will continue to fall, especially in the morning. The wind will blow briskly from the west at times, but will ease during the daytime changes. Temperatures will be 3 degrees at 1500 metres and 0 degrees at 2000 metres.
Cooling stabilises the moist snowpack. No daytime changes.
Bulletin data: Avalanche Warning Service Upper Austria (CC BY 4.0)