Wind slab
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Frsh snowdrifts on north-facing slopes
Frsh snowdrifts on north-facing slopes
Avalanche danger is LOW. Danger zones are found only in isolated cases near ridgelines. Slab avalanches are possible on north-facing slopes by large additional loading.
Prior to this bout of precipitation, snow depths in this region were extremely below average, the ground was often bare of snow. Only in high altitude zones was the old snow able to persist. The old snowpack is layer in extremely unfavourable ways. From Saturday to Sunday, surface hoar formed. This will now be blanketed by fresh snow and new snowdrifts.
On Sunday night, a perturbance will take hold. In the southern mountain massifs, intensive snowfall is expected. From Turrach to Koralpe: up to 25 cm of fresh snow expected. In Niedere Tauern: up to 15 cm. The snowfall level will descend down to valley level. In Styria’s northern regions there will be very little fresh snow. Temperatures will drop during the night: at 2000 m, -7 degrees. Monday: weather conditions will improve. Clouds in Upper Styria will disperse, a few hours of sunshine are expected, particularly in the Northern Alps. Foehn-southerly wind will blow over the ridges. Along the rimline ranges, a bit of snowfall until early afternoon, then dry conditions and dispersed clouds.
Over the next few days, variably shifting wind directions (NW to SW). On Wednesday, more fresh snowfall. A further increase in avalanche danger is highly likely.
Bulletin data: Avalanche Warning Service Styria (CC BY 4.0)