Pre Alps

Glide-snow avalanches + daily cycle of naturally triggered avalanche activity

Glide-snow avalanches + daily cycle of naturally triggered avalanche activity

Avalanche danger is low. Naturally triggered, mostly small glide-snow avalanches and wet slides can release in zones which have not yet discharged in all aspects.

The snowpack is thoroughly wet and tends to glide downhill as a mass. A thin melt-freeze can form at night, then quickly softens in the morning depending on aspect and altitude and steepness gradient. The slopes are becoming bare of snow, even on north-facing slopes the snowline as at 1500 m.

Nocturnal hours: Outgoing longwave radiation is adequate, skies are clear to slightly cloudy, the air is dry. But temperatures are very high. Sunday daytime: The air will remain warm (zero-degree leval at 3600m), sunshine, diffuse light conditions, convective cloud build-up in afternoon. At 2000 m: at midday 10-13 degrees. Moderate westerly winds.

On Monday a cold front will move in, bringing showers which can become heavy later in the day. The air will still be warm, snowfall level descending only slowly to 2300 m. The SW winds will be brisk to strong. Wet-snow avalanche danger will rise temporarily. In high alpine regions, trigger-prone snowdrifts will accumulate.