In the north, it will be very cloudy, with snow falling above approximately 1300 m. The heaviest snowfall will occur along the northern Alpine ridge from the Bernese Oberland to the S\u00e4ntis, with approximately 20 cm expected.
In the south it will be sunny with northerly winds.
There will be a widespread increase in avalanche risk. In Upper Valais and Ticino, it will not change significantly.
After a mostly clear night, it will be sunny. Winds will be light. The zero-degree level will rise to 2100 m in the north and 2500 m in the south.
The danger of dry avalanches will decrease. As a consequence of solar radiation, near-surface wet avalanches are to be expected as the day progresses.
", "valid_from": null, "valid_until": null, "tendency_type": null}], "tendency_lead": null, "weather_review": "Conditions were mostly very cloudy. Snow fell at times above approximately 1500 m. There were brief sunny spells in between, with longer sunny periods in Valais.
Up until Ascension Day afternoon, the following amounts of snow fell above approximately 2000 m:
At midday at 2000 m, between -2 \u00b0C in the north and +2 \u00b0C in the south
Moderate, sometimes strong from the west along the Prealps
", "weather_forecast": "It will be mostly cloudy, with snow falling above approximately 1300 m.
From Ascension Day to Friday afternoon, the following amounts of snow will fall above approximately 1800 m:
At midday at 2000 m, around -2 \u00b0C
Mainly light
", "avalanche_activity": {"comment": "", "highlights": ""}, "snowpack_structure": "New and drifted snow are overlaid on an old snowpack, the top section of which contains coarse-grained weak layers, primarily on north- and east-facing slopes at high altitudes.
"}, "danger": {"key": "moderate", "number": "2", "ratings": [{"key": "moderate", "period": "all_day", "elevation": null, "subdivision": null}], "subdivision": null}, "source": "SLF", "traits": [{"prose": null, "title": "Dry avalanches", "band_id": null, "category": "dry", "problems": [{"extras": {"subdivision": "neutral", "core_zone_text": "Danger level \"moderate\" (2=) in northwest to northeast to southeast facing aspects above 2000m."}, "aspects": ["N", "NE", "E", "SE", "NW"], "elevation": {"lower": 2000, "upper": null, "treeline": false, "treeline_side": null}, "frequency": null, "time_period": "all_day", "comment_html": "As a consequence of new snow and a sometimes strong westerly wind, avalanche prone wind slabs formed on Ascension Day in particular in gullies and bowls and behind abrupt changes in the terrain. These will be covered with new snow and therefore barely recognisable. Persons can release avalanches in some places. These can reach medium size. Careful route selection is recommended.