Central Grisons and Anterior Rhine

Zervreila

Sun 3 May Sunrise 06:05 20:35 Light rain

Manageable day. Moderate to considerable danger — read the terrain carefully.

Day Risk Profile

Low
All day
Moderate
Later

Avalanche Problems

Dry snow level 1 No distinct problem dry All day
N, NE, E, NW
above 2600m
Dry avalanches can in isolated cases be released in near-surface layers. This applies in particular on extremely steep north and east facing slopes in high Alpine regions. Mostly the avalanches are small. Apart from the danger of being buried, restraint should be exercised as well in view of the danger of avalanches sweeping people along and giving rise to falls. The Avalanche Warning Service currently has only a small amount of information that has been collected in the field, so that the avalanche danger should be investigated especially thoroughly in the relevant locality.
Wet snow level 2 Wet snow wet Later
The surface of the snowpack will only just freeze and will soften earlier than the day before. As the day progresses as a consequence of warming during the day and solar radiation there will be a rapid increase in the danger of wet avalanches. This applies in particular on steep north facing slopes between approximately 2200 and 2600 m, as well as on very steep east and west facing slopes between approximately 2500 and 3000 m. Mostly avalanches are medium-sized. Backcountry tours and ascents to alpine cabins should be started early and concluded timely.

Snowpack & Weather

Snowpack

Saturation of the snowpack is well advanced. The most precarious areas are slopes where weak layers in the old snowpack are becoming wet for the first time. As the weather becomes wetter, this is mainly affecting north-facing slopes between approximately 2200 and 2600 m, but in isolated cases also east- and west-facing slopes between approximately 2500 and 3000 m. Many steep south-facing slopes are snow-free up to around 3000 m and where there is still snow, it is saturated to the high Alpine regions.

Over the often cloudy night into Sunday, the surface of the snowpack will barely freeze, even at high altitudes.

Weather review for Saturday

The night was very clear, the day mostly sunny.

Fresh snow

-

Temperature

At midday at 2000 m a mild +10 °C

Wind

Mainly light

Weather forecast to Sunday

Overnight to Sunday, it will be mostly cloudy in the west, with patchy cloud in the south and east. A foehn wind from the south will pick up over the course of the day. In the west and south, it will be cloudy with some bright spells, and isolated showers are possible in the afternoon. In the east, it will be mostly sunny.

Fresh snow

-

Temperature

At midday at 2000 m, between +8 °C in the north and +5 °C in the south

Wind

Over the course of the day, moderate southerly with a foehn wind in the valleys of the north

Outlook

Monday

Conditions will be cloudy, with bright spells in the east. There will be some precipitation on the main Alpine ridge over the course of the day, falling as snow above approximately 2300 m. There will be a moderate to strong southerly wind, with a foehn wind in the valleys of the north.

The danger of dry avalanches will increase slightly in the high Alpine regions on the main Alpine ridge in Valais. Due to reduced outgoing longwave radiation overnight, there will be a possibility of wet avalanches, especially on north-facing slopes, from the morning onwards.

Tuesday

After a partly clear night, conditions will often be cloudy during the day and snow will fall above approximately 2300 m, most heavily in the south with around 10 cm. In the northeast, conditions will be very sunny and dry. The southwesterly wind will gradually subside.

The danger of dry avalanches will increase slightly in the south and west. Especially in the northeast, there is a possibility of wet avalanches on north-facing slopes as the day progresses.

Issued

2 May 15:00 UTC

Valid until

3 May 15:00 UTC

Next update

3 May 15:00 UTC

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