Middle Lys Valley

Light snowfall. Rain to 2300 m. As the penetration by moisture increases moist and wet avalanches are to be expected, but they can reach medium size.

Light snowfall. Rain to 2300 m. As the penetration by moisture increases moist and wet avalanches are to be expected, but they can reach medium size.

The sleet will give rise to thorough wetting of the old snowpack over a wide area below approximately 2400 m. These conditions will cause a rise in the danger of wet and gliding avalanches in particular on east, north and west facing slopes, in particular below approximately 2500 m. 2 to 10 cm of snow, and up to 15 cm in some localities, will fall above approximately 2500 m. This applies in particular along the border with France. The moist fresh snow as well as the isolated winds slabs that are forming can be released by a single winter sport participant, in particular on extremely steep shady slopes above approximately 2500 m. Moist avalanches can additionally in some places be released in the weakly bonded old snow in particular on very steep east and west facing slopes.

Above approximately 2400 m snow fell in the last few days. The high humditiy gave rise to moistening of the snowpack over a wide area below approximately 2800 m. The sleet gave rise on Sunday to thorough wetting of the snowpack over a wide area in all aspects below approximately 2400 m. Towards its base, the snowpack is wet, also on shady slopes below approximately 2400 m. Outgoing longwave radiation during the night will be barely evident. The surface of the snowpack will cool hardly at all during the overcast night and will already be soft in the early morning. Up to 2400 m rain will fall until the evening. These weather conditions will give rise to thorough wetting of the old snowpack below approximately 2400 m. Over a wide area new snow is lying on a moist old snowpack.

Snowfall to intermediate altitudes. Rain to 2400 m. Further increase in danger of moist and wet avalanches.