Weakly bonded old snow in the inneralpine regions
Edition: 20.12.2021, 17:00 / Next update: 21.12.2021, 18:00
Snowpack
Weak layers exist near the base of the snowpack in particular on west, north and east facing slopes above approximately 2200 m. In western Lower Valais and on the northern flank of the Alps, these near-ground layers are embedded deep, so that the probability of avalanches being released by people is small. From central Valais through Ticino to Grisons, the bonding of the snowpack is least favourable. Here in recent days, medium-sized avalanches have been released by people.
The gliding avalanche activity will continue to decrease slowly. Individual gliding avalanches originating on steep grassy slopes that have retained the snow thus far remain possible.
Observed weather on Monday, 20.12.2021
After a clear night, it was sunny in the mountains during the day.
Fresh snow
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Temperature
At midday at 2000 m: between +1 °C in the west and -1 °C in the east, +3 °C in the south
Wind
In the central and eastern parts of the main Alpine ridge and generally in the high Alpine regions, moderate to strong at times from the north, otherwise light to moderate
Weather forecast through Tuesday, 21.12.2021
After a clear night, it will be sunny during the day in the mountains.
Fresh snow
-
Temperature
At midday at 2000 m: between 0 °C in the north and -4 °C in the south
Wind
At elevated altitudes, moderate at times from the west to northwest, otherwise mostly light
Outlook through Thursday, 23.12.2021
Wednesday will be sunny, and on Thursday cloud will build up from the west. It will, however, remain dry.
The danger of dry avalanches will change very little. Individual gliding avalanches can still occur.