Bollettino valanghe

Luganese

SLF
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Pericolo valanghe

All elevations
2= · Moderato
Non aggiornato — questo bollettino è scaduto last year. Stai vedendo condizioni passate, non il bollettino in corso.

Problemi valanghivi

  • Persistent weak layers

    • Above 2,000 m
  • Wet snow

    • Tutte le quote
  • Gliding snow

    • Tutte le quote

Snowpack Structure

Snowpack

Last week there was considerable snowfall on the Main Alpine Ridge and to the south of there. Especially on shady slopes, this snow is lying on an unfavourable, faceted old snow surface where it is still sometimes prone to triggering. North of the Main Alpine Ridge, the thin layers of drifted snow from the last week are only prone to triggering in isolated cases. In the Gotthard region, easily triggered snowdrift accumulations developed on Wednesday.

In Valais, Ticino and Grisons, deep layers of the snowpack are also loose and faceted. Especially along the central and eastern parts of the Main Alpine Ridge, avalanches can penetrate deep layers of the snowpack on shady slopes.

Individual wet and gliding avalanches are possible.

Weather Forecast

Weather forecast to Thursday

After a mostly clear night, it will be sunny.

Fresh snow

-

Temperature

At midday at 2000 m, between +4 °C in the north and 0 °C in the south.

Wind

  • Mostly light.
  • Tendency towards light foehn winds in the Alpine valleys of the north

Weather Review

Weather review for Wednesday

After a mostly clear night, it was sunny.

Fresh snow

-

Temperature

At midday at 2000 m, between +3 °C in the north and -1 °C in the south.

Wind

Light to moderate from southerly directions

Tendency

OutlookFriday

The night into Friday will be clear in the east, otherwise often overcast. During the day it will be partly sunny with dense high patches of cloud. The zero-degree level will increase on Friday towards 3000 m in the north, while in the south it will be around 2000 m. There will be a light to moderate southwesterly wind. There will be increasing foehn winds in the Alpine valleys of the north.

The danger of dry avalanches will continue to decrease. With the consequence of warming, more wet and gliding avalanches are expected as the day progresses.

Saturday

In the north, it will be partly sunny with dense high patches of cloud. In the south it will be very cloudy and precipitation will fall, above 1500 m around 10 to 20 cm of snow. However, the exact quantities are still uncertain. There will be a moderate to strong wind from the south. A strong foehn wind will blow in the Alpine valleys of the north.

The danger of dry avalanches will increase over a wide area with new fallen snow in the south and sometimes strong winds in the north. The danger of wet avalanches will not change significantly.

Bulletin data: WSL Institute for Snow and Avalanche Research SLF (CC BY 4.0)

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