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Current snow hazards

Updated on: 24.05.2016, 07:08

Current snow hazards in Switzerland

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Snow: No or minor danger, level 1

Kontextspalte

Danger level 1 (No or minor danger)
Danger level 2 (Moderate danger)
Danger level 3 (Considerable danger)
Danger level 4 (High danger)
Danger level 5 (Very high danger)
No danger level
Danger level 1 (No or minor danger)

Snow warnings are issued only for danger levels 2-5.

Danger level 2 (Moderate danger)
  • Effects: Slippery conditions due to snow-covered roads
  • Behaviour:
    • Keep an eye on local weather developments
    • Always follow the official recommendations
    • Pay attention to daily avalanche bulletins and additional information from the Institute for Snow and Avalance Research
  • Description of measurement and prognostic values:
    • Snowfall (Western Switzerland, south of the Alps): Lowland areas: 5-10 cm (in max. 24 h), Mountains: 20-40 cm (in max. 24 h)
    • Snowfall (German-speaking Switzerland, Canton Fribourg): Lowlands: 5-15 cm (in max. 24 h), Mountains: 20-40 cm (in max. 24 h)
Danger level 3 (Considerable danger)
  • Effects:
    • Worsening of road condition
    • Disruption to air and rail travel
    • Branches breaking due to snowload
  • Behaviour:
    • Keep an eye on local weather developments
    • Always follow the official recommendations
    • Pay attention to daily avalanche bulletins and additional information from the Institute for Snow and Avalance Research
  • Description of measurement and prognostic values:
    • Heavy/intensive snowfall in lowland areas of German-speaking Switzerland: 15-30 cm/24 h
    • Heavy/intensive snowfall in lowlands of Western Switzerland and south of the Alps: 10-30 cm/24 h
    • Heavy/intensive snowfall in the mountains: 40-70 cm/24 h, 70-100 cm/48 h, 100-140 cm/72 h
Danger level 4 (High danger)
  • Effects:
    • Impassable sections of road;
    • Disruption to air and rail travel;
    • Falling branches or trees as a result of the weight of their snowload;
    • Interruption of electricity supply and/or telephone network, particularly in regions that are not easily accessible;
    • Heavy snowload on roofs.
  • Behaviour:
    • Keep an eye on local weather developments
    • Always follow the official recommendations
    • Pay attention to daily avalanche bulletins and additional information from the Institute for Snow and Avalance Research
  • Description of measurement and prognostic values:
    • Heavy/intensive snowfall in lowland areas of German-speaking Switzerland: 30-50 cm/24 h
    • Heavy/intensive snowfall in lowlands of Western Switzerland and south of the Alps: 30-50 cm/24 h
    • Heavy/intensive snowfall in the mountains: 70-100 cm/24 h, 100-140 cm/48 h, 140-180 cm/72 h
Danger level 5 (Very high danger)
  • Effects:
    • Road and air traffic is brought to a standstill
    • Massive disruption to rail transport
    • Falling branches or trees as a result of the weight of their snowload
    • Heavy snowload on roofs
    • Breakdown of electricity supply and telephone communications network
  • Behaviour:
    • Keep an eye on local weather developments
    • Always follow the official recommendations
    • Pay attention to daily avalanche bulletins and additional information from the Institute for Snow and Avalance Research
  • Description of measurement and prognostic values:
    • Heavy/intensive snowfall in lowland areas of German-speaking Switzerland: >50 cm/24 h
    • Heavy/intensive snowfall in lowlands of Western Switzerland and south of the Alps: >50 cm/24 h
    • Heavy/intensive snowfall in the mountains: >100 cm/24 h, >140 cm/48 h, >180 cm/72 h
No danger level

Snow warnings are issued throughout the year.