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Current wind hazards

Updated on: 26.09.2020, 18:29

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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)

No evaluation

Danger level 2 (Moderate danger)

Effects:

  • Surface turbulence hinders light aircraft from flying;
  • Waves higher than usual on lakes;
  • Toppling of objects inadequately secured or free-standing objects;
  • Breaking of smaller branches

Behaviour:

  • Keep an eye on local weather developments
  • Stay away from forests
  • Secure any free-standing objects
  • Always follow the official advice

Description of measurement and prognostic values:

Stormy winds in low and medium-altitude areas (incl. Foehn winds): 70-90 km/h

Danger level 3 (Considerable danger)

Effects:

  • Falling branches and individual trees;
  • Damage to individual roofs;
  • Lightly anchored objects with larger surface areas, such as tents and scaffolding, can be blown over;
  • Some disruption to road, rail, water and air traffic;
  • Possible shutdown of ski lifts and cable cars.

Behaviour:

  • Keep an eye on local weather developments
  • Stay away from forests
  • Secure any free-standing objects
  • Always follow the official advice

Description of measurement and prognostic values:

  • Top wind speeds in low to medium-altitude areas (incl. Foehn winds): 90-110 km/h
  • Top wind speeds in higher-altitude areas (>1800 m above sea level): 130-160 km/h
Danger level 4 (High danger)

Effects:

  • Falling trees;
  • Damage to individual buildings and roofs;
  • Disruption or restriction of road, rail, water and air traffic;
  • Movement of securely anchored objects with a larger surface area, such as tents and scaffolding, as well as moveable objects such as garden furniture;
  • Electricity grid outages and/or failure of telephone networks

Behaviour:

  • Keep an eye on local weather developments
  • Stay away from forests
  • Secure any free-standing objects
  • Always follow the official advice

Description of measurement and prognostic values:

  • Top wind speeds in low to medium-altitude areas (incl. Foehn winds): 110-140 km/h
  • Top wind speeds in higher-altitude areas (>1800 m above sea level): 160-200 km/h
Danger level 5 (Very high danger)

Effects:

  • Falling trees or entire groups of trees or sections of forest as well as electricity pylons and poles;
  • Severe damage to buildings;
  • Road, rail, water and air traffic disrupted or at a standstill;
  • Toppling of larger (empty) vehicles;
  • Securely anchored objects with a larger surface area, such as tents and scaffolding, as well as moveable objects such as garden furniture etc. can be blown over;
  • High waves on lakes, which wash over the banks or shores
  • Electricity grid outages and/or failure of telephone networks for long periods of time and over widespread areas

Behaviour:

  • Keep an eye on local weather developments
  • Stay away from forests
  • Secure any free-standing objects
  • Always follow the official advice

Description of measurement and prognostic values:

  • Top wind speeds in low to medium-altitude areas: > 140 km/h
  • Top wind speeds in higher-altitude areas (>1800 m above sea level): > 200 km/h
No danger level

No evaluation 

Current wind hazards in Switzerland

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  • Wind: No or minor danger, level 1

    Wind: No or minor danger, level 1