No evaluation 

No evaluation

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

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

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

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