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Level 2 (yellow)
Strong wind warning: 25-33 kt (Lake of Constance) Precaution: 25-33 kt, 34-42 kt, > 42 kt Gale warning: 25-33kt, 34-42 kt, > 42 kt Gale warning (lowlands) or Foehn (Alpine valleys): > 75 km/h |
Possible consequences- Surface turbulence for light aircrafts.
- Rough surface on lakes.
- Badly or not fixed objects might fall.
- Smaller branches may break.
Recommendations (The instructions of the authorities are to be followed at any rate!)- Observe the local weather development, get yourself informed and adapt your behaviour to the present conditions
- Pay attention to the gale warnings at the lakes.
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Level 3 (orange)
Strong gale (lowlands): > 90 km/h Foehn storm (Alpine valleys): > 120 km/h Violent storm (mountains): > 150 km/h |
Possible consequences- Broken branches; several trees knocked down.
- Several roofs and chimneys damaged.
- Large, badly fixed objects such as tents or scaffoldings might fall.
- The functioning of road, rail, air and ship traffic, ski-lifts and mountain railways might be affected.
Recommendations (The instructions of the authorities are to be followed at any rate!)- Observe the local weather development, get yourself informed and adapt your behaviour to the present conditions
- Pay attention to the gale warnings at the lakes.
- Objects at risk should be protected and/or fixed before the storm.
- Stay away from edges of forests and exposed trees.
- Pay attention to falling objects such as bricks, branches and electric lines.
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Level 4 (red)
Strong gale (lowlands): > 110 km/h Violent storm (mountains): > 170 km/h |
Possible consequences- Wind-thrown trees.
- Parts of buildings damaged.
- Road, rail, ship and air traffic might be obstructed or limited.
- Large vehicles might be overturned or drift off course
- Even large, well-fixed and objects such as tents and scaffoldings might fall.
- Power blackouts and failure of telephone lines.
Recommendations (The instructions of the authorities are to be followed at any rate!)- Observe the local weather development, get yourself informed and adapt your behaviour to the present conditions
- Pay attention to the gale warnings at the lakes.
- Objects at risk should be protected and/or fixed before the storm.
- Limit unnecessary drives to the minimum.
- Stay away from edges of forests, exposed trees, forests and lake shores.
- Avoid exposed places such as roofs, ledges and projecting parts of buildings.
- Pay attention to falling objects such as bricks, branches and electric lines.
- Do not touch any electric lines lying on the floor.
- Do not make unnecessary phone calls (network failure).
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Level 5 (dark red)
Strong gale (lowlands): > 130 km/h Violent storm (mountains): > 190 km/h |
Possible consequences- Trees, groups of trees, parts of forests and transmission poles knocked down by the wind.
- Parts of buildings severely damaged.
- Disturbance or complete standstill of road, rail, air and ship traffic.
- Large vehicles might be overturned or drift off course.
- Even large, well-fixed objects such as tents and scaffoldings might fall.
- Large waves crashing on the lake shores.
- Large areas affected by prolonged power blackouts and failure of telephone lines.
Recommendations (The instructions of the authorities are to be followed at any rate!)- Observe the local weather development, get yourself informed and adapt your behaviour to the present conditions
- Pay attention to the gale warnings at the lakes.
- Do not leave your houses and apartments.
- Listen to Swiss National radio as well as local radio channels.
- Objects at risk should be protected and/or fixed before the storm.
- Avoid staying outdoors whenever possible. By no means should you go near transmission poles, edges of forests, exposed trees/groups of trees and lake shores areas.
- Whenever possible, refrain from using any kind of vehicle.
- Do not drive through forests or avenues.
- Avoid exposed places such as roofs, ledges and projecting parts of buildings.
- Pay attention to falling objects such as bricks, branches and electric lines.
- Do not touch any electric lines lying on the floor.
- Do not make unnecessary phone calls (network failure).
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