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Current wind hazards

Updated on: 19.01.2017, 01:03

Current wind hazards in Switzerland

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Wind: No or minor danger, level 1

Natural hazard bulletin

This message is currently only available in German .

Naturgefahrenbulletin des Bundes

Ausgabedatum: Mittwoch, 18. Januar 2017 18:00 Uhr
Nächste Information: letzte Information

Stürmische Bise bei Dauerfrost

Der Bisengradient lässt allmählich weiter nach und die Windgeschwindigkeit ebenfalls. Die Temperatur bleibt negativ und in der Nähe von Gewässern kann sich mit Gischt immer noch Eis bilden. Überdies können regional noch Schneeverwehungen auftreten.
Prozess Stufe Betroffene Gebiete von bis
Wind 3 Estavayer - Cudrefin, Genève, Morges - Cossonay, Nyon - Terre Sainte, Plaine de l'Orbe 17.01.17, 00 Uhr 18.01.17, 18 Uhr

Wind

Aktuelle Situation

Zwischen einem Hoch über Nordwesteuropa und einem Tief über Italien schwächt sich die Bise auf der Alpennordseite ab.

Die stürmische Bise brachte folgende Böenspitzen (in km/h): Genf 88, Nyon 94, St-Prex 93, Bière 89, Mathod 86, Neuenburg 84. Zudem sind auf zahlreichen Strassenabschnitten Schneeverwehungen und an den Ufern der Gewässer gefrierende Gischt aufgetreten.

Prognose

Die Bisenströmung schwächt sich weiter ab, bleibt aber bestehen. Die Böenspitzen erreichen am Mittwochabend noch 40 bis 60 km/h, am Donnerstag noch 20 bis 40 km/h. Ebenso bleibt die Temperatur unter dem Gefrierpunkt.


Natural hazard bulletin

Date of issue: Wednesday, 18. January 2017 12:00
Next information: Wednesday, 18. January 2017 18:00

Process level Areas affected from to
Wind 3 Estavayer - Cudrefin, Geneva, Morges - Cossonay, Nyon - Terre Sainte, Plaine de l'Orbe 17.01.17, 00h 18.01.17, 18h

Weather / Precipitation

Current situation

Forecast



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)

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