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Current natural hazards situation in Switzerland

Updated on: 23.01.2021, 11:31

Teaser

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)

Explanation of the danger level 1:

  • Avalanches: no danger
  • Earthquakes: may be perceptible
  • Floods: transport disruption and damage are not normally to be expected.
  • Forest fires: small fires cannot be entirely ruled out
  • Meteorological phenomena: no (particular) danger, no warnings in place
Danger level 2 (Moderate danger)

Explanation of the danger level 2:

  • Avalanches: very little danger
  • Earthquakes: felt across a wide area, no likelihood of damage to buildings
  • Floods: rivers are unlikely to burst their banks and floods are unlikely but not impossible
  • Forest fires: local fires can start spontaneously
  • Meteorological phenomena  that are normal for the respective season
Danger level 3 (Considerable danger)

Explanation of the danger level 3:

  • Avalanches: exposed objects (mostly sections of transportation routes) can be endangered
  • Earthquakes: felt across a wide area, likelihood of minor damage to buildings
  • Floods: rivers may burst their banks locally in exposed places and flooding may occur.
  • Forest fires: surface fires are likely
  • Meteorological phenomena of an intensity slightly superior to the normal
Danger level 4 (High danger)

Explanation of the danger level 4:

  • Avalanches: exposed objects (mostly sections of transportation routes, but in isolated cases also buildings) can be endangered
  • Earthquakes: felt strongly, likelihood of damage to buildings
  • Floods: rivers may increasingly burst their banks and flooding may occur
  • Forest fires: surface fires are very likely
  • Meteorological phenomena of unusual intensity
Danger level 5 (Very high danger)

Explanation of the danger level 5:

  • Avalanches: transportation routes and settlements can be seriously endangered
  • Earthquakes: felt strongly, high likelihood of widespread and severe damage to buildings
  • Floods: rivers may burst their banks and flooding may occur in many places
  • Forest fires: fires can start at any time
  • Meteorological phenomena of very high intensity

Obey in any event the orders issued by your local authorities and be prepared for exceptional measures.

No danger level

No evaluation

Current warnings issued for Switzerland

  (9 Messages) hide
  • Avalanches:Considerable danger, level 3

    Validity: 23.01.2021, 08:00 - 23.01.2021, 18:00
    Wind slabs, old snow
    In all aspects above approximately 1800m.
    Affected regions
    Adelboden, Blüemlisalp, Engstligen, Gadmertal, Grimsel Pass, Grindelwald, Guttannen, Hasliberg – Rosenlaui, Jaun, Jungfrau – Schilthorn, Kandersteg, Lauterbrunnen, Niedersimmental, Obersimmental, Schreckhorn, Vaud Prealps
    Affected regions
    Adelboden, Blüemlisalp, Engstligen, Gadmertal, Grimsel Pass, Grindelwald, Guttannen, Hasliberg – Rosenlaui, Jaun, Jungfrau – Schilthorn, Kandersteg, Lauterbrunnen, Niedersimmental, Obersimmental, Schreckhorn, Vaud Prealps
    0:Avalanches:3:SLF:1121,1111,1234,1233,1247,1246,1228,1245,1227,1244,1226,1243,1242,1221,1232,1231:
  • Avalanches:Considerable danger, level 3

    Validity: 23.01.2021, 08:00 - 23.01.2021, 18:00
    Wind slabs
    In all aspects above approximately 1800m.
    Affected regions
    Alpstein – Alvier, Bisistal, Brienz-Interlaken, Central Glarus, Engelberg, Flumserberg, Gersau, Glaubenberg, Hohgant, Liechtenstein, Maderanertal, Meiental, Melchtal, Northern Glarus, Pilatus, Sarganserland, Schächental, Southern Glarus-Grosstal, Southern Glarus-Sernftal, Stoos, Uri Rotstock, Ybrig
    Affected regions
    Alpstein – Alvier, Bisistal, Brienz-Interlaken, Central Glarus, Engelberg, Flumserberg, Gersau, Glaubenberg, Hohgant, Liechtenstein, Maderanertal, Meiental, Melchtal, Northern Glarus, Pilatus, Sarganserland, Schächental, Southern Glarus-Grosstal, Southern Glarus-Sernftal, Stoos, Uri Rotstock, Ybrig
    1:Avalanches:3:SLF:3224,2124,2134,2133,2132,2121,2111,3223,2123,3222,2122,3112,2212,3113,3111,2221,2222,3114,1241,2211,1213,3311:
  • Avalanches:Considerable danger, level 3

    Validity: 23.01.2021, 08:00 - 23.01.2021, 18:00
    Wind slabs, old snow
    In all aspects above approximately 2000m.
    Affected regions
    Binntal, Calanda, Davos, Eastern Silvretta, Flims, Konkordia region, Leuk, Leukerbad - Lötschental, Mattmark, Northern Obergoms, Northern Prättigau, Northern Simplon region, Northern Tujetsch, Northern Urseren, Reckingen, Riederalp, Samnaun, Schanfigg, Southern Obergoms, Southern Prättigau, Southern Simplon region, Southern Urseren, Sur Tasna, Val dal Spöl, Val Müstair, Val S-charl, Val Suot, Western Silvretta
    Affected regions
    Binntal, Calanda, Davos, Eastern Silvretta, Flims, Konkordia region, Leuk, Leukerbad - Lötschental, Mattmark, Northern Obergoms, Northern Prättigau, Northern Simplon region, Northern Tujetsch, Northern Urseren, Reckingen, Riederalp, Samnaun, Schanfigg, Southern Obergoms, Southern Prättigau, Southern Simplon region, Southern Urseren, Sur Tasna, Val dal Spöl, Val Müstair, Val S-charl, Val Suot, Western Silvretta
    2:Avalanches:3:SLF:4211,4242,5211,4241,5121,5112,4213,4231,5122,5113,5123,5124,5111,4232,4244,4243,4215,4214,4225,7231,7126,7125,7124,7123,7122,2223,7121,2224:
  • Avalanches:Considerable danger, level 3

    Validity: 23.01.2021, 08:00 - 23.01.2021, 18:00
    Old snow, wind slabs
    In all aspects above approximately 2000m.
    Affected regions
    Arolla, Haut Val de Bagnes, Lower Valleys of Visp, Martigny-Verbier, Monte Rosa, Mountet, Saas Fee, Turtmanntal, Val d'Anniviers, Val d'Hérens, Zermatt
    Affected regions
    Arolla, Haut Val de Bagnes, Lower Valleys of Visp, Martigny-Verbier, Monte Rosa, Mountet, Saas Fee, Turtmanntal, Val d'Anniviers, Val d'Hérens, Zermatt
    3:Avalanches:3:SLF:4224,4116,4223,4115,4222,4221,4212,4125,4124,4123,4122:
  • Avalanches:Considerable danger, level 3

    Validity: 23.01.2021, 08:00 - 23.01.2021, 18:00
    New snow, old snow
    In all aspects above approximately 2000m.
    Affected regions
    Aigle-Leysin, Albulatal, Bex-Villars, Bivio, Conthey-Fully, Domleschg – Lenzerheide, Emosson, Gstaad, Génépi, Iffigen, Lenk, Montana, Monthey-Val d'Illiez, Obersaxen – Safien Valley, Pays d'Enhaut, Rheinwald, Savognin, Schams, Southern Tujetsch, St Moritz, Val Chamuera, Val d'Entremont-Val Ferret, Val Sumvitg, Vouvry, Wildhorn, Zervreila, Zuoz
    Affected regions
    Aigle-Leysin, Albulatal, Bex-Villars, Bivio, Conthey-Fully, Domleschg – Lenzerheide, Emosson, Gstaad, Génépi, Iffigen, Lenk, Montana, Monthey-Val d'Illiez, Obersaxen – Safien Valley, Pays d'Enhaut, Rheinwald, Savognin, Schams, Southern Tujetsch, St Moritz, Val Chamuera, Val d'Entremont-Val Ferret, Val Sumvitg, Vouvry, Wildhorn, Zervreila, Zuoz
    4:Avalanches:3:SLF:5212,5214,1113,7113,1112,1114,4112,5216,4111,5215,7114,4114,7115,4113,1311,1312,5222,5223,5221,4121,1225,1224,1223,1222,5234,5231,5232:
  • Avalanches:Considerable danger, level 3

    Validity: 23.01.2021, 08:00 - 23.01.2021, 18:00
    New snow and wind slabs
    In all aspects above approximately 1800m.
    Affected regions
    alto Moesano, basso Moesano, Lower Valle Leventina, Lower Valle Maggia, Lugano area, Mendrisio area, Riviera, Upper Valle Leventina, Upper Valle Maggia, Val Bedretto, Val Blenio
    Affected regions
    alto Moesano, basso Moesano, Lower Valle Leventina, Lower Valle Maggia, Lugano area, Mendrisio area, Riviera, Upper Valle Leventina, Upper Valle Maggia, Val Bedretto, Val Blenio
    5:Avalanches:3:SLF:6131,6113,6132,6114,6211,6115,6122,6212,6111,6121,6112:
  • Avalanches:Considerable danger, level 3

    Validity: 23.01.2021, 08:00 - 23.01.2021, 18:00
    New snow, old snow
    In all aspects above approximately 2200m.
    Affected regions
    Avers, Bernina region, Corvatsch, Lower Val Poschiavo, Upper Val Poschiavo, Val Bregaglia
    Affected regions
    Avers, Bernina region, Corvatsch, Lower Val Poschiavo, Upper Val Poschiavo, Val Bregaglia
    6:Avalanches:3:SLF:7222,7221,7211,7112,5233,7111:
  • Wind:Moderate danger, level 2

    Validity: 23.01.2021, 13:00 - 24.01.2021, 02:00
    - Highest wind gusts in exposed locations: 60 - 80 km/h
    - Main wind direction southwest to west
    Affected regions
    Basse-Gruyère, Bienne - Neuchâtel, Broye, Estavayer - Cudrefin, Fribourg, Genève, Glâne, Gros-de-Vaud, La Chaux-de-Fonds - Le Locle, Lausanne - Lavaux, Morges - Cossonay, Murten - Kerzers, Nidau - Ins, Nyon - Terre Sainte, Oron - Haute-Broye, Plaine de l'Orbe, Préalpes vaudoises, Saint-Cergue, Val de Ruz - Colombier, Val de Travers, Vallée de Joux, Yverdon - Bevaix
    Affected regions
    Basse-Gruyère, Bienne - Neuchâtel, Broye, Estavayer - Cudrefin, Fribourg, Genève, Glâne, Gros-de-Vaud, La Chaux-de-Fonds - Le Locle, Lausanne - Lavaux, Morges - Cossonay, Murten - Kerzers, Nidau - Ins, Nyon - Terre Sainte, Oron - Haute-Broye, Plaine de l'Orbe, Préalpes vaudoises, Saint-Cergue, Val de Ruz - Colombier, Val de Travers, Vallée de Joux, Yverdon - Bevaix
    7:Wind:2:MCH:205,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227:
  • Avalanches:Moderate danger, level 2

    Validity: 23.01.2021, 08:00 - 23.01.2021, 18:00
    Wind slabs
    In all aspects above approximately 1400m.
    Affected regions
    Appenzell Alps, Bienne - Neuchâtel, Delémont - Bellelay, Eastern Bernese Prealps, Franches-Montagnes, Gruyère, La Chaux-de-Fonds - Le Locle, Moutier - Tavannes, Rothenthurm, Saint-Cergue, Schwarzenberg, Thal, Toggenburg, Val de Ruz - Colombier, Val de Travers, Vallon de Saint-Imier, Vallée de Joux, Western Bernese Prealps, Yverdon - Bevaix
    Affected regions
    Appenzell Alps, Bienne - Neuchâtel, Delémont - Bellelay, Eastern Bernese Prealps, Franches-Montagnes, Gruyère, La Chaux-de-Fonds - Le Locle, Moutier - Tavannes, Rothenthurm, Saint-Cergue, Schwarzenberg, Thal, Toggenburg, Val de Ruz - Colombier, Val de Travers, Vallon de Saint-Imier, Vallée de Joux, Western Bernese Prealps, Yverdon - Bevaix
    8:Avalanches:2:SLF:1122,8114,8113,8112,8111,3211,8215,8214,2131,8222,8213,2112,3221,8221,8212,8224,8211,1211,1212:
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Naturgefahrenbulletin des Bundes

Ausgabedatum: Freitag, 22. Januar 2021 10:56 Uhr
Nächste Information: letzte Information

Ende Starker Föhnsturm in den Alpen 

Der Föhnsturm lässt am Freitagnachmittag nach und wird mit einem Kaltfrontdurchgang am Abend endgültig beendet.  

Wetter  (Stand: 22.01.2021, 10:56 Uhr)

Aktuelle Situation

Die Schweiz liegt seit Mittwoch auf der Vorderseite einer umfangreichen Tiefdruckzone mit Zentrum über Grossbritannien in einer kräftigen südwestlichen Höhenströmung. Durch den grossräumigen Druckfall über Mitteleuropa hat sich damit über den Alpen eine stürmische Föhnlage eingestellt. In den bewarnten Föhntälern wurden seit Mittwochnachmittag verbreitet Windspitzen zwischen 80 und 120 km/h gemessen. In der stärksten Phase des Föhnsturms (Mittwochabend bis Donnerstagmorgen) wurde in Altdorf im Urner Reusstal sogar eine Böenspitze von 133 km/h gemessen. In der Nacht auf heute Freitag führte ein Teiltief von Westen her eine schwache Störung zur Alpennordseite, womit sich der Föhn vorübergehend abgeschwächt hat. Heute Vormittag gewann der Föhnsturm durch die Annäherung eines weiteren Teiltiefs über Südfrankreich nochmals an Stärke.

Prognose

Das erwähnte Teiltief verlagert heute Freitagnachmittag seinen Kern unter Abspaltung in Richtung Ligurisches Meer. Damit erfasst auch eine aktive Kaltfront die Alpennordseite, womit die Föhnphase zu Ende geht. In der Folge kommt es bei mässig bis starkem Südwestwind verbreitet zu Niederschlägen, die Schneefallgrenze sinkt dabei auf der Alpennordseite von etwa 1200 auf rund 500 Meter.