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Current natural hazards situation in Switzerland

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hazard map

Zürich

Bern

Luzern

Altdorf

Schwyz

Sarnen

Glarus

Zug

Fribourg

Solothurn

Basel

Liestal

Schaffhausen

Appenzell

St. Gallen

Chur

Aarau

Frauenfeld

Bellinzona

Lausanne

Sion

Neuchâtel

Genève

Delémont

Interlaken

La Chaux-de-Fonds

Andermatt

Scuol

St. Moritz

Thun

Naters

Lugano

Vaduz

Baden

Martigny

Monthey

Rapperswil

Davos

Adelboden

Obersaxen

Thusis

Scuol

Huttwil

Faido

Overview

Aarau

Baden

Wohlen

Rheinfelden

Zofingen

Appenzell

Heiden

Urnäsch

Bern

Biel

Thun

Burgdorf

Interlaken

Reinach

Liestal

Basel

Vaduz

Balzers

Mauren

Fribourg

Bulle

Murten

Genève

Glarus

Näfels

Schwanden

Chur

St. Moritz

Klosters

Davos

Delémont

Porrentruy

Bassecourt

Saignelégier

Luzern

Neuchâtel

Stans

Sarnen

Engelberg

Giswil

St. Gallen

Wil

Rapperswil

Schaffhausen

Thayngen

Stein am Rhein

Hallau

Solothurn

Olten

Einsiedeln

Wollerau

Siebnen

Brunnen

Frauenfeld

Kreuzlingen

Arbon

Weinfelden

Romanshorn

Lugano

Locarno

Bellinzona

Altdorf

Erstfeld

Andermatt

Lausanne

Yverdon-les-Bains

Nyon

Vevey

Morges

Sion

Martigny

Sierre

Monthey

Naters

Zug

Rotkreuz

Zürich

Winterthur

Uster

Wetzikon

Dietikon

La Chaux-de-Fonds

Adelboden

Grindelwald

Obersaxen

Thusis

Scuol

Wattwil

Bad Zurzach

Huttwil

Langnau im Emmental

Wolhusen

Faido

Updated on: 09.05.2025, 12:09

Teaser

Key

No danger level

No danger level

No evaluation
No or minor danger
Danger level 1 (No or minor danger)
Explanation of the danger level 1:
- Avalanches: no danger
- Earthquakes: potentially felt
- 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
Moderate danger
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
Considerable danger
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
High danger
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 severe 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
Very high danger
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.
Explanation of the danger levels
General recommendations for action

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

Complex visual representation of the current natural hazards situation in Switzerland. The identical information is available in text form below.

Current warnings issued for Switzerland

(10 Messages) hide

Forest fire: Moderate danger, level 2

Forest fire: Moderate danger, level 2

Effective from: 09.05.2025

More information on measures in force in the cantons to be found on the FOEN Website.

Affected regions

Affected regions

0:Forestfire:2:ForestFire:11:

Explanation of danger level Recommended behaviour
© Federal Office for the Environment FOEN
Flood: Moderate danger, level 2

Flood: Moderate danger, level 2

Validity: 09.05.2025, 11:00 - 13.05.2025, 11:00

Flood warning for the Tresa from Lake Lugano until Lago Maggiore.

1:Flood:2:HydroRiver:34:

Explanation of danger level Recommended behaviour
© Federal Office for the Environment FOEN
Flood: Moderate danger, level 2

Flood: Moderate danger, level 2

Validity: 09.05.2025, 11:00 - 13.05.2025, 11:00

Flood warning for the Lake Lugano.

2:Flood:2:HydroLake:11:

Explanation of danger level Recommended behaviour
© Federal Office for the Environment FOEN
Avalanches: Moderate danger, level 2

Avalanches: Moderate danger, level 2

Validity: 08.05.2025, 17:00 - 09.05.2025, 18:00

Wet-snow avalanches. Danger level "moderate" (2)
Dry avalanches: No distinct avalanche problem. Danger level "low" (1)

Affected regions

Affected regions

3:Avalanches:2:SLF:1222,2211,2134,1231,2122,1224,2123,1244,1228,1241,3114,1226,1242,2212,1233:

Explanation of danger level Recommended behaviour
© WSL Institute for Snow and Avalanche Research SLF
Avalanches: Moderate danger, level 2

Avalanches: Moderate danger, level 2

Validity: 08.05.2025, 17:00 - 09.05.2025, 18:00

Dry avalanches: New snow. Danger level "moderate" (2+) in all aspects above 2600m.
Wet-snow avalanches. Danger level "moderate" (2)

Affected regions

Affected regions

4:Avalanches:2:SLF:7222,7111,6212,6112,6122,6211,7211,5233,5216,7221,6115,6113,6111,5223,7112,6121,6114:

Explanation of danger level Recommended behaviour
© WSL Institute for Snow and Avalanche Research SLF
Avalanches: Moderate danger, level 2

Avalanches: Moderate danger, level 2

Validity: 08.05.2025, 17:00 - 09.05.2025, 18:00

Dry avalanches: No distinct avalanche problem. Danger level "moderate" (2=) in all aspects above 2600m.
Wet-snow avalanches. Danger level "moderate" (2)

Affected regions
Albulatal, Arolla, Bex-Villars, Binntal, Bivio, Blüemlisalp, Calanda, Conthey-Fully, Davos, Domleschg – Lenzerheide, Eastern Silvretta, Emosson, Engstligen, Flims, Gadmertal, Grimsel Pass, Guttannen, Génépi, Haut Val de Bagnes, Iffigen, Jungfrau – Schilthorn, Konkordia region, Leuk, Leukerbad - Lötschental, Lower Valleys of Visp, Maderanertal, Martigny-Verbier, Mattmark, Meiental, Montana, Monte Rosa, Monthey-Val d'Illiez, Mountet, Northern Obergoms, Northern Prättigau, Northern Simplon region, Northern Tujetsch, Northern Urseren, Obersaxen – Safien Valley, Reckingen, Riederalp, Saas Fee, Samnaun, Sarganserland, Savognin, Schams, Schanfigg, Schreckhorn, Southern Glarus-Grosstal, Southern Glarus-Sernftal, Southern Obergoms, Southern Prättigau, Southern Simplon region, Southern Tujetsch, Southern Urseren, St Moritz, Sur Tasna, Turtmanntal, Val Chamuera, Val d'Anniviers, Val d'Entremont-Val Ferret, Val d'Hérens, Val dal Spöl, Val Müstair, Val S-charl, Val Sumvitg, Val Suot, Western Silvretta, Wildhorn, Zermatt, Zuoz

Affected regions
Albulatal, Arolla, Bex-Villars, Binntal, Bivio, Blüemlisalp, Calanda, Conthey-Fully, Davos, Domleschg – Lenzerheide, Eastern Silvretta, Emosson, Engstligen, Flims, Gadmertal, Grimsel Pass, Guttannen, Génépi, Haut Val de Bagnes, Iffigen, Jungfrau – Schilthorn, Konkordia region, Leuk, Leukerbad - Lötschental, Lower Valleys of Visp, Maderanertal, Martigny-Verbier, Mattmark, Meiental, Montana, Monte Rosa, Monthey-Val d'Illiez, Mountet, Northern Obergoms, Northern Prättigau, Northern Simplon region, Northern Tujetsch, Northern Urseren, Obersaxen – Safien Valley, Reckingen, Riederalp, Saas Fee, Samnaun, Sarganserland, Savognin, Schams, Schanfigg, Schreckhorn, Southern Glarus-Grosstal, Southern Glarus-Sernftal, Southern Obergoms, Southern Prättigau, Southern Simplon region, Southern Tujetsch, Southern Urseren, St Moritz, Sur Tasna, Turtmanntal, Val Chamuera, Val d'Anniviers, Val d'Entremont-Val Ferret, Val d'Hérens, Val dal Spöl, Val Müstair, Val S-charl, Val Sumvitg, Val Suot, Western Silvretta, Wildhorn, Zermatt, Zuoz

5:Avalanches:2:SLF:7231,1246,5215,1312,4222,1245,7123,3113,4223,4214,7122,7124,4111,5111,1247,4225,5113,1223,1232,4124,7121,5123,5234,7126,4244,4231,5112,4241,5222,5124,5232,4224,4121,1243,4215,3112,4115,1227,4243,4125,4116,1225,4242,4114,1114,4213,4221,5122,5221,4232,5121,4211,1234,4113,7125,7113,2223,7115,4122,5214,5231,4112,3224,4123,2221,7114,5212,2222,5211,4212,2224:

Explanation of danger level Recommended behaviour
© WSL Institute for Snow and Avalanche Research SLF
Avalanches: No or minor danger, level 1

Avalanches: No or minor danger, level 1

Validity: 08.05.2025, 17:00 - 09.05.2025, 18:00

Wet snow. Danger level "low" (1)

Affected regions

Affected regions

6:Avalanches:1:SLF:1311,1213,3111,2132,3222,2111,2121,1221,1121,2133,2124,1111,3223,1113,1112,3311:

Explanation of danger level Recommended behaviour
© WSL Institute for Snow and Avalanche Research SLF
Drought: No or minor danger, level 1

Drought: No or minor danger, level 1

Effective from: 08.05.2025

- Impact: No (significant) impact.
- Recommended action: No recommendation for action.

Affected regions
Alpstein, Balsthal, Bernese Plateau, Chablais, Eastern Bernese Oberland, Eastern Central Switzerland, Eastern Jura, Eastern Swiss Plateau, Eastern Ticino, Franches-Montagnes, Freiamt, Glarus Alps, Goms, Grisons southern valleys, Gruyère, Lake Geneva Region, Lake Zurich Region, Lower Emmental, Lower Engadine, North-Central Grisons, Northern Ticino, Northern Valais, Oberaargau, Prättigau, Rhine Valley, Sottoceneri, South-Central Grisons, Surselva, Upper Emmental, Upper Engadine, Uri Alps, Valais southern Alps, Visp valleys, Western Bernese Oberland, Western Central Switzerland, Western Jura, Western Swiss Plateau, Western Ticino

Affected regions
Alpstein, Balsthal, Bernese Plateau, Chablais, Eastern Bernese Oberland, Eastern Central Switzerland, Eastern Jura, Eastern Swiss Plateau, Eastern Ticino, Franches-Montagnes, Freiamt, Glarus Alps, Goms, Grisons southern valleys, Gruyère, Lake Geneva Region, Lake Zurich Region, Lower Emmental, Lower Engadine, North-Central Grisons, Northern Ticino, Northern Valais, Oberaargau, Prättigau, Rhine Valley, Sottoceneri, South-Central Grisons, Surselva, Upper Emmental, Upper Engadine, Uri Alps, Valais southern Alps, Visp valleys, Western Bernese Oberland, Western Central Switzerland, Western Jura, Western Swiss Plateau, Western Ticino

7:Drought:1:HydroRegion:37,46,32,33,65,34,35,36,38,40,41,42,39,43,45,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,66,67,31,44,68:

Explanation of danger level Recommended behaviour
© Federal Office for the Environment FOEN
Earthquakes: No or minor danger, level 1

Earthquakes: No or minor danger, level 1

06.05.2025, 03:40 Magnitude 3.9 earthquake at Challes-les-Eaux F. Potentially felt in this warning area. No damage likely.

Affected regions
Aigle - Leysin, Arolla, Basse-Gruyère, Bex - Villars, Broye, Conthey - Fully, Genève, Glâne, Gros-de-Vaud, Haut val de Bagnes, Jogne - Haute-Gruyère, Lausanne - Lavaux, Martigny - Verbier, Monthey - Val d'Illiez, Morges - Cossonay, Nyon - Terre Sainte, Oberes Mattertal, Oberes Saastal, Oron - Haute-Broye, Pays-d'Enhaut, Plaine de l'Orbe, Préalpes vaudoises, Saanen-Gsteig, Saint-Cergue, Sion - Crans-Montana, St. Stephan-Lenk, Turtmanntal, Val d'Anniviers, Val d'Entremont - Val Ferret, Val d'Hérens, Vallée de Joux, Vallée du Trient, Vispertal - Nanztal, Vouvry, Yverdon - Bevaix

Affected regions
Aigle - Leysin, Arolla, Basse-Gruyère, Bex - Villars, Broye, Conthey - Fully, Genève, Glâne, Gros-de-Vaud, Haut val de Bagnes, Jogne - Haute-Gruyère, Lausanne - Lavaux, Martigny - Verbier, Monthey - Val d'Illiez, Morges - Cossonay, Nyon - Terre Sainte, Oberes Mattertal, Oberes Saastal, Oron - Haute-Broye, Pays-d'Enhaut, Plaine de l'Orbe, Préalpes vaudoises, Saanen-Gsteig, Saint-Cergue, Sion - Crans-Montana, St. Stephan-Lenk, Turtmanntal, Val d'Anniviers, Val d'Entremont - Val Ferret, Val d'Hérens, Vallée de Joux, Vallée du Trient, Vispertal - Nanztal, Vouvry, Yverdon - Bevaix

8:Earthquake:1:MCH:112,113,211,214,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,243,244,245,247,248:21,555

Explanation of danger level Recommended behaviour
© Swiss Seismological Service (SED) at ETH Zurich
Flood: No danger level

Flood: No danger level

Validity: 09.05.2025, 11:00 - 11.05.2025, 11:00

A flood danger assessment for small and medium-sized waterbodies cannot be made for this area. There are no danger levels.

Affected regions

Affected regions

9:Flood:0:HydroRegion:53:

Explanation of danger level Recommended behaviour
© Federal Office for the Environment FOEN
No warnings available.

No warnings available.

No warnings available for the selected regions and water bodies.

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Naturgefahrenbulletin des Bundes

Ausgabedatum: Freitag, 9. Mai 2025 11:00 Uhr
Nächste Information: Montag, 12. Mai 2025 11:00 Uhr

Mässige Hochwassergefahr am Lago di Lugano und an der Tresa

Prozess	Stufe	Betroffene Gebiete	von	bis
Hochwasser	2	Lago di Lugano	09.05.25, 11 Uhr	13.05.25, 11 Uhr
Hochwasser	2	Tresa	09.05.25, 11 Uhr	13.05.25, 11 Uhr

Fliessgewässer und Seen (Stand: 09.05.2025, 11:00 Uhr)

Aktuelle Situation

In den letzten 5 Tagen sind im Einzugsgebiet des Lago di Lugano knapp 200 mm Niederschlag gefallen. Der Pegel des Lago di Lugano stieg infolgedessen um etwa 50 cm an. Er erreichte am Dienstag die Gefahrenstufe 2 (mässige Hochwassergefahr) und stieg seitdem um weitere 12 cm. In Melide wird derzeit ein Pegelstand von 271.02 m ü.M. gemessen. Der Ausfluss aus dem Lago di Lugano erhöhte sich aufgrund des Seepegelanstieges ebenfalls. Er wird derzeit in Ponte Tresa knapp unterhalb der Schwelle zur Gefahrenstufe 3 (erheblich Hochwassergefahr) bei rund 100-110 m3/s reguliert.

Prognose

Der Pegel des Lago di Lugano wird im heutigen Tagesverlauf noch um wenige Zentimeter innerhalb der Gefahrenstufe 2 ansteigen. Ab Samstag wird der Wasserstand nach einer kurzen Plateauphase wieder langsam zu sinken beginnen. Derzeit wird damit gerechnet, dass der Seepegel erst zum Wochenbeginn die Gefahrenstufe 2 verlassen wird.

Der Abfluss der Tresa wird aufgrund des hohen Seepegels weiterhin auf erhöhtem Niveau reguliert werden. Eine schrittweise Drosselung des Abflusses ist mit sinkendem Seepegel im Verlaufe des Wochenendes möglich. Die Warnung für die Tresa (Gefahrenstufe 2) wird voraussichtlich bis zum Beginn der nächsten Woche beibehalten werden.

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Contents area

Current natural hazards situation in Switzerland

Current warnings issued for Switzerland

Forest fire: Moderate danger, level 2

Forest fire: Moderate danger, level 2

Flood: Moderate danger, level 2

Flood: Moderate danger, level 2

Flood: Moderate danger, level 2

Flood: Moderate danger, level 2

Avalanches: Moderate danger, level 2

Avalanches: Moderate danger, level 2

Avalanches: Moderate danger, level 2

Avalanches: Moderate danger, level 2

Avalanches: Moderate danger, level 2

Avalanches: Moderate danger, level 2

Avalanches: No or minor danger, level 1

Avalanches: No or minor danger, level 1

Drought: No or minor danger, level 1

Drought: No or minor danger, level 1

Earthquakes: No or minor danger, level 1

Earthquakes: No or minor danger, level 1

Flood: No danger level

Flood: No danger level

No warnings available.

No warnings available.

Maps

Avalanches

Drought

Earthquakes

Flood

Forest fire

Frost

Heat waves

Rain

Slippery roads

Snow

Thunderstorms

Wind

Naturgefahrenbulletin des Bundes

Mässige Hochwassergefahr am Lago di Lugano und an der Tresa

Fliessgewässer und Seen (Stand: 09.05.2025, 11:00 Uhr)

Aktuelle Situation

Prognose

Weitere Informationen

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