{"bulletins":[{"bulletinID":"2dda27be-e387-4c44-b173-bcb495238763","validTime":{"startTime":"2026-05-13T15:00:00Z","endTime":"2026-05-14T15:00:00Z"},"nextUpdate":"2026-05-14T15:00:00Z","publicationTime":"2026-05-13T15:00:00Z","lang":"en","unscheduled":false,"regions":[{"regionID":"CH-1312","name":"Monthey-Val d'Illiez"},{"regionID":"CH-4114","name":"Conthey-Fully"},{"regionID":"CH-1223","name":"Wildhorn"},{"regionID":"CH-1114","name":"Bex-Villars"},{"regionID":"CH-4111","name":"Emosson"},{"regionID":"CH-4112","name":"Génépi"}],"dangerRatings":[{"mainValue":"considerable","validTimePeriod":"all_day","customData":{"CH":{"subdivision":"neutral"}}}],"avalancheProblems":[{"problemType":"new_snow","dangerRatingValue":"considerable","elevation":{"lowerBound":2600,"upperBound":null},"aspects":["N","NE","E","SE","NW"],"validTimePeriod":"all_day","customData":{"CH":{"subdivision":"neutral","coreZoneText":"Danger level \"considerable\" (3=) in northwest to northeast to southeast facing aspects above 2600m."}},"comment":"The fresh snow and in particular the wind slabs that are being formed by the sometimes strong westerly wind are prone to triggering. Single winter sport participants can release avalanches. Dry avalanches can additionally be released in the old snowpack in particular on very steep north facing slopes. These can reach large size. Ski touring calls for experience in the assessment of avalanche danger. <br/> The Avalanche Warning Service currently has only a small amount of information that has been collected in the field, so that the avalanche danger should be investigated especially thoroughly in the relevant locality."},{"problemType":"persistent_weak_layers","dangerRatingValue":"considerable","elevation":{"lowerBound":2600,"upperBound":null},"aspects":["N","NE","E","SE","NW"],"validTimePeriod":"all_day","customData":{"CH":{"subdivision":"neutral","coreZoneText":"Danger level \"considerable\" (3=) in northwest to northeast to southeast facing aspects above 2600m."}},"comment":"The fresh snow and in particular the wind slabs that are being formed by the sometimes strong westerly wind are prone to triggering. Single winter sport participants can release avalanches. Dry avalanches can additionally be released in the old snowpack in particular on very steep north facing slopes. These can reach large size. Ski touring calls for experience in the assessment of avalanche danger. <br/> The Avalanche Warning Service currently has only a small amount of information that has been collected in the field, so that the avalanche danger should be investigated especially thoroughly in the relevant locality."}],"customData":{"CH":{"aggregation":[{"category":"dry","validTimePeriod":"all_day","problemTypes":["new_snow","persistent_weak_layers"]}]}},"weatherForecast":{"comment":"<h1>Weather forecast until Ascension Day</h1><p>The night will be rather cloudy. On Ascension Day it will be quite sunny along the Main Alpine Ridge in Upper Valais and in the Gotthard region, while elsewhere it will be very cloudy. Precipitation will be encountered over a wide area. The snowfall level will be between 1300 m in the north and 1800 m in the south.</p><h2 contenteditable=\"false\">Fresh snow</h2><p>Until Ascension Day afternoon, the following amounts will fall above 2000 m:</p><ul><li>Extreme west of Lower Valais, Vaud and Fribourg Alps: 20 to 30 cm</li><li>Other regions of Lower Valais and the northern flank of the Alps, Val Bregaglia and the Bernina region: 10 to 20 cm</li><li>Less elsewhere</li></ul><h2>Temperature</h2><p>At midday at 2000 m, between -3 °C in the north and +1 °C in the south</p><h2>Wind</h2><p>Southwesterly to westerly</p><ul><li>Strong on the northern flank of the Alps during the night</li><li>Elsewhere light to moderate</li></ul>"},"weatherReview":{"comment":"<h1>Weather review for Wednesday</h1><p>There were cloudy spells overnight in the west and south, while skies were quite clear in the east. It was rather sunny during the day.</p><h2>Fresh snow</h2><p>-</p><h2 contenteditable=\"false\">Temperature</h2><p>At midday at 2000 m, between -1 °C in the north and +3 °C in the south</p><h2>Wind</h2><p>Light to moderate from westerly directions</p>"},"snowpackStructure":{"comment":"<h1>Snowpack</h1><p>Fresh snow and wind are forming medium-sized snowdrift accumulations in the west and north, and generally smaller ones elsewhere. Below this, the top section of the old snowpack contains coarse-grained weak layers, primarily on north- and east-facing slopes at high altitudes.</p>"},"tendency":[{"comment":"<h1>Outlook</h1><h2>Friday</h2><p>It will be very cloudy, with around 10 cm of snow falling over a wide area, less in Upper Valais and Ticino. The snowfall level will be around 1300 m. The wind will be mostly light.</p><p>The avalanche danger will not change significantly.</p><h2>Saturday</h2><p>In the north it will be very cloudy with 10 to 20 cm of snowfall over a wide area. The snowfall level will remain at around 1300 m. Along the Main Alpine Ridge and to the south of it, it will be mostly sunny with a strengthening northerly wind.</p><p>There will be a widespread increase in avalanche risk. In Upper Valais and Ticino, it will not change significantly.</p>"}]},{"bulletinID":"25b55831-8d18-477a-a581-aa01875f73dd","validTime":{"startTime":"2026-05-13T15:00:00Z","endTime":"2026-05-14T15:00:00Z"},"nextUpdate":"2026-05-14T15:00:00Z","publicationTime":"2026-05-13T15:00:00Z","lang":"en","unscheduled":false,"regions":[{"regionID":"CH-1246","name":"Gadmertal"},{"regionID":"CH-7222","name":"unteres Puschlav"},{"regionID":"CH-7111","name":"Corvatsch"},{"regionID":"CH-1225","name":"Iffigen"},{"regionID":"CH-1245","name":"Guttannen"},{"regionID":"CH-2134","name":"Bisistal"},{"regionID":"CH-3113","name":"Glarus Süd-Sernftal"},{"regionID":"CH-4213","name":"Konkordia Gebiet"},{"regionID":"CH-7211","name":"Bergell"},{"regionID":"CH-2122","name":"Engelberg"},{"regionID":"CH-4214","name":"Riederalp"},{"regionID":"CH-1247","name":"Grimselpass"},{"regionID":"CH-1232","name":"Blüemlisalp"},{"regionID":"CH-3114","name":"Glarus Mitte"},{"regionID":"CH-4211","name":"Leukerbad - Lötschental"},{"regionID":"CH-4124","name":"Val d'Anniviers"},{"regionID":"CH-7112","name":"Bernina"},{"regionID":"CH-1234","name":"Jungfrau - Schilthorn"},{"regionID":"CH-4113","name":"Val d'Entremont-Val Ferret"},{"regionID":"CH-2223","name":"nördliches Urseren"},{"regionID":"CH-2211","name":"Schächental"},{"regionID":"CH-4241","name":"Reckingen"},{"regionID":"CH-5233","name":"Avers"},{"regionID":"CH-4122","name":"Val d'Hérens"},{"regionID":"CH-4123","name":"Arolla"},{"regionID":"CH-2221","name":"Meiental"},{"regionID":"CH-7221","name":"oberes Puschlav"},{"regionID":"CH-4121","name":"Montana"},{"regionID":"CH-1243","name":"Schreckhorn"},{"regionID":"CH-3112","name":"Glarus Süd-Grosstal"},{"regionID":"CH-2222","name":"Maderanertal"},{"regionID":"CH-4215","name":"Leuk"},{"regionID":"CH-4115","name":"Martigny-Verbier"},{"regionID":"CH-1227","name":"Engstligen"},{"regionID":"CH-5211","name":"nördliches Tujetsch"},{"regionID":"CH-4243","name":"nördliches Obergoms"},{"regionID":"CH-4125","name":"Mountet"},{"regionID":"CH-2224","name":"südliches Urseren"},{"regionID":"CH-2212","name":"Uri Rot Stock"},{"regionID":"CH-4116","name":"Haut Val de Bagnes"}],"dangerRatings":[{"mainValue":"considerable","validTimePeriod":"all_day","customData":{"CH":{"subdivision":"minus"}}}],"avalancheProblems":[{"problemType":"wind_slab","dangerRatingValue":"considerable","elevation":{"lowerBound":2600,"upperBound":null},"aspects":["N","NE","E","SE","NW"],"validTimePeriod":"all_day","customData":{"CH":{"subdivision":"minus","coreZoneText":"Danger level \"considerable\" (3-) in northwest to northeast to southeast facing aspects above 2600m."}},"comment":"As a consequence of new snow and westerly wind, avalanche prone wind slabs will form. Avalanches can additionally in some places be released in the old snowpack on very steep north facing slopes. Single winter sport participants can release avalanches. Avalanches can reach large size in isolated cases. Ski touring calls for experience in the assessment of avalanche danger. <br/> The Avalanche Warning Service currently has only a small amount of information that has been collected in the field, so that the avalanche danger should be investigated especially thoroughly in the relevant locality."},{"problemType":"persistent_weak_layers","dangerRatingValue":"considerable","elevation":{"lowerBound":2600,"upperBound":null},"aspects":["N","NE","E","SE","NW"],"validTimePeriod":"all_day","customData":{"CH":{"subdivision":"minus","coreZoneText":"Danger level \"considerable\" (3-) in northwest to northeast to southeast facing aspects above 2600m."}},"comment":"As a consequence of new snow and westerly wind, avalanche prone wind slabs will form. Avalanches can additionally in some places be released in the old snowpack on very steep north facing slopes. Single winter sport participants can release avalanches. Avalanches can reach large size in isolated cases. Ski touring calls for experience in the assessment of avalanche danger. <br/> The Avalanche Warning Service currently has only a small amount of information that has been collected in the field, so that the avalanche danger should be investigated especially thoroughly in the relevant locality."}],"customData":{"CH":{"aggregation":[{"category":"dry","validTimePeriod":"all_day","problemTypes":["wind_slab","persistent_weak_layers"]}]}},"weatherForecast":{"comment":"<h1>Weather forecast until Ascension Day</h1><p>The night will be rather cloudy. On Ascension Day it will be quite sunny along the Main Alpine Ridge in Upper Valais and in the Gotthard region, while elsewhere it will be very cloudy. Precipitation will be encountered over a wide area. The snowfall level will be between 1300 m in the north and 1800 m in the south.</p><h2 contenteditable=\"false\">Fresh snow</h2><p>Until Ascension Day afternoon, the following amounts will fall above 2000 m:</p><ul><li>Extreme west of Lower Valais, Vaud and Fribourg Alps: 20 to 30 cm</li><li>Other regions of Lower Valais and the northern flank of the Alps, Val Bregaglia and the Bernina region: 10 to 20 cm</li><li>Less elsewhere</li></ul><h2>Temperature</h2><p>At midday at 2000 m, between -3 °C in the north and +1 °C in the south</p><h2>Wind</h2><p>Southwesterly to westerly</p><ul><li>Strong on the northern flank of the Alps during the night</li><li>Elsewhere light to moderate</li></ul>"},"weatherReview":{"comment":"<h1>Weather review for Wednesday</h1><p>There were cloudy spells overnight in the west and south, while skies were quite clear in the east. It was rather sunny during the day.</p><h2>Fresh snow</h2><p>-</p><h2 contenteditable=\"false\">Temperature</h2><p>At midday at 2000 m, between -1 °C in the north and +3 °C in the south</p><h2>Wind</h2><p>Light to moderate from westerly directions</p>"},"snowpackStructure":{"comment":"<h1>Snowpack</h1><p>Fresh snow and wind are forming medium-sized snowdrift accumulations in the west and north, and generally smaller ones elsewhere. Below this, the top section of the old snowpack contains coarse-grained weak layers, primarily on north- and east-facing slopes at high altitudes.</p>"},"tendency":[{"comment":"<h1>Outlook</h1><h2>Friday</h2><p>It will be very cloudy, with around 10 cm of snow falling over a wide area, less in Upper Valais and Ticino. The snowfall level will be around 1300 m. The wind will be mostly light.</p><p>The avalanche danger will not change significantly.</p><h2>Saturday</h2><p>In the north it will be very cloudy with 10 to 20 cm of snowfall over a wide area. The snowfall level will remain at around 1300 m. Along the Main Alpine Ridge and to the south of it, it will be mostly sunny with a strengthening northerly wind.</p><p>There will be a widespread increase in avalanche risk. In Upper Valais and Ticino, it will not change significantly.</p>"}]},{"bulletinID":"e7899469-5664-41f4-9c6d-c65fc1ec12bb","validTime":{"startTime":"2026-05-13T15:00:00Z","endTime":"2026-05-14T15:00:00Z"},"nextUpdate":"2026-05-14T15:00:00Z","publicationTime":"2026-05-13T15:00:00Z","lang":"en","unscheduled":false,"regions":[{"regionID":"CH-1311","name":"Vouvry"},{"regionID":"CH-1222","name":"Gstaad"},{"regionID":"CH-1231","name":"Kandersteg"},{"regionID":"CH-3222","name":"Alpstein - Alvier"},{"regionID":"CH-1224","name":"Lenk"},{"regionID":"CH-2123","name":"Melchtal"},{"regionID":"CH-3224","name":"Sarganserland"},{"regionID":"CH-1244","name":"Hasliberg - Rosenlaui"},{"regionID":"CH-1228","name":"Obersimmental"},{"regionID":"CH-3223","name":"Flumserberg"},{"regionID":"CH-1241","name":"Brienz-Interlaken"},{"regionID":"CH-1226","name":"Adelboden"},{"regionID":"CH-1242","name":"Grindelwald"},{"regionID":"CH-1113","name":"Aigle-Leysin"},{"regionID":"CH-1112","name":"Pays d'Enhaut"},{"regionID":"CH-1233","name":"Lauterbrunnen"},{"regionID":"CH-3311","name":"Liechtenstein"}],"dangerRatings":[{"mainValue":"moderate","validTimePeriod":"all_day","customData":{"CH":{"subdivision":"plus"}}}],"avalancheProblems":[{"problemType":"wind_slab","dangerRatingValue":"moderate","elevation":{"lowerBound":2200,"upperBound":null},"aspects":["N","NE","E","SE","NW"],"validTimePeriod":"all_day","customData":{"CH":{"subdivision":"plus","coreZoneText":"Danger level \"moderate\" (2+) in northwest to northeast to southeast facing aspects above 2200m."}},"comment":"As a consequence of new snow and a sometimes strong westerly wind, avalanche prone wind slabs will form in particular in gullies and bowls and behind abrupt changes in the terrain. These are to be evaluated with care and prudence in steep terrain. Avalanches can reach medium size. <br/> The Avalanche Warning Service currently has only a small amount of information that has been collected in the field, so that the avalanche danger should be investigated especially thoroughly in the relevant locality."}],"customData":{"CH":{"aggregation":[{"category":"dry","validTimePeriod":"all_day","problemTypes":["wind_slab"]}]}},"weatherForecast":{"comment":"<h1>Weather forecast until Ascension Day</h1><p>The night will be rather cloudy. On Ascension Day it will be quite sunny along the Main Alpine Ridge in Upper Valais and in the Gotthard region, while elsewhere it will be very cloudy. Precipitation will be encountered over a wide area. The snowfall level will be between 1300 m in the north and 1800 m in the south.</p><h2 contenteditable=\"false\">Fresh snow</h2><p>Until Ascension Day afternoon, the following amounts will fall above 2000 m:</p><ul><li>Extreme west of Lower Valais, Vaud and Fribourg Alps: 20 to 30 cm</li><li>Other regions of Lower Valais and the northern flank of the Alps, Val Bregaglia and the Bernina region: 10 to 20 cm</li><li>Less elsewhere</li></ul><h2>Temperature</h2><p>At midday at 2000 m, between -3 °C in the north and +1 °C in the south</p><h2>Wind</h2><p>Southwesterly to westerly</p><ul><li>Strong on the northern flank of the Alps during the night</li><li>Elsewhere light to moderate</li></ul>"},"weatherReview":{"comment":"<h1>Weather review for Wednesday</h1><p>There were cloudy spells overnight in the west and south, while skies were quite clear in the east. It was rather sunny during the day.</p><h2>Fresh snow</h2><p>-</p><h2 contenteditable=\"false\">Temperature</h2><p>At midday at 2000 m, between -1 °C in the north and +3 °C in the south</p><h2>Wind</h2><p>Light to moderate from westerly directions</p>"},"snowpackStructure":{"comment":"<h1>Snowpack</h1><p>Fresh snow and wind are forming medium-sized snowdrift accumulations in the west and north, and generally smaller ones elsewhere. Below this, the top section of the old snowpack contains coarse-grained weak layers, primarily on north- and east-facing slopes at high altitudes.</p>"},"tendency":[{"comment":"<h1>Outlook</h1><h2>Friday</h2><p>It will be very cloudy, with around 10 cm of snow falling over a wide area, less in Upper Valais and Ticino. The snowfall level will be around 1300 m. The wind will be mostly light.</p><p>The avalanche danger will not change significantly.</p><h2>Saturday</h2><p>In the north it will be very cloudy with 10 to 20 cm of snowfall over a wide area. The snowfall level will remain at around 1300 m. Along the Main Alpine Ridge and to the south of it, it will be mostly sunny with a strengthening northerly wind.</p><p>There will be a widespread increase in avalanche risk. In Upper Valais and Ticino, it will not change significantly.</p>"}]},{"bulletinID":"f2a21c32-015b-4650-bb47-71efc47ac361","validTime":{"startTime":"2026-05-13T15:00:00Z","endTime":"2026-05-14T15:00:00Z"},"nextUpdate":"2026-05-14T15:00:00Z","publicationTime":"2026-05-13T15:00:00Z","lang":"en","unscheduled":false,"regions":[{"regionID":"CH-7231","name":"Münstertal"},{"regionID":"CH-5215","name":"Val Sumvitg"},{"regionID":"CH-4242","name":"Binntal"},{"regionID":"CH-4222","name":"Zermatt"},{"regionID":"CH-7123","name":"Sur Tasna"},{"regionID":"CH-4223","name":"Saas Fee"},{"regionID":"CH-5216","name":"Zervreila"},{"regionID":"CH-7122","name":"östliche Silvretta"},{"regionID":"CH-7124","name":"Val Suot"},{"regionID":"CH-4221","name":"untere Vispertäler"},{"regionID":"CH-5111","name":"nördliches Prättigau"},{"regionID":"CH-5122","name":"Schanfigg"},{"regionID":"CH-6113","name":"Bleniotal"},{"regionID":"CH-4225","name":"Mattmark"},{"regionID":"CH-5221","name":"Domleschg - Lenzerheide"},{"regionID":"CH-4232","name":"südliches Simplon Gebiet"},{"regionID":"CH-5113","name":"westliche Silvretta"},{"regionID":"CH-5121","name":"Calanda"},{"regionID":"CH-6111","name":"Bedrettotal"},{"regionID":"CH-5223","name":"Rheinwald"},{"regionID":"CH-7121","name":"Samnaun"},{"regionID":"CH-5123","name":"Davos"},{"regionID":"CH-7113","name":"Zuoz"},{"regionID":"CH-5234","name":"Bivio"},{"regionID":"CH-7126","name":"Val S-charl"},{"regionID":"CH-7125","name":"Val dal Spöl"},{"regionID":"CH-4244","name":"südliches Obergoms"},{"regionID":"CH-6212","name":"basso Moesano"},{"regionID":"CH-6112","name":"obere Leventina"},{"regionID":"CH-7115","name":"Val Chamuera"},{"regionID":"CH-4231","name":"nördliches Simplon Gebiet"},{"regionID":"CH-5112","name":"südliches Prättigau"},{"regionID":"CH-6211","name":"alto Moesano"},{"regionID":"CH-5222","name":"Schams"},{"regionID":"CH-5124","name":"Flims"},{"regionID":"CH-5214","name":"Obersaxen - Safiental"},{"regionID":"CH-5231","name":"Albulatal"},{"regionID":"CH-5232","name":"Savognin"},{"regionID":"CH-4224","name":"Monte Rosa"},{"regionID":"CH-7114","name":"St. Moritz"},{"regionID":"CH-5212","name":"südliches Tujetsch"},{"regionID":"CH-4212","name":"Turtmanntal"}],"dangerRatings":[{"mainValue":"moderate","validTimePeriod":"all_day","customData":{"CH":{"subdivision":"plus"}}}],"avalancheProblems":[{"problemType":"wind_slab","dangerRatingValue":"moderate","elevation":{"lowerBound":2600,"upperBound":null},"aspects":["N","NE","E","NW"],"validTimePeriod":"all_day","customData":{"CH":{"subdivision":"plus","coreZoneText":"Danger level \"moderate\" (2+) in northwest to northeast to east facing aspects above 2600m."}},"comment":"As a consequence of new snow and northwesterly wind, wind slabs formed at elevated altitudes. These are only small but can in some cases be released easily. They are to be evaluated with care and prudence in extreme terrain. <br/> Additionally avalanches can also be released in near-surface layers and reach medium size. These avalanche prone locations are rather rare but are barely recognisable. Careful route selection is recommended. <br/> The Avalanche Warning Service currently has only a small amount of information that has been collected in the field, so that the avalanche danger should be investigated especially thoroughly in the relevant locality."},{"problemType":"persistent_weak_layers","dangerRatingValue":"moderate","elevation":{"lowerBound":2600,"upperBound":null},"aspects":["N","NE","E","NW"],"validTimePeriod":"all_day","customData":{"CH":{"subdivision":"plus","coreZoneText":"Danger level \"moderate\" (2+) in northwest to northeast to east facing aspects above 2600m."}},"comment":"As a consequence of new snow and northwesterly wind, wind slabs formed at elevated altitudes. These are only small but can in some cases be released easily. They are to be evaluated with care and prudence in extreme terrain. <br/> Additionally avalanches can also be released in near-surface layers and reach medium size. These avalanche prone locations are rather rare but are barely recognisable. Careful route selection is recommended. <br/> The Avalanche Warning Service currently has only a small amount of information that has been collected in the field, so that the avalanche danger should be investigated especially thoroughly in the relevant locality."}],"customData":{"CH":{"aggregation":[{"category":"dry","validTimePeriod":"all_day","problemTypes":["wind_slab","persistent_weak_layers"]}]}},"weatherForecast":{"comment":"<h1>Weather forecast until Ascension Day</h1><p>The night will be rather cloudy. On Ascension Day it will be quite sunny along the Main Alpine Ridge in Upper Valais and in the Gotthard region, while elsewhere it will be very cloudy. Precipitation will be encountered over a wide area. The snowfall level will be between 1300 m in the north and 1800 m in the south.</p><h2 contenteditable=\"false\">Fresh snow</h2><p>Until Ascension Day afternoon, the following amounts will fall above 2000 m:</p><ul><li>Extreme west of Lower Valais, Vaud and Fribourg Alps: 20 to 30 cm</li><li>Other regions of Lower Valais and the northern flank of the Alps, Val Bregaglia and the Bernina region: 10 to 20 cm</li><li>Less elsewhere</li></ul><h2>Temperature</h2><p>At midday at 2000 m, between -3 °C in the north and +1 °C in the south</p><h2>Wind</h2><p>Southwesterly to westerly</p><ul><li>Strong on the northern flank of the Alps during the night</li><li>Elsewhere light to moderate</li></ul>"},"weatherReview":{"comment":"<h1>Weather review for Wednesday</h1><p>There were cloudy spells overnight in the west and south, while skies were quite clear in the east. It was rather sunny during the day.</p><h2>Fresh snow</h2><p>-</p><h2 contenteditable=\"false\">Temperature</h2><p>At midday at 2000 m, between -1 °C in the north and +3 °C in the south</p><h2>Wind</h2><p>Light to moderate from westerly directions</p>"},"snowpackStructure":{"comment":"<h1>Snowpack</h1><p>Fresh snow and wind are forming medium-sized snowdrift accumulations in the west and north, and generally smaller ones elsewhere. Below this, the top section of the old snowpack contains coarse-grained weak layers, primarily on north- and east-facing slopes at high altitudes.</p>"},"tendency":[{"comment":"<h1>Outlook</h1><h2>Friday</h2><p>It will be very cloudy, with around 10 cm of snow falling over a wide area, less in Upper Valais and Ticino. The snowfall level will be around 1300 m. The wind will be mostly light.</p><p>The avalanche danger will not change significantly.</p><h2>Saturday</h2><p>In the north it will be very cloudy with 10 to 20 cm of snowfall over a wide area. The snowfall level will remain at around 1300 m. Along the Main Alpine Ridge and to the south of it, it will be mostly sunny with a strengthening northerly wind.</p><p>There will be a widespread increase in avalanche risk. In Upper Valais and Ticino, it will not change significantly.</p>"}]},{"bulletinID":"266fbd6d-719a-4bda-a31a-58c2b83e2e61","validTime":{"startTime":"2026-05-13T15:00:00Z","endTime":"2026-05-14T15:00:00Z"},"nextUpdate":"2026-05-14T15:00:00Z","publicationTime":"2026-05-13T15:00:00Z","lang":"en","unscheduled":false,"regions":[{"regionID":"CH-1213","name":"Hohgant"},{"regionID":"CH-2133","name":"Stoos"},{"regionID":"CH-3111","name":"Glarus Nord"},{"regionID":"CH-2132","name":"Ybrig"},{"regionID":"CH-2124","name":"Gersau"},{"regionID":"CH-1111","name":"Waadtländer Voralpen"},{"regionID":"CH-2111","name":"Pilatus"},{"regionID":"CH-2121","name":"Glaubenberg"},{"regionID":"CH-1221","name":"Niedersimmental"},{"regionID":"CH-1121","name":"Jaun"}],"dangerRatings":[{"mainValue":"moderate","validTimePeriod":"all_day","customData":{"CH":{"subdivision":"neutral"}}}],"avalancheProblems":[{"problemType":"wind_slab","dangerRatingValue":"moderate","elevation":{"lowerBound":2000,"upperBound":null},"aspects":["N","NE","E","SE","NW"],"validTimePeriod":"all_day","customData":{"CH":{"subdivision":"neutral","coreZoneText":"Danger level \"moderate\" (2=) in northwest to northeast to southeast facing aspects above 2000m."}},"comment":"As a consequence of new snow and a sometimes strong westerly wind, avalanche prone wind slabs will form in particular in gullies and bowls and behind abrupt changes in the terrain. These are to be evaluated with care and prudence in steep terrain. Avalanches can reach medium size in isolated cases. <br/> The Avalanche Warning Service currently has only a small amount of information that has been collected in the field, so that the avalanche danger should be investigated especially thoroughly in the relevant locality."}],"customData":{"CH":{"aggregation":[{"category":"dry","validTimePeriod":"all_day","problemTypes":["wind_slab"]}]}},"weatherForecast":{"comment":"<h1>Weather forecast until Ascension Day</h1><p>The night will be rather cloudy. On Ascension Day it will be quite sunny along the Main Alpine Ridge in Upper Valais and in the Gotthard region, while elsewhere it will be very cloudy. Precipitation will be encountered over a wide area. The snowfall level will be between 1300 m in the north and 1800 m in the south.</p><h2 contenteditable=\"false\">Fresh snow</h2><p>Until Ascension Day afternoon, the following amounts will fall above 2000 m:</p><ul><li>Extreme west of Lower Valais, Vaud and Fribourg Alps: 20 to 30 cm</li><li>Other regions of Lower Valais and the northern flank of the Alps, Val Bregaglia and the Bernina region: 10 to 20 cm</li><li>Less elsewhere</li></ul><h2>Temperature</h2><p>At midday at 2000 m, between -3 °C in the north and +1 °C in the south</p><h2>Wind</h2><p>Southwesterly to westerly</p><ul><li>Strong on the northern flank of the Alps during the night</li><li>Elsewhere light to moderate</li></ul>"},"weatherReview":{"comment":"<h1>Weather review for Wednesday</h1><p>There were cloudy spells overnight in the west and south, while skies were quite clear in the east. It was rather sunny during the day.</p><h2>Fresh snow</h2><p>-</p><h2 contenteditable=\"false\">Temperature</h2><p>At midday at 2000 m, between -1 °C in the north and +3 °C in the south</p><h2>Wind</h2><p>Light to moderate from westerly directions</p>"},"snowpackStructure":{"comment":"<h1>Snowpack</h1><p>Fresh snow and wind are forming medium-sized snowdrift accumulations in the west and north, and generally smaller ones elsewhere. Below this, the top section of the old snowpack contains coarse-grained weak layers, primarily on north- and east-facing slopes at high altitudes.</p>"},"tendency":[{"comment":"<h1>Outlook</h1><h2>Friday</h2><p>It will be very cloudy, with around 10 cm of snow falling over a wide area, less in Upper Valais and Ticino. The snowfall level will be around 1300 m. The wind will be mostly light.</p><p>The avalanche danger will not change significantly.</p><h2>Saturday</h2><p>In the north it will be very cloudy with 10 to 20 cm of snowfall over a wide area. The snowfall level will remain at around 1300 m. Along the Main Alpine Ridge and to the south of it, it will be mostly sunny with a strengthening northerly wind.</p><p>There will be a widespread increase in avalanche risk. In Upper Valais and Ticino, it will not change significantly.</p>"}]},{"bulletinID":"fa0007a2-e5e9-4445-aed2-04fddcb0a7c8","validTime":{"startTime":"2026-05-13T15:00:00Z","endTime":"2026-05-14T15:00:00Z"},"nextUpdate":"2026-05-14T15:00:00Z","publicationTime":"2026-05-13T15:00:00Z","lang":"en","unscheduled":false,"regions":[{"regionID":"CH-6115","name":"untere Leventina"},{"regionID":"CH-6122","name":"Riviera"},{"regionID":"CH-6121","name":"untere Maggiatäler"},{"regionID":"CH-6114","name":"obere Maggiatäler"}],"dangerRatings":[{"mainValue":"moderate","validTimePeriod":"all_day","customData":{"CH":{"subdivision":"neutral"}}}],"avalancheProblems":[{"problemType":"wind_slab","dangerRatingValue":"moderate","elevation":{"lowerBound":2600,"upperBound":null},"aspects":["N","NE","E","SE","NW"],"validTimePeriod":"all_day","customData":{"CH":{"subdivision":"neutral","coreZoneText":"Danger level \"moderate\" (2=) in northwest to northeast to southeast facing aspects above 2600m."}},"comment":"As a consequence of a sometimes storm force northwesterly wind, wind slabs formed on Tuesday in particular in gullies and bowls and behind abrupt changes in the terrain. These are rather small but in some cases prone to triggering. They are to be evaluated with care and prudence in steep terrain. Apart from the danger of being buried, restraint should be exercised as well in view of the danger of avalanches sweeping people along and giving rise to falls. <br/> The Avalanche Warning Service currently has only a small amount of information that has been collected in the field, so that the avalanche danger should be investigated especially thoroughly in the relevant locality."}],"customData":{"CH":{"aggregation":[{"category":"dry","validTimePeriod":"all_day","problemTypes":["wind_slab"]}]}},"weatherForecast":{"comment":"<h1>Weather forecast until Ascension Day</h1><p>The night will be rather cloudy. On Ascension Day it will be quite sunny along the Main Alpine Ridge in Upper Valais and in the Gotthard region, while elsewhere it will be very cloudy. Precipitation will be encountered over a wide area. The snowfall level will be between 1300 m in the north and 1800 m in the south.</p><h2 contenteditable=\"false\">Fresh snow</h2><p>Until Ascension Day afternoon, the following amounts will fall above 2000 m:</p><ul><li>Extreme west of Lower Valais, Vaud and Fribourg Alps: 20 to 30 cm</li><li>Other regions of Lower Valais and the northern flank of the Alps, Val Bregaglia and the Bernina region: 10 to 20 cm</li><li>Less elsewhere</li></ul><h2>Temperature</h2><p>At midday at 2000 m, between -3 °C in the north and +1 °C in the south</p><h2>Wind</h2><p>Southwesterly to westerly</p><ul><li>Strong on the northern flank of the Alps during the night</li><li>Elsewhere light to moderate</li></ul>"},"weatherReview":{"comment":"<h1>Weather review for Wednesday</h1><p>There were cloudy spells overnight in the west and south, while skies were quite clear in the east. It was rather sunny during the day.</p><h2>Fresh snow</h2><p>-</p><h2 contenteditable=\"false\">Temperature</h2><p>At midday at 2000 m, between -1 °C in the north and +3 °C in the south</p><h2>Wind</h2><p>Light to moderate from westerly directions</p>"},"snowpackStructure":{"comment":"<h1>Snowpack</h1><p>Fresh snow and wind are forming medium-sized snowdrift accumulations in the west and north, and generally smaller ones elsewhere. Below this, the top section of the old snowpack contains coarse-grained weak layers, primarily on north- and east-facing slopes at high altitudes.</p>"},"tendency":[{"comment":"<h1>Outlook</h1><h2>Friday</h2><p>It will be very cloudy, with around 10 cm of snow falling over a wide area, less in Upper Valais and Ticino. The snowfall level will be around 1300 m. The wind will be mostly light.</p><p>The avalanche danger will not change significantly.</p><h2>Saturday</h2><p>In the north it will be very cloudy with 10 to 20 cm of snowfall over a wide area. The snowfall level will remain at around 1300 m. Along the Main Alpine Ridge and to the south of it, it will be mostly sunny with a strengthening northerly wind.</p><p>There will be a widespread increase in avalanche risk. In Upper Valais and Ticino, it will not change significantly.</p>"}]}],"customData":{"CH":{"base":"e5dcd724-404d-4383-96ab-84f56e6f0285:195"}}}