[ { "regions": [ { "regionID": "CH-6131" }, { "regionID": "CH-6132" } ], "validTime": { "startTime": "2021-03-23T08:00:00+01:00", "endTime": "2021-03-23T17:00:00+01:00" }, "source": {}, "dangerRatings": [ { "elevation": {}, "customData": [], "mainValue": "low", "aspect": [] } ], "avalancheProblems": [], "tendency": { "validTime": {}, "tendencyComment": "On each of the two days it will be sunny. On Thursday, high-altitude cloudbanks will pass over during the day and convective cloud will build up. The zero degree level will rise to approximately 2000 m, and a little higher in the west on Wednesday. At elevated altitudes the wind will be light to moderate, initially from the north, then from the west. \n The danger of dry avalanches will decrease slowly. The danger of wet snow and gliding avalanches will vary slightly during the day." }, "publicationTime": "2021-03-23T08:00:00+01:00", "avalancheActivityHighlights": "Considerable avalanche danger will be encountered over a wide area", "snowpackStructureComment": "The strong wind from northerly directions has transported large quantities of the loosely bonded snow that was lying in many locations. At high altitudes in particular, sometimes large snow drift accumulations have formed; these can be released easily. As the strong wind eases during Monday night, the period of snow transport will end. \n Last week\u2019s fresh snow and wind slab layers are lying on a weak layer close to the old snow surface. On the northern flank of the Alps this weak layer is embedded deep and no longer likely to release avalanches. In Valais and Grisons, it is nearer the surface and prone to fracturing on north and east facing slopes in particular, but also on west facing slopes in some instances. In this transitional boundary between layers, several avalanches, in some cases dangerously large ones, have been triggered by people in recent days. In particular in places with shallow snow cover, individual avalanches have penetrated near-ground layers of old snow in their track.", "wxSynopsisComment": "Sunday night in the north was predominantly very cloudy with light snowfall in the east in particular. The south was mostly clear. During the day it became increasingly sunny from the west, including at high altitudes as the upper cloud limit dropped. The south was mostly sunny. \nFresh snow: From Sunday afternoon until Monday afternoon down to low altitudes: - Pr\u00e4ttigau: 5 to 10 cm\n - Central and eastern parts of the northern flank of the Alps, rest of northern and central Grisons: up to 5 cm\n - Elsewhere: smaller amounts or none\n \n \nTemperature: At midday at 2000 m: between -2 \u00b0C in southern Valais and western Ticino, and -6 \u00b0C in the east \nWind: - Jura, western Prealps: moderate bise\n - Otherwise at elevated altitudes, moderate to strong northeasterly, occasionally storm force on the northern Alpine ridge and the main Alpine ridge\nOn Monday night the amount of cloud will continue to decrease, including in the northeast. During the day it will be mostly sunny in Valais, and predominantly sunny in the east and south. \nFresh snow: - \nTemperature: Increasing; at midday at 2000 m: between 0 \u00b0C in the west, -3 \u00b0C in the south and -5 \u00b0C in the east \nWind: From northerly directions - Easing during the night\n - Light to moderate during the day", "bulletinID": "8948221", "avalancheActivityComment": "Individual avalanche prone locations are to be found in particular in extremely steep terrain. Even a small avalanche can sweep snow sport participants along and give rise to falls." }, { "regions": [ { "regionID": "CH-7222" }, { "regionID": "CH-4223" }, { "regionID": "CH-7221" }, { "regionID": "CH-4232" }, { "regionID": "CH-7211" }, { "regionID": "CH-7112" }, { "regionID": "CH-7111" }, { "regionID": "CH-6122" }, { "regionID": "CH-6212" }, { "regionID": "CH-6121" }, { "regionID": "CH-4225" } ], "validTime": { "startTime": "2021-03-23T08:00:00+01:00", "endTime": "2021-03-23T17:00:00+01:00" }, "source": {}, "dangerRatings": [ { "elevation": { "lowerBound": "2200" }, "customData": [], "mainValue": "moderate", "aspect": [ "N", "NE", "E", "SE", "S", "SW", "W", "NW" ] } ], "avalancheProblems": [], "tendency": { "validTime": {}, "tendencyComment": "On each of the two days it will be sunny. On Thursday, high-altitude cloudbanks will pass over during the day and convective cloud will build up. The zero degree level will rise to approximately 2000 m, and a little higher in the west on Wednesday. At elevated altitudes the wind will be light to moderate, initially from the north, then from the west. \n The danger of dry avalanches will decrease slowly. The danger of wet snow and gliding avalanches will vary slightly during the day." }, "publicationTime": "2021-03-23T08:00:00+01:00", "avalancheActivityHighlights": "Considerable avalanche danger will be encountered over a wide area", "snowpackStructureComment": "The strong wind from northerly directions has transported large quantities of the loosely bonded snow that was lying in many locations. At high altitudes in particular, sometimes large snow drift accumulations have formed; these can be released easily. As the strong wind eases during Monday night, the period of snow transport will end. \n Last week\u2019s fresh snow and wind slab layers are lying on a weak layer close to the old snow surface. On the northern flank of the Alps this weak layer is embedded deep and no longer likely to release avalanches. In Valais and Grisons, it is nearer the surface and prone to fracturing on north and east facing slopes in particular, but also on west facing slopes in some instances. In this transitional boundary between layers, several avalanches, in some cases dangerously large ones, have been triggered by people in recent days. In particular in places with shallow snow cover, individual avalanches have penetrated near-ground layers of old snow in their track.", "wxSynopsisComment": "Sunday night in the north was predominantly very cloudy with light snowfall in the east in particular. The south was mostly clear. During the day it became increasingly sunny from the west, including at high altitudes as the upper cloud limit dropped. The south was mostly sunny. \nFresh snow: From Sunday afternoon until Monday afternoon down to low altitudes: - Pr\u00e4ttigau: 5 to 10 cm\n - Central and eastern parts of the northern flank of the Alps, rest of northern and central Grisons: up to 5 cm\n - Elsewhere: smaller amounts or none\n \n \nTemperature: At midday at 2000 m: between -2 \u00b0C in southern Valais and western Ticino, and -6 \u00b0C in the east \nWind: - Jura, western Prealps: moderate bise\n - Otherwise at elevated altitudes, moderate to strong northeasterly, occasionally storm force on the northern Alpine ridge and the main Alpine ridge\nOn Monday night the amount of cloud will continue to decrease, including in the northeast. During the day it will be mostly sunny in Valais, and predominantly sunny in the east and south. \nFresh snow: - \nTemperature: Increasing; at midday at 2000 m: between 0 \u00b0C in the west, -3 \u00b0C in the south and -5 \u00b0C in the east \nWind: From northerly directions - Easing during the night\n - Light to moderate during the day", "bulletinID": "8948218", "avalancheActivityComment": "As a consequence of northeasterly wind, avalanche prone wind slabs formed in the last three days. The avalanche prone locations are to be found in particular in gullies and bowls, and behind abrupt changes in the terrain. The number and size of avalanche prone locations will increase with altitude. Careful route selection is important. 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." }, { "regions": [ { "regionID": "CH-1122" }, { "regionID": "CH-1121" }, { "regionID": "CH-1111" }, { "regionID": "CH-1112" }, { "regionID": "CH-1233" }, { "regionID": "CH-1224" }, { "regionID": "CH-1222" }, { "regionID": "CH-1228" }, { "regionID": "CH-1244" }, { "regionID": "CH-1226" }, { "regionID": "CH-1242" }, { "regionID": "CH-1241" }, { "regionID": "CH-1211" }, { "regionID": "CH-1221" }, { "regionID": "CH-1212" }, { "regionID": "CH-1213" }, { "regionID": "CH-1231" } ], "validTime": { "startTime": "2021-03-23T08:00:00+01:00", "endTime": "2021-03-23T17:00:00+01:00" }, "source": {}, "dangerRatings": [ { "elevation": { "lowerBound": "1800" }, "customData": [], "mainValue": "moderate", "aspect": [ "N", "NE", "E", "SE", "S", "SW", "W", "NW" ] } ], "avalancheProblems": [], "tendency": { "validTime": {}, "tendencyComment": "On each of the two days it will be sunny. On Thursday, high-altitude cloudbanks will pass over during the day and convective cloud will build up. The zero degree level will rise to approximately 2000 m, and a little higher in the west on Wednesday. At elevated altitudes the wind will be light to moderate, initially from the north, then from the west. \n The danger of dry avalanches will decrease slowly. The danger of wet snow and gliding avalanches will vary slightly during the day." }, "publicationTime": "2021-03-23T08:00:00+01:00", "avalancheActivityHighlights": "Considerable avalanche danger will be encountered over a wide area", "snowpackStructureComment": "The strong wind from northerly directions has transported large quantities of the loosely bonded snow that was lying in many locations. At high altitudes in particular, sometimes large snow drift accumulations have formed; these can be released easily. As the strong wind eases during Monday night, the period of snow transport will end. \n Last week\u2019s fresh snow and wind slab layers are lying on a weak layer close to the old snow surface. On the northern flank of the Alps this weak layer is embedded deep and no longer likely to release avalanches. In Valais and Grisons, it is nearer the surface and prone to fracturing on north and east facing slopes in particular, but also on west facing slopes in some instances. In this transitional boundary between layers, several avalanches, in some cases dangerously large ones, have been triggered by people in recent days. In particular in places with shallow snow cover, individual avalanches have penetrated near-ground layers of old snow in their track.", "wxSynopsisComment": "Sunday night in the north was predominantly very cloudy with light snowfall in the east in particular. The south was mostly clear. During the day it became increasingly sunny from the west, including at high altitudes as the upper cloud limit dropped. The south was mostly sunny. \nFresh snow: From Sunday afternoon until Monday afternoon down to low altitudes: - Pr\u00e4ttigau: 5 to 10 cm\n - Central and eastern parts of the northern flank of the Alps, rest of northern and central Grisons: up to 5 cm\n - Elsewhere: smaller amounts or none\n \n \nTemperature: At midday at 2000 m: between -2 \u00b0C in southern Valais and western Ticino, and -6 \u00b0C in the east \nWind: - Jura, western Prealps: moderate bise\n - Otherwise at elevated altitudes, moderate to strong northeasterly, occasionally storm force on the northern Alpine ridge and the main Alpine ridge\nOn Monday night the amount of cloud will continue to decrease, including in the northeast. During the day it will be mostly sunny in Valais, and predominantly sunny in the east and south. \nFresh snow: - \nTemperature: Increasing; at midday at 2000 m: between 0 \u00b0C in the west, -3 \u00b0C in the south and -5 \u00b0C in the east \nWind: From northerly directions - Easing during the night\n - Light to moderate during the day", "bulletinID": "8948226", "avalancheActivityComment": "As a consequence of northeasterly wind, avalanche prone wind slabs formed in the last three days. They are to be found in particular in gullies and bowls, and behind abrupt changes in the terrain. At elevated altitudes the prevalence and size of these avalanche prone locations will increase. Careful route selection is required. The wind slabs are to be bypassed in particular in steep terrain. Below approximately 2400 m: On steep east, south and west facing slopes gliding avalanches are possible. In addition as the day progresses on south facing slopes, moist snow slides and avalanches are possible." }, { "regions": [ { "regionID": "CH-8114" }, { "regionID": "CH-8113" }, { "regionID": "CH-8112" }, { "regionID": "CH-8111" }, { "regionID": "CH-8215" }, { "regionID": "CH-8214" }, { "regionID": "CH-8222" }, { "regionID": "CH-8213" }, { "regionID": "CH-8221" }, { "regionID": "CH-8212" }, { "regionID": "CH-8224" }, { "regionID": "CH-8211" } ], "validTime": { "startTime": "2021-03-23T08:00:00+01:00", "endTime": "2021-03-23T17:00:00+01:00" }, "source": {}, "dangerRatings": [ { "elevation": { "lowerBound": "1400" }, "customData": [], "mainValue": "moderate", "aspect": [ "SW", "W", "NW", "N" ] } ], "avalancheProblems": [], "tendency": { "validTime": {}, "tendencyComment": "On each of the two days it will be sunny. On Thursday, high-altitude cloudbanks will pass over during the day and convective cloud will build up. The zero degree level will rise to approximately 2000 m, and a little higher in the west on Wednesday. At elevated altitudes the wind will be light to moderate, initially from the north, then from the west. \n The danger of dry avalanches will decrease slowly. The danger of wet snow and gliding avalanches will vary slightly during the day." }, "publicationTime": "2021-03-23T08:00:00+01:00", "avalancheActivityHighlights": "Considerable avalanche danger will be encountered over a wide area", "snowpackStructureComment": "The strong wind from northerly directions has transported large quantities of the loosely bonded snow that was lying in many locations. At high altitudes in particular, sometimes large snow drift accumulations have formed; these can be released easily. As the strong wind eases during Monday night, the period of snow transport will end. \n Last week\u2019s fresh snow and wind slab layers are lying on a weak layer close to the old snow surface. On the northern flank of the Alps this weak layer is embedded deep and no longer likely to release avalanches. In Valais and Grisons, it is nearer the surface and prone to fracturing on north and east facing slopes in particular, but also on west facing slopes in some instances. In this transitional boundary between layers, several avalanches, in some cases dangerously large ones, have been triggered by people in recent days. In particular in places with shallow snow cover, individual avalanches have penetrated near-ground layers of old snow in their track.", "wxSynopsisComment": "Sunday night in the north was predominantly very cloudy with light snowfall in the east in particular. The south was mostly clear. During the day it became increasingly sunny from the west, including at high altitudes as the upper cloud limit dropped. The south was mostly sunny. \nFresh snow: From Sunday afternoon until Monday afternoon down to low altitudes: - Pr\u00e4ttigau: 5 to 10 cm\n - Central and eastern parts of the northern flank of the Alps, rest of northern and central Grisons: up to 5 cm\n - Elsewhere: smaller amounts or none\n \n \nTemperature: At midday at 2000 m: between -2 \u00b0C in southern Valais and western Ticino, and -6 \u00b0C in the east \nWind: - Jura, western Prealps: moderate bise\n - Otherwise at elevated altitudes, moderate to strong northeasterly, occasionally storm force on the northern Alpine ridge and the main Alpine ridge\nOn Monday night the amount of cloud will continue to decrease, including in the northeast. During the day it will be mostly sunny in Valais, and predominantly sunny in the east and south. \nFresh snow: - \nTemperature: Increasing; at midday at 2000 m: between 0 \u00b0C in the west, -3 \u00b0C in the south and -5 \u00b0C in the east \nWind: From northerly directions - Easing during the night\n - Light to moderate during the day", "bulletinID": "8948224", "avalancheActivityComment": "The older wind slabs represent the main danger. Persons can release avalanches in some places. The avalanche prone locations are to be found in particular in gullies and bowls, and behind abrupt changes in the terrain. Small and, in isolated cases, medium-sized avalanches are possible. Careful route selection is required." }, { "regions": [ { "regionID": "CH-4211" }, { "regionID": "CH-4213" }, { "regionID": "CH-1113" }, { "regionID": "CH-1114" }, { "regionID": "CH-4215" }, { "regionID": "CH-4112" }, { "regionID": "CH-4214" }, { "regionID": "CH-4111" }, { "regionID": "CH-4114" }, { "regionID": "CH-4113" }, { "regionID": "CH-1234" }, { "regionID": "CH-1311" }, { "regionID": "CH-1312" }, { "regionID": "CH-1232" }, { "regionID": "CH-4241" }, { "regionID": "CH-4243" }, { "regionID": "CH-4121" }, { "regionID": "CH-1225" }, { "regionID": "CH-1223" }, { "regionID": "CH-1247" }, { "regionID": "CH-1246" }, { "regionID": "CH-1245" }, { "regionID": "CH-1227" }, { "regionID": "CH-2223" }, { "regionID": "CH-2224" }, { "regionID": "CH-1243" }, { "regionID": "CH-2221" }, { "regionID": "CH-2222" } ], "validTime": { "startTime": "2021-03-23T08:00:00+01:00", "endTime": "2021-03-23T17:00:00+01:00" }, "source": {}, "dangerRatings": [ { "elevation": { "lowerBound": "2400" }, "customData": [], "mainValue": "considerable", "aspect": [ "N", "NE", "E", "SE", "S", "SW", "W", "NW" ] } ], "avalancheProblems": [], "tendency": { "validTime": {}, "tendencyComment": "On each of the two days it will be sunny. On Thursday, high-altitude cloudbanks will pass over during the day and convective cloud will build up. The zero degree level will rise to approximately 2000 m, and a little higher in the west on Wednesday. At elevated altitudes the wind will be light to moderate, initially from the north, then from the west. \n The danger of dry avalanches will decrease slowly. The danger of wet snow and gliding avalanches will vary slightly during the day." }, "publicationTime": "2021-03-23T08:00:00+01:00", "avalancheActivityHighlights": "Considerable avalanche danger will be encountered over a wide area", "snowpackStructureComment": "The strong wind from northerly directions has transported large quantities of the loosely bonded snow that was lying in many locations. At high altitudes in particular, sometimes large snow drift accumulations have formed; these can be released easily. As the strong wind eases during Monday night, the period of snow transport will end. \n Last week\u2019s fresh snow and wind slab layers are lying on a weak layer close to the old snow surface. On the northern flank of the Alps this weak layer is embedded deep and no longer likely to release avalanches. In Valais and Grisons, it is nearer the surface and prone to fracturing on north and east facing slopes in particular, but also on west facing slopes in some instances. In this transitional boundary between layers, several avalanches, in some cases dangerously large ones, have been triggered by people in recent days. In particular in places with shallow snow cover, individual avalanches have penetrated near-ground layers of old snow in their track.", "wxSynopsisComment": "Sunday night in the north was predominantly very cloudy with light snowfall in the east in particular. The south was mostly clear. During the day it became increasingly sunny from the west, including at high altitudes as the upper cloud limit dropped. The south was mostly sunny. \nFresh snow: From Sunday afternoon until Monday afternoon down to low altitudes: - Pr\u00e4ttigau: 5 to 10 cm\n - Central and eastern parts of the northern flank of the Alps, rest of northern and central Grisons: up to 5 cm\n - Elsewhere: smaller amounts or none\n \n \nTemperature: At midday at 2000 m: between -2 \u00b0C in southern Valais and western Ticino, and -6 \u00b0C in the east \nWind: - Jura, western Prealps: moderate bise\n - Otherwise at elevated altitudes, moderate to strong northeasterly, occasionally storm force on the northern Alpine ridge and the main Alpine ridge\nOn Monday night the amount of cloud will continue to decrease, including in the northeast. During the day it will be mostly sunny in Valais, and predominantly sunny in the east and south. \nFresh snow: - \nTemperature: Increasing; at midday at 2000 m: between 0 \u00b0C in the west, -3 \u00b0C in the south and -5 \u00b0C in the east \nWind: From northerly directions - Easing during the night\n - Light to moderate during the day", "bulletinID": "8948219", "avalancheActivityComment": "As a consequence of northeasterly wind, avalanche prone wind slabs formed in the last three days. These can be released by a single winter sport participant. Avalanches can reach medium size. The wind slabs are to be avoided. Backcountry touring calls for experience in the assessment of avalanche danger. Below approximately 2400 m: On steep east, south and west facing slopes gliding avalanches are possible. In addition as the day progresses on south facing slopes, moist snow slides and avalanches are possible." }, { "regions": [ { "regionID": "CH-4242" }, { "regionID": "CH-4224" }, { "regionID": "CH-4116" }, { "regionID": "CH-4115" }, { "regionID": "CH-4231" }, { "regionID": "CH-4222" }, { "regionID": "CH-4221" }, { "regionID": "CH-4212" }, { "regionID": "CH-4244" }, { "regionID": "CH-4125" }, { "regionID": "CH-4124" }, { "regionID": "CH-4123" }, { "regionID": "CH-4122" } ], "validTime": { "startTime": "2021-03-23T08:00:00+01:00", "endTime": "2021-03-23T17:00:00+01:00" }, "source": {}, "dangerRatings": [ { "elevation": { "lowerBound": "2200" }, "customData": [], "mainValue": "considerable", "aspect": [ "N", "NE", "E", "W", "NW" ] } ], "avalancheProblems": [], "tendency": { "validTime": {}, "tendencyComment": "On each of the two days it will be sunny. On Thursday, high-altitude cloudbanks will pass over during the day and convective cloud will build up. The zero degree level will rise to approximately 2000 m, and a little higher in the west on Wednesday. At elevated altitudes the wind will be light to moderate, initially from the north, then from the west. \n The danger of dry avalanches will decrease slowly. The danger of wet snow and gliding avalanches will vary slightly during the day." }, "publicationTime": "2021-03-23T08:00:00+01:00", "avalancheActivityHighlights": "Considerable avalanche danger will be encountered over a wide area", "snowpackStructureComment": "The strong wind from northerly directions has transported large quantities of the loosely bonded snow that was lying in many locations. At high altitudes in particular, sometimes large snow drift accumulations have formed; these can be released easily. As the strong wind eases during Monday night, the period of snow transport will end. \n Last week\u2019s fresh snow and wind slab layers are lying on a weak layer close to the old snow surface. On the northern flank of the Alps this weak layer is embedded deep and no longer likely to release avalanches. In Valais and Grisons, it is nearer the surface and prone to fracturing on north and east facing slopes in particular, but also on west facing slopes in some instances. In this transitional boundary between layers, several avalanches, in some cases dangerously large ones, have been triggered by people in recent days. In particular in places with shallow snow cover, individual avalanches have penetrated near-ground layers of old snow in their track.", "wxSynopsisComment": "Sunday night in the north was predominantly very cloudy with light snowfall in the east in particular. The south was mostly clear. During the day it became increasingly sunny from the west, including at high altitudes as the upper cloud limit dropped. The south was mostly sunny. \nFresh snow: From Sunday afternoon until Monday afternoon down to low altitudes: - Pr\u00e4ttigau: 5 to 10 cm\n - Central and eastern parts of the northern flank of the Alps, rest of northern and central Grisons: up to 5 cm\n - Elsewhere: smaller amounts or none\n \n \nTemperature: At midday at 2000 m: between -2 \u00b0C in southern Valais and western Ticino, and -6 \u00b0C in the east \nWind: - Jura, western Prealps: moderate bise\n - Otherwise at elevated altitudes, moderate to strong northeasterly, occasionally storm force on the northern Alpine ridge and the main Alpine ridge\nOn Monday night the amount of cloud will continue to decrease, including in the northeast. During the day it will be mostly sunny in Valais, and predominantly sunny in the east and south. \nFresh snow: - \nTemperature: Increasing; at midday at 2000 m: between 0 \u00b0C in the west, -3 \u00b0C in the south and -5 \u00b0C in the east \nWind: From northerly directions - Easing during the night\n - Light to moderate during the day", "bulletinID": "8948222", "avalancheActivityComment": "Avalanches can be released in near-surface layers and reach dangerously large size. This applies in particular on steep west, north and east facing slopes. Remotely triggered avalanches are possible. Whumpfing sounds can indicate the danger. \n In the last two days avalanche prone wind slabs formed in particular at elevated altitudes. These avalanche prone locations are to be found in all aspects above approximately 2400 m. Avalanches can reach medium size. \n Single winter sport participants can release avalanches. Backcountry touring and other off-piste activities call for experience in the assessment of avalanche danger. Below approximately 2400 m: On steep east, south and west facing slopes gliding avalanches are possible. In addition as the day progresses on south facing slopes, moist snow slides and avalanches are possible." }, { "regions": [ { "regionID": "CH-5212" }, { "regionID": "CH-5211" }, { "regionID": "CH-5112" }, { "regionID": "CH-5121" }, { "regionID": "CH-5214" }, { "regionID": "CH-5113" }, { "regionID": "CH-5122" }, { "regionID": "CH-5123" }, { "regionID": "CH-5111" }, { "regionID": "CH-5124" }, { "regionID": "CH-7113" }, { "regionID": "CH-5216" }, { "regionID": "CH-5215" }, { "regionID": "CH-7114" }, { "regionID": "CH-7115" }, { "regionID": "CH-7231" }, { "regionID": "CH-7126" }, { "regionID": "CH-7125" }, { "regionID": "CH-7124" }, { "regionID": "CH-7123" }, { "regionID": "CH-7122" }, { "regionID": "CH-7121" }, { "regionID": "CH-5222" }, { "regionID": "CH-5223" }, { "regionID": "CH-5233" }, { "regionID": "CH-5234" }, { "regionID": "CH-5231" }, { "regionID": "CH-5232" }, { "regionID": "CH-5221" } ], "validTime": { "startTime": "2021-03-23T08:00:00+01:00", "endTime": "2021-03-23T17:00:00+01:00" }, "source": {}, "dangerRatings": [ { "elevation": { "lowerBound": "2200" }, "customData": [], "mainValue": "considerable", "aspect": [ "N", "NE", "E", "SE", "S", "SW", "W", "NW" ] } ], "avalancheProblems": [], "tendency": { "validTime": {}, "tendencyComment": "On each of the two days it will be sunny. On Thursday, high-altitude cloudbanks will pass over during the day and convective cloud will build up. The zero degree level will rise to approximately 2000 m, and a little higher in the west on Wednesday. At elevated altitudes the wind will be light to moderate, initially from the north, then from the west. \n The danger of dry avalanches will decrease slowly. The danger of wet snow and gliding avalanches will vary slightly during the day." }, "publicationTime": "2021-03-23T08:00:00+01:00", "avalancheActivityHighlights": "Considerable avalanche danger will be encountered over a wide area", "snowpackStructureComment": "The strong wind from northerly directions has transported large quantities of the loosely bonded snow that was lying in many locations. At high altitudes in particular, sometimes large snow drift accumulations have formed; these can be released easily. As the strong wind eases during Monday night, the period of snow transport will end. \n Last week\u2019s fresh snow and wind slab layers are lying on a weak layer close to the old snow surface. On the northern flank of the Alps this weak layer is embedded deep and no longer likely to release avalanches. In Valais and Grisons, it is nearer the surface and prone to fracturing on north and east facing slopes in particular, but also on west facing slopes in some instances. In this transitional boundary between layers, several avalanches, in some cases dangerously large ones, have been triggered by people in recent days. In particular in places with shallow snow cover, individual avalanches have penetrated near-ground layers of old snow in their track.", "wxSynopsisComment": "Sunday night in the north was predominantly very cloudy with light snowfall in the east in particular. The south was mostly clear. During the day it became increasingly sunny from the west, including at high altitudes as the upper cloud limit dropped. The south was mostly sunny. \nFresh snow: From Sunday afternoon until Monday afternoon down to low altitudes: - Pr\u00e4ttigau: 5 to 10 cm\n - Central and eastern parts of the northern flank of the Alps, rest of northern and central Grisons: up to 5 cm\n - Elsewhere: smaller amounts or none\n \n \nTemperature: At midday at 2000 m: between -2 \u00b0C in southern Valais and western Ticino, and -6 \u00b0C in the east \nWind: - Jura, western Prealps: moderate bise\n - Otherwise at elevated altitudes, moderate to strong northeasterly, occasionally storm force on the northern Alpine ridge and the main Alpine ridge\nOn Monday night the amount of cloud will continue to decrease, including in the northeast. During the day it will be mostly sunny in Valais, and predominantly sunny in the east and south. \nFresh snow: - \nTemperature: Increasing; at midday at 2000 m: between 0 \u00b0C in the west, -3 \u00b0C in the south and -5 \u00b0C in the east \nWind: From northerly directions - Easing during the night\n - Light to moderate during the day", "bulletinID": "8948220", "avalancheActivityComment": "Avalanches can be released in near-surface layers and reach dangerously large size. This applies in particular on steep west, north and east facing slopes. Remotely triggered avalanches are possible. Whumpfing sounds can indicate the danger. \n In the last three days avalanche prone wind slabs formed in particular at elevated altitudes. These avalanche prone locations are to be found in all aspects. Avalanches can reach medium size. \n Single winter sport participants can release avalanches. Backcountry touring and other off-piste activities call for experience in the assessment of avalanche danger. On steep east, south and west facing slopes gliding avalanches are possible, in particular below approximately 2000 m." }, { "regions": [ { "regionID": "CH-3224" }, { "regionID": "CH-2124" }, { "regionID": "CH-2134" }, { "regionID": "CH-3211" }, { "regionID": "CH-2133" }, { "regionID": "CH-2132" }, { "regionID": "CH-2131" }, { "regionID": "CH-3221" }, { "regionID": "CH-2112" }, { "regionID": "CH-2121" }, { "regionID": "CH-2111" }, { "regionID": "CH-3223" }, { "regionID": "CH-2123" }, { "regionID": "CH-3222" }, { "regionID": "CH-2122" }, { "regionID": "CH-3112" }, { "regionID": "CH-2212" }, { "regionID": "CH-3113" }, { "regionID": "CH-3111" }, { "regionID": "CH-3114" }, { "regionID": "CH-2211" }, { "regionID": "CH-3311" } ], "validTime": { "startTime": "2021-03-23T08:00:00+01:00", "endTime": "2021-03-23T17:00:00+01:00" }, "source": {}, "dangerRatings": [ { "elevation": { "lowerBound": "1800" }, "customData": [], "mainValue": "moderate", "aspect": [ "N", "NE", "E", "SE", "S", "SW", "W", "NW" ] } ], "avalancheProblems": [], "tendency": { "validTime": {}, "tendencyComment": "On each of the two days it will be sunny. On Thursday, high-altitude cloudbanks will pass over during the day and convective cloud will build up. The zero degree level will rise to approximately 2000 m, and a little higher in the west on Wednesday. At elevated altitudes the wind will be light to moderate, initially from the north, then from the west. \n The danger of dry avalanches will decrease slowly. The danger of wet snow and gliding avalanches will vary slightly during the day." }, "publicationTime": "2021-03-23T08:00:00+01:00", "avalancheActivityHighlights": "Considerable avalanche danger will be encountered over a wide area", "snowpackStructureComment": "The strong wind from northerly directions has transported large quantities of the loosely bonded snow that was lying in many locations. At high altitudes in particular, sometimes large snow drift accumulations have formed; these can be released easily. As the strong wind eases during Monday night, the period of snow transport will end. \n Last week\u2019s fresh snow and wind slab layers are lying on a weak layer close to the old snow surface. On the northern flank of the Alps this weak layer is embedded deep and no longer likely to release avalanches. In Valais and Grisons, it is nearer the surface and prone to fracturing on north and east facing slopes in particular, but also on west facing slopes in some instances. In this transitional boundary between layers, several avalanches, in some cases dangerously large ones, have been triggered by people in recent days. In particular in places with shallow snow cover, individual avalanches have penetrated near-ground layers of old snow in their track.", "wxSynopsisComment": "Sunday night in the north was predominantly very cloudy with light snowfall in the east in particular. The south was mostly clear. During the day it became increasingly sunny from the west, including at high altitudes as the upper cloud limit dropped. The south was mostly sunny. \nFresh snow: From Sunday afternoon until Monday afternoon down to low altitudes: - Pr\u00e4ttigau: 5 to 10 cm\n - Central and eastern parts of the northern flank of the Alps, rest of northern and central Grisons: up to 5 cm\n - Elsewhere: smaller amounts or none\n \n \nTemperature: At midday at 2000 m: between -2 \u00b0C in southern Valais and western Ticino, and -6 \u00b0C in the east \nWind: - Jura, western Prealps: moderate bise\n - Otherwise at elevated altitudes, moderate to strong northeasterly, occasionally storm force on the northern Alpine ridge and the main Alpine ridge\nOn Monday night the amount of cloud will continue to decrease, including in the northeast. During the day it will be mostly sunny in Valais, and predominantly sunny in the east and south. \nFresh snow: - \nTemperature: Increasing; at midday at 2000 m: between 0 \u00b0C in the west, -3 \u00b0C in the south and -5 \u00b0C in the east \nWind: From northerly directions - Easing during the night\n - Light to moderate during the day", "bulletinID": "8948223", "avalancheActivityComment": "As a consequence of northeasterly wind, avalanche prone wind slabs formed in the last three days. They are to be found in particular in gullies and bowls, and behind abrupt changes in the terrain. At elevated altitudes the prevalence and size of these avalanche prone locations will increase. Careful route selection is required. The wind slabs are to be bypassed in particular in steep terrain. On steep east, south and west facing slopes gliding avalanches are possible, in particular below approximately 2000 m." }, { "regions": [ { "regionID": "CH-6113" }, { "regionID": "CH-6114" }, { "regionID": "CH-6211" }, { "regionID": "CH-6115" }, { "regionID": "CH-6111" }, { "regionID": "CH-6112" } ], "validTime": { "startTime": "2021-03-23T08:00:00+01:00", "endTime": "2021-03-23T17:00:00+01:00" }, "source": {}, "dangerRatings": [ { "elevation": { "lowerBound": "2200" }, "customData": [], "mainValue": "considerable", "aspect": [ "N", "NE", "E", "SE", "S", "SW", "W", "NW" ] } ], "avalancheProblems": [], "tendency": { "validTime": {}, "tendencyComment": "On each of the two days it will be sunny. On Thursday, high-altitude cloudbanks will pass over during the day and convective cloud will build up. The zero degree level will rise to approximately 2000 m, and a little higher in the west on Wednesday. At elevated altitudes the wind will be light to moderate, initially from the north, then from the west. \n The danger of dry avalanches will decrease slowly. The danger of wet snow and gliding avalanches will vary slightly during the day." }, "publicationTime": "2021-03-23T08:00:00+01:00", "avalancheActivityHighlights": "Considerable avalanche danger will be encountered over a wide area", "snowpackStructureComment": "The strong wind from northerly directions has transported large quantities of the loosely bonded snow that was lying in many locations. At high altitudes in particular, sometimes large snow drift accumulations have formed; these can be released easily. As the strong wind eases during Monday night, the period of snow transport will end. \n Last week\u2019s fresh snow and wind slab layers are lying on a weak layer close to the old snow surface. On the northern flank of the Alps this weak layer is embedded deep and no longer likely to release avalanches. In Valais and Grisons, it is nearer the surface and prone to fracturing on north and east facing slopes in particular, but also on west facing slopes in some instances. In this transitional boundary between layers, several avalanches, in some cases dangerously large ones, have been triggered by people in recent days. In particular in places with shallow snow cover, individual avalanches have penetrated near-ground layers of old snow in their track.", "wxSynopsisComment": "Sunday night in the north was predominantly very cloudy with light snowfall in the east in particular. The south was mostly clear. During the day it became increasingly sunny from the west, including at high altitudes as the upper cloud limit dropped. The south was mostly sunny. \nFresh snow: From Sunday afternoon until Monday afternoon down to low altitudes: - Pr\u00e4ttigau: 5 to 10 cm\n - Central and eastern parts of the northern flank of the Alps, rest of northern and central Grisons: up to 5 cm\n - Elsewhere: smaller amounts or none\n \n \nTemperature: At midday at 2000 m: between -2 \u00b0C in southern Valais and western Ticino, and -6 \u00b0C in the east \nWind: - Jura, western Prealps: moderate bise\n - Otherwise at elevated altitudes, moderate to strong northeasterly, occasionally storm force on the northern Alpine ridge and the main Alpine ridge\nOn Monday night the amount of cloud will continue to decrease, including in the northeast. During the day it will be mostly sunny in Valais, and predominantly sunny in the east and south. \nFresh snow: - \nTemperature: Increasing; at midday at 2000 m: between 0 \u00b0C in the west, -3 \u00b0C in the south and -5 \u00b0C in the east \nWind: From northerly directions - Easing during the night\n - Light to moderate during the day", "bulletinID": "8948225", "avalancheActivityComment": "As a consequence of northeasterly wind, avalanche prone wind slabs formed in the last three days. These can be released by a single winter sport participant. Avalanches can reach medium size. The wind slabs are to be avoided. Backcountry touring calls for experience in the assessment of avalanche danger." } ]