{ "bulletins": [ { "regions": [ { "regionID": "GB-SCT-2" } ], "validTime": { "startTime": "2022-01-06T18:00:00", "endTime": "2022-01-07T18:00:00" }, "source": {}, "dangerRatings": [ { "elevation": { "lowerBound": "800" }, "customData": [], "mainValue": "moderate", "aspect": [ "SE", "W" ] }, { "elevation": { "lowerBound": "800" }, "customData": [], "mainValue": "low", "aspect": [ "S", "SW" ] }, { "elevation": { "lowerBound": "800" }, "customData": [], "mainValue": "considerable", "aspect": [ "N", "NE", "E", "NW" ] }, { "elevation": { "upperBound": "800" }, "customData": [], "mainValue": "moderate", "aspect": [ "N", "NE", "NW" ] }, { "elevation": { "upperBound": "800" }, "customData": [], "mainValue": "low", "aspect": [ "E", "SE", "S", "SW", "W" ] } ], "avalancheProblems": [ { "dangerRating": { "elevation": {}, "customData": [] }, "problemType": "wind_drifted_snow" }, { "dangerRating": { "elevation": {}, "customData": [] }, "problemType": "cornice_failure" } ], "tendency": { "validTime": {} }, "bulletinID": "GB-SCT-9878", "publicationTime": "2022-01-06T00:00:00", "avalancheActivityHighlights": "NC for 7/1, Unstable windslab on W,NW,N,NE,E and SE above 800m, more localised at lower levels above 550m, cornices, hazard cons.", "avalancheActivityComment": "Forecast Snow Stability: Unstable windslab will continue to develop in wind sheltered locations such as coire rims, gullies and crag aprons with greatest accumulations on North-West through North to East aspects above 800 metres, West and South-East aspects will also be affected due to cross loading. Fragile cornices will be present above these aspects. Localised instabilities will also be present on steep banks and gullies at lower elevations and above 550 metres. The avalanche hazard will be Considerable.", "snowpackStructureComment": "Forecast Weather Influences: Overnight showers will clear to give a cloudy dry day. The freezing level will drop from 750 metres to around 200 metres by the morning. Moderate to strong West-South-Westerly winds will veer Westerly during the morning. \nObserved Weather Influences: Storm force winds with snow showers for most of the day. The freezing level rose to 600 metres by the end of the afternoon.\nObservedSnowStability: Fresh unstable windslab is forming and gaining depth in wind sheltered locations, mainly on North-West to North-East aspects above 800 metres. More localised acculumulations are present on steep banks and gullies at lower elevations and above 550 metres. Other aspects are affected due to cross loading. Windslab is being eroded from slopes exposed to the strong southerly winds. The avalanche hazard is Considerable." }, { "regions": [ { "regionID": "GB-SCT-4" } ], "validTime": { "startTime": "2022-01-06T18:00:00", "endTime": "2022-01-07T18:00:00" }, "source": {}, "dangerRatings": [ { "elevation": { "lowerBound": "800" }, "customData": [], "mainValue": "moderate", "aspect": [ "SE", "NW" ] }, { "elevation": { "lowerBound": "800" }, "customData": [], "mainValue": "low", "aspect": [ "S", "SW", "W" ] }, { "elevation": { "lowerBound": "800" }, "customData": [], "mainValue": "considerable", "aspect": [ "N", "NE", "E" ] }, { "elevation": { "upperBound": "800" }, "customData": [], "mainValue": "low", "aspect": [ "N", "NE", "E", "SE", "S", "SW", "W", "NW" ] } ], "avalancheProblems": [ { "dangerRating": { "elevation": {}, "customData": [] }, "problemType": "wind_drifted_snow" }, { "dangerRating": { "elevation": {}, "customData": [] }, "problemType": "cornice_failure" } ], "tendency": { "validTime": {} }, "bulletinID": "GB-SCT-9879", "publicationTime": "2022-01-06T00:00:00", "avalancheActivityHighlights": "GC7/1 New snow wsw\\'ly strong unstable windslab gullies+NW-N-SE slopes 800m+ cornices fragile avalanches likely Hazard Considerable", "avalancheActivityComment": "Forecast Snow Stability: New snow and wind transport of existing deposits will form weakly bonded windslab in sheltered locations such as summit gullies and on North-West through North to South-Easterly aspects mainly above 800 metres where avalanches are likely. Fresh cornices will be fragile. The avalanche hazard will be Considerable.", "snowpackStructureComment": "Forecast Weather Influences: Frequent snow showers will affect the area for much of the period. Winds will be strong to gale force mainly West South Westerly. The freezing level will be around 400 metres.\nObserved Weather Influences: New snow above 400 metres and strong to gale force South-South-Westerly winds have affected the area.\nObservedSnowStability: New snow and wind transport of existing deposits have formed areas of unstable windslab in sheltered gullies and on slopes with a North-West To North-East aspect mainly above 850 metres. Fresh cornices are fragile. The avalanche hazard is Moderate." }, { "regions": [ { "regionID": "GB-SCT-3" } ], "validTime": { "startTime": "2022-01-06T18:00:00", "endTime": "2022-01-07T18:00:00" }, "source": {}, "dangerRatings": [ { "elevation": { "lowerBound": "900" }, "customData": [], "mainValue": "moderate", "aspect": [ "SE", "NW" ] }, { "elevation": { "lowerBound": "900" }, "customData": [], "mainValue": "low", "aspect": [ "S", "SW", "W" ] }, { "elevation": { "lowerBound": "900" }, "customData": [], "mainValue": "considerable", "aspect": [ "N", "NE", "E" ] }, { "elevation": { "upperBound": "900" }, "customData": [], "mainValue": "low", "aspect": [ "N", "NE", "E", "SE", "S", "SW", "W", "NW" ] } ], "avalancheProblems": [ { "dangerRating": { "elevation": {}, "customData": [] }, "problemType": "wind_drifted_snow" }, { "dangerRating": { "elevation": {}, "customData": [] }, "problemType": "cornice_failure" } ], "tendency": { "validTime": {} }, "bulletinID": "GB-SCT-9880", "publicationTime": "2022-01-06T00:00:00", "avalancheActivityHighlights": "LO for 7/1. Unstable windslab forming mainly on sheltered N, NE and E aspects above 900m. Considerable hazard", "avalancheActivityComment": "Forecast Snow Stability: Areas of unstable windslab will continue to form in sheltered locations. Greatest accumulations will mainly be on North, North-East and East aspects above 900m. Cornices will also form above these aspects. The avalanche hazard will be Considerable", "snowpackStructureComment": "Forecast Weather Influences: There will be fresh snow above 400m with moderate to strong South-westerly winds.\nObserved Weather Influences: A stormy day with strong South-Easterly winds and heavy precipitation. The freezing level rose during the day to around 1000m. \nObservedSnowStability: Fresh areas of unstable windslab have developed in sheltered locations. Greatest accumulations are on steep North-West, North and North-East aspects above 1000m. Low level snow is gradually thawing. The avalanche hazard is Considerable. " }, { "regions": [ { "regionID": "GB-SCT-7" } ], "validTime": { "startTime": "2022-01-06T18:00:00", "endTime": "2022-01-07T18:00:00" }, "source": {}, "dangerRatings": [ { "elevation": { "lowerBound": "750" }, "customData": [], "mainValue": "moderate", "aspect": [ "SE", "NW" ] }, { "elevation": { "lowerBound": "750" }, "customData": [], "mainValue": "low", "aspect": [ "S", "SW", "W" ] }, { "elevation": { "lowerBound": "750" }, "customData": [], "mainValue": "considerable", "aspect": [ "N", "NE", "E" ] }, { "elevation": { "upperBound": "750" }, "customData": [], "mainValue": "moderate", "aspect": [ "N", "NE", "E" ] }, { "elevation": { "upperBound": "750" }, "customData": [], "mainValue": "low", "aspect": [ "SE", "S", "SW", "W", "NW" ] } ], "avalancheProblems": [ { "dangerRating": { "elevation": {}, "customData": [] }, "problemType": "wind_drifted_snow" }, { "dangerRating": { "elevation": {}, "customData": [] }, "problemType": "persistent_weak_layers" }, { "dangerRating": { "elevation": {}, "customData": [] }, "problemType": "cornice_failure" } ], "tendency": { "validTime": {} }, "bulletinID": "GB-SCT-9881", "publicationTime": "2022-01-06T00:00:00", "avalancheActivityHighlights": "TO for 07. 01. Windslab instabilities, cornices developing on NW through N to NE aspects above 750m. Avalanche Hazard Considerable.", "avalancheActivityComment": "Forecast Snow Stability: There will be drifting in the strong winds. This redistributed and fresh snow will build areas of unstable windslab, especially where it gains depth in steep locations , on North-West through North to East aspects above 750 metres. Cornices will develop on the same aspects. Wind exposed aspects will scour and the snowpack on these slopes will become firmer although some previous cross loading instabilities will linger. The avalanche hazard will be Considerable", "snowpackStructureComment": "Forecast Weather Influences: There will be strong West-South-West winds with heavy snow throughout the period. The freezing level will lower from 500 meters this evening to around 380 metres.\nObserved Weather Influences: There were generally strong-gale Southerly winds with moderate snow showers. At lower levels these showers were falling as rain. The freezing level was around 700m lowering.\nObservedSnowStability: There has been some thawing at lower levels. Above 750 meters wind slab instabilities are beginning to develop on wind sheltered coire rims, gully tops and ridge flanks on West through North to Easterly aspects. Wind exposed slopes are showing some scouring. The avalanche hazard is Moderate." }, { "regions": [ { "regionID": "GB-SCT-6" } ], "validTime": { "startTime": "2022-01-06T18:00:00", "endTime": "2022-01-07T18:00:00" }, "source": {}, "dangerRatings": [ { "elevation": { "lowerBound": "850" }, "customData": [], "mainValue": "moderate", "aspect": [ "SE", "NW" ] }, { "elevation": { "lowerBound": "850" }, "customData": [], "mainValue": "low", "aspect": [ "S", "SW", "W" ] }, { "elevation": { "lowerBound": "850" }, "customData": [], "mainValue": "considerable", "aspect": [ "N", "NE", "E" ] }, { "elevation": { "upperBound": "850" }, "customData": [], "mainValue": "low", "aspect": [ "N", "NE", "E", "SE", "S", "SW", "W", "NW" ] } ], "avalancheProblems": [ { "dangerRating": { "elevation": {}, "customData": [] }, "problemType": "wind_drifted_snow" }, { "dangerRating": { "elevation": {}, "customData": [] }, "problemType": "cornice_failure" } ], "tendency": { "validTime": {} }, "bulletinID": "GB-SCT-9882", "publicationTime": "2022-01-06T00:00:00", "avalancheActivityHighlights": "CM for 7/1/22 Considerable hazard. New snow instabilities, windslab development on N to E aspects above 850m", "avalancheActivityComment": "Forecast Snow Stability: New snow instabilities will exist with unstable windslab development occurring on steep, wind sheltered North to Easterly aspects above 850 metres. In particular on North-Easterly facing places such as gully tops and around coire rims. Additionally some cross-loading on gully flanks of other high sheltered aspects will occur. New developing cornices will be weak around corrie rims on same aspects. The avalanche hazard will be Considerable", "snowpackStructureComment": "Forecast Weather Influences: There will be further frequent snow showers overnight and during the day, these accompanied by moderate to strong West-South-West, then Westerly winds. New snow expected lying from around 200 metres\nObserved Weather Influences: Snow showers have affected the area over the period. The winds have increased during the day moderate to strong Southerly\nObservedSnowStability: Localised new snow instabilities are present on steep, sheltered North-West to North-East facing gullies and around coire rims above 950 metres. Overall cover remains sparse and at lower elevations the new unconsolidated deposits lie on bare ground. Good stability in other locations where many slopes remain wind- scoured. The avalanche hazard is Moderate" }, { "regions": [ { "regionID": "GB-SCT-5" } ], "validTime": { "startTime": "2022-01-06T18:00:00", "endTime": "2022-01-07T18:00:00" }, "source": {}, "dangerRatings": [ { "elevation": { "lowerBound": "800" }, "customData": [], "mainValue": "moderate", "aspect": [ "N", "NE", "E", "SE", "S", "NW" ] }, { "elevation": { "lowerBound": "800" }, "customData": [], "mainValue": "low", "aspect": [ "SW", "W" ] }, { "elevation": { "upperBound": "800" }, "customData": [], "mainValue": "low", "aspect": [ "N", "NE", "E", "SE", "S", "SW", "W", "NW" ] } ], "avalancheProblems": [ { "dangerRating": { "elevation": {}, "customData": [] }, "problemType": "wind_drifted_snow" }, { "dangerRating": { "elevation": {}, "customData": [] }, "problemType": "cornice_failure" } ], "tendency": { "validTime": {} }, "bulletinID": "GB-SCT-9883", "publicationTime": "2022-01-06T00:00:00", "avalancheActivityHighlights": "SC 07.01.22 Unstable windslab developing N through E to S aspects above 800m. Fragile cornices forming. Ava haz Moderate.", "avalancheActivityComment": "Forecast Snow Stability: Unstable windslab will continue to develop with steep wind sheltered features on mainly North through East to South aspects above 800 metres most affected. Unstable cornices will also form above these aspects. Isolated pockets of unstable snow may be encountered elsewhere and at lower levels. Areas exposed to the strong winds will be scoured with old snow firm and icy. The avalanche hazard will be Moderate.", "snowpackStructureComment": "Forecast Weather Influences: Remaining cold with new snowfall overnight but expected to be dry during the day. Strong winds throughout the day, generally veering from the South-West to the North-West by the end of the day.\nObserved Weather Influences: Overnight the Northerly winds backed Southerly, gale to storm force in strength. Snow showers, heavy at times throughout the day at all levels.\nObservedSnowStability: Due to significant redistribution of existing deposits and snowfall, rapidly forming unstable windslab is developing in sheltered terrain on North-West through North-East to Easterly aspects above 800m. Any wind sheltered features are affected, many with fragile cornices forming above. Also, isolated instabilities persist on South-East through South-West to West aspects above 900 metres. Deep drifts have formed from low levels with exposed terrain scoured. The avalanche hazard is Moderate." } ] }