Even single freeriders can release avalanches easily. As a consequence of warming, the natural activity of wet avalanches will appreciably increase.
As a consequence of new snow and warming a dangerous avalanche situation will persist.
Large quantities of fresh snow and the wind-drifted snow are lying on top of a weakly bonded old snowpack. As a consequence of warming during the day and solar radiation wet avalanches are to be expected as the day progresses. Areas close to the tree line as well as above the tree line: Winter sport participants can release avalanches easily. Avalanches can in some cases penetrate deep layers and reach large size, in particular on west, north and east facing slopes. The avalanche prone locations are numerous. Individual avalanche prone locations are to be found also on southeast, south and southwest facing slopes above approximately 2600 m. Caution is to be exercised in particular in little used terrain, as well as at transitions from a shallow to a deep snowpack, when entering gullies and bowls for example. Remotely triggered avalanches are possible.
As a consequence of warming during the day and solar radiation loose snow avalanches are to be expected as the day progresses. This applies in particular on steep sunny slopes. In particular on steep, rather lightly snow-covered east and west facing slopes the wet avalanches can penetrate even deep layers and reach large size in isolated cases.
In addition gliding avalanches are possible. This applies especially on cut and grassy slopes below approximately 2000 m.
Snowpack
dp.7: snow-poor zones in snow-rich surrounding dp.10: springtime scenario
Tuesday: More snow than expected has fallen. This applies in particular in the Allgäu Alps and in the Central Lechtal Alps. 20 to 30 cm of snow, and even more in some localities, has fallen above approximately 2000 m. Up to 2000 m rain has fallen. The wind was strong to storm force in some cases. On Wednesday it will be exceptionally warm.
The snowpack remains prone to triggering. Large quantities of fresh snow and the wind-drifted snow of the last few days are bonding only slowly with the old snowpack. The various wind slabs have bonded insufficiently with each other and the old snowpack. Avalanche prone weak layers exist in the bottom section of the snowpack on west, north and east facing slopes.
The rain gave rise to increasing and thorough wetting of the snowpack at low and intermediate altitudes.
Tendency
As a consequence of warming and solar radiation, the activity of wet avalanches will increase.
Danger level
treeline
Avalanche Problem
Persistent weak layer
Treeline
Wind slab
Treeline
Wet snow
2200m
Even single freeriders can release avalanches easily. As a consequence of warming, the natural activity of wet avalanches will appreciably increase.
As a consequence of new snow and warming a dangerous avalanche situation will persist.
As a consequence of new snow and a strong to storm force northwesterly wind, further wind slabs formed in gullies and bowls and behind abrupt changes in the terrain. The new snow and wind slabs of the last few days are lying on top of a weakly bonded old snowpack. This applies on west, north and east facing slopes. The avalanche prone locations are numerous, especially in areas close to the tree line, as well as above the tree line. Winter sport participants can release avalanches easily, including large ones. Remotely triggered avalanches are possible.
As a consequence of warming during the day and solar radiation loose snow avalanches are to be expected as the day progresses. This applies in particular on steep sunny slopes. In particular on steep, rather lightly snow-covered east and west facing slopes the wet avalanches can penetrate even deep layers and reach large size in isolated cases.
In addition gliding avalanches are possible. This applies especially on cut and grassy slopes below approximately 2000 m.
Snowpack
dp.1: deep persistent weak layer dp.10: springtime scenario
15 to 30 cm of snow, and even more in some localities, fell on Tuesday. The wind was strong to storm force in some cases. The wind has transported the new snow significantly. Further wind slabs formed. On Wednesday it will be very mild.
The snowpack will be prone to triggering over a wide area. The new snow and wind slabs are lying on top of a weakly bonded old snowpack. Distinct weak layers exist in the bottom section of the old snowpack. This applies in particular on west, north and east facing slopes in areas close to the tree line, and above the tree line.
The rain gave rise to thorough wetting of the snowpack at low and intermediate altitudes.
Tendency
As a consequence of warming and solar radiation, the activity of wet avalanches will increase.
Danger level
treeline
Avalanche Problem
Persistent weak layer
Treeline
Wind slab
Treeline
Wet snow
2200m
Even single freeriders can release avalanches easily. As a consequence of warming, the natural activity of wet avalanches will appreciably increase.
As a consequence of new snow and warming a dangerous avalanche situation will persist.
Large quantities of fresh snow and the wind-drifted snow are lying on top of a weakly bonded old snowpack. As a consequence of new snow and a storm force wind, further wind slabs formed. The avalanche prone locations are numerous, especially on steep shady slopes in areas close to the tree line, as well as above the tree line. Even single winter sport participants can release avalanches easily.
As a consequence of warming during the day and solar radiation loose snow avalanches are to be expected as the day progresses. This applies in particular on steep sunny slopes.
In addition gliding avalanches are possible. This applies especially on cut and grassy slopes.
Snowpack
dp.1: deep persistent weak layer dp.10: springtime scenario
40 to 60 cm of snow, and even more in some localities, fell on Tuesday. The wind was strong to storm force in some cases.
The wind has transported some snow. Further wind slabs formed.
The snowpack will be prone to triggering over a wide area. The new snow and wind slabs are lying on top of a weakly bonded old snowpack. Somewhat older wind slabs are lying on surface hoar. Distinct weak layers exist in the bottom section of the old snowpack. This applies in particular on west, north and east facing slopes above the tree line. The rain gave rise to extreme and thorough wetting of the snowpack at low altitude.
Tendency
As a consequence of warming and solar radiation, the activity of wet avalanches will increase.
Danger level
1800m
Avalanche Problem
Persistent weak layer
1800m
Wind slab
2400m
Wet snow
2400m
A precarious avalanche situation will be encountered in some regions. Weakly bonded old snow requires caution. In addition the danger of wet avalanches will increase.
Wind slabs are prone to triggering in particular on west, north and east facing slopes above approximately 2400 m. This also applies on south facing slopes at elevated altitudes. Avalanches can in many cases be released in near-surface layers of the snowpack. These can also penetrate near-ground layers of the snowpack and reach large size on west, north and east facing slopes. As a consequence of warming individual natural avalanches are possible. The runout zones are to be avoided. Remotely triggered avalanches are possible.
In addition an appreciable danger of loose snow avalanches exists.
In the regions neighbouring those that are subject to danger level 4 (high) the avalanche prone locations are larger.
As a consequence of warming during the day and solar radiation small and medium-sized wet avalanches are to be expected. This applies in particular on very steep sunny slopes below approximately 2400 m, as well as at the base of rock walls. In addition a latent danger of gliding avalanches exists. This applies in particular on cut and grassy slopes.
Snowpack
dp.1: deep persistent weak layer dp.10: springtime scenario
In some regions 10 cm of snow, and even more in some localities, has fallen above approximately 2000 m. As a consequence of new snow and strong wind the wind slabs have increased in size additionally. Somewhat older wind slabs are lying on surface hoar in some places. Distinct weak layers exist in the old snowpack in particular on west, north and east facing slopes. Avalanches triggered by explosives and natural avalanches have confirmed the existence of a weak snowack.
Outgoing longwave radiation during the night will be reduced at times. The weather conditions as the day progresses will give rise to thorough wetting of the snowpack. This applies especially on very steep sunny slopes below approximately 2400 m.
Tendency
The snowpack remains prone to triggering. The activity of wet avalanches will appreciably increase.
Danger level
treeline
Avalanche Problem
Persistent weak layer
Treeline
Wind slab
2000m
Wet snow
2400m
Backcountry touring and other off-piste activities call for great restraint.
Wind slabs and weakly bonded old snow require caution. Very steep sunny slopes: Increase in danger of wet avalanches as a consequence of warming.
The northwesterly wind has transported the fresh and old snow significantly. In particular at high altitude avalanche prone wind slabs formed, especially adjacent to ridgelines and in pass areas in all altitude zones, as well as in gullies and bowls, and behind abrupt changes in the terrain at elevated altitudes. On very steep sunny slopes medium-sized natural avalanches must be expected. In some places the avalanches can penetrate down to the ground and reach large size. Mostly the dry avalanches are medium-sized and can be released by a single winter sport participant. Remotely triggered avalanches are possible. Whumpfing sounds and the formation of shooting cracks when stepping on the snowpack serve as an alarm indicating the danger. The avalanche prone locations are prevalent and are barely recognisable, even to the trained eye. Backcountry touring calls for meticulous route selection.
Snowpack
dp.1: deep persistent weak layer dp.6: cold, loose snow and wind
The new snow and wind slabs of last week are lying on top of a weakly bonded old snowpack in particular on steep shady slopes above the tree line. Distinct weak layers exist in the bottom section of the old snowpack. The meteorological conditions will foster a gradual weakening of the snowpack on sunny slopes. The snowpack remains unstable over a wide area, especially adjacent to ridgelines and in pass areas in all altitude zones, as well as in gullies and bowls, and behind abrupt changes in the terrain at elevated altitudes.
Tendency
The snowpack remains prone to triggering over a wide area. The avalanche danger will persist. The activity of wet avalanches will gradually increase.
Danger level
1800m
Avalanche Problem
Persistent weak layer
1800m
Wind slab
2400m
Wet snow
Weakly bonded old snow requires caution. In particular, however, the danger of wet avalanches will increase.
Avalanches can be released in the old snowpack and reach large size in isolated cases on west, north and east facing slopes. This applies in case of a single winter sport participant. The avalanche prone locations are to be found in particular above approximately 1800 m. In their paths avalanches can entrain the wet snow. This extends the avalanche runout distances.
The fresh wind slabs are prone to triggering in particular on steep west, north and east facing slopes at elevated altitudes.
As a consequence of warming during the day and solar radiation small and medium-sized wet avalanches are to be expected. This applies in particular on very steep sunny slopes, and at the base of rock walls. The runout zones are to be treated with caution.
Snowpack
dp.1: deep persistent weak layer dp.10: springtime scenario
Distinct weak layers exist in the old snowpack in particular on west, north and east facing slopes.
Outgoing longwave radiation during the night will be good at times. The weather conditions as the day progresses will give rise to thorough wetting of the snowpack. This applies especially on very steep sunny slopes below approximately 2400 m.
Tendency
As a consequence of warming and solar radiation, the activity of wet avalanches will appreciably increase.
Danger level
1800m
Avalanche Problem
Persistent weak layer
1800m
Wet snow
Weakly bonded old snow requires caution. In particular, however, the danger of wet avalanches will increase.
Avalanches can be released in the old snowpack and reach large size in isolated cases on west, north and east facing slopes. This applies in case of a single winter sport participant. The avalanche prone locations are to be found in particular above approximately 1800 m. In their paths avalanches can entrain the wet snow. This extends the avalanche runout distances.
As a consequence of warming during the day and solar radiation small and medium-sized wet avalanches are to be expected. This applies in particular on very steep sunny slopes, and at the base of rock walls. The runout zones are to be treated with caution.
Snowpack
dp.1: deep persistent weak layer dp.10: springtime scenario
Distinct weak layers exist in the old snowpack in particular on west, north and east facing slopes.
Outgoing longwave radiation during the night will be good at times. The weather conditions as the day progresses will give rise to thorough wetting of the snowpack. This applies especially on very steep sunny slopes below approximately 2400 m.
Tendency
As a consequence of warming and solar radiation, the activity of wet avalanches will appreciably increase.
Danger level
treeline
Avalanche Problem
Persistent weak layer
Treeline
Wind slab
2000m
Wet snow
Wind slabs are to be evaluated with care and prudence. Weak layers in the old snowpack can be released in isolated cases.
Weak layers in the old snowpack can be released in isolated cases by individual winter sport participants especially in little used terrain. Caution is to be exercised in particular on steep west, north and east facing slopes above the tree line. The avalanche prone locations are difficult to recognise. Mostly avalanches are medium-sized.
In addition the wind slabs in gullies and bowls, and behind abrupt changes in the terrain are prone to triggering in some cases still. Such avalanche prone locations are to be found on north, east and southeast facing slopes above the tree line.
As a consequence of warming during the day and solar radiation small and medium-sized wet avalanches are possible. This applies in particular on very steep sunny slopes below approximately 2200 m. Restraint is advisable.
Snowpack
dp.1: deep persistent weak layer dp.6: cold, loose snow and wind
The sometimes storm force wind has transported some snow. Sometimes avalanche prone wind slabs formed.
The snowpack will be in some cases prone to triggering. The new snow and wind slabs are lying on top of a weakly bonded old snowpack. This applies in particular on west, north and east facing slopes above the tree line. The meteorological conditions will foster a gradual weakening of the snowpack on sunny slopes.
Tendency
Weak layers in the old snowpack represent the main danger.
Danger level
treeline
Avalanche Problem
Persistent weak layer
Treeline
Wet snow
Weak layers in the old snowpack can be released in isolated cases.
Avalanches can in isolated cases be released in the old snowpack and reach medium size on west, north and east facing slopes. This applies in case of a single winter sport participant. In their paths avalanches can entrain the wet snow.
As a consequence of warming during the day and solar radiation individual small and medium-sized wet avalanches are to be expected.
Snowpack
dp.1: deep persistent weak layer dp.10: springtime scenario
Distinct weak layers exist in the old snowpack in particular on west, north and east facing slopes.
Outgoing longwave radiation during the night will be quite good over a wide area. The weather conditions as the day progresses will give rise to thorough wetting of the snowpack.
