The danger of moist and wet avalanches will already be elevated in the early morning.
The danger of moist and wet avalanches will already be elevated in the early morning. As the day progresses as a consequence of warming during the day and solar radiation there will be an additional increase in the danger. Avalanches can penetrate deep layers and reach large size. This applies in all aspects below approximately 2400 m, as well as on very steep sunny slopes below approximately 2800 m.
Avalanche prone locations for dry avalanches are to be found on very steep shady slopes above approximately 2400 m. The avalanche prone locations are difficult to recognise. Especially transitions from a shallow to a deep snowpack are unfavourable.
In addition the fresh wind slabs in high Alpine regions are prone to triggering in some cases, especially adjacent to ridgelines. These are mostly small.
Snowpack
dp.10: springtime scenario dp.1: deep persistent weak layer
Outgoing longwave radiation during the night will be reduced. The surface of the snowpack will freeze very little. Sunshine and high temperatures will give rise from early morning to rapid softening of the snowpack. The snowpack will become increasingly wet all the way through. This applies in all aspects below approximately 2400 m, as well as on sunny slopes at elevated altitudes.
Isolated avalanche prone weak layers exist in the top section of the old snowpack. Towards its base, the snowpack consists of faceted crystals. This applies in particular on west, north and east facing slopes at high altitude, as well as in all aspects in high Alpine regions.
Tendency
Increase in danger of moist and wet avalanches as a consequence of warming during the day and solar radiation.
EARLIER Danger level
2400m
Avalanche Problem
Wet snow
2400m
Persistent weak layer
2400m
LATER Danger level
2800m
Avalanche Problem
Wet snow
2800m
Persistent weak layer
2400m
The danger of moist and wet avalanches will already increase in the early morning.
The danger of moist and wet avalanches will already exist in the early morning. This applies in all aspects below approximately 2400 m. As a consequence of warming during the day and the solar radiation, the likelihood of avalanches being released will increase especially on very steep sunny slopes below approximately 2800 m. Avalanches can in isolated cases penetrate near-ground layers of the snowpack and reach medium size.
Individual avalanche prone locations for dry avalanches are to be found in particular on very steep west, north and east facing slopes above approximately 2400 m. These places are difficult to recognise. Especially transitions from a shallow to a deep snowpack are unfavourable. Avalanches can reach medium size.
In addition the fresh wind slabs in high Alpine regions are prone to triggering in some cases, especially adjacent to ridgelines. These are mostly small.
Snowpack
dp.10: springtime scenario dp.1: deep persistent weak layer
Outgoing longwave radiation during the night will be reduced. The surface of the snowpack will only just freeze and will soften quickly. The snowpack will become increasingly wet all the way through. This applies in all aspects below approximately 2400 m, and on sunny slopes at elevated altitudes.
Isolated avalanche prone weak layers exist in the top section of the old snowpack. Towards its base, the snowpack consists of faceted crystals. This applies in particular on west, north and east facing slopes at high altitudes and in high Alpine regions.
Tendency
Increase in danger of moist and wet avalanches as a consequence of warming during the day and solar radiation.
EARLIER Danger level
2400m
Avalanche Problem
Wet snow
2400m
LATER Danger level
2800m
Avalanche Problem
Wet snow
2800m
Wet snow represents the main danger. Increase in avalanche danger in the late morning.
The danger of moist and wet avalanches will already exist in the early morning. This applies in all aspects below approximately 2400 m. As a consequence of warming during the day and the solar radiation, the likelihood of avalanches being released will increase especially on very steep sunny slopes below approximately 2800 m. Avalanches can in isolated cases penetrate near-ground layers of the snowpack and reach medium size.
In very isolated cases dry avalanches can also be released in the old snowpack. Avalanche prone locations are to be found in particular on very steep shady slopes above approximately 2400 m.
Snowpack
dp.10: springtime scenario dp.1: deep persistent weak layer
Outgoing longwave radiation during the night will be reduced at times. The surface of the snowpack will freeze very little and will soften quickly. The weather conditions will give rise to increasing and thorough wetting of the snowpack.
Faceted weak layers exist in the bottom section of the old snowpack, especially on steep west, north and east facing slopes above approximately 2400 m.
Tendency
Increase in danger of moist and wet avalanches as a consequence of warming during the day and solar radiation.
EARLIER Danger level
LATER Danger level
Avalanche Problem
Wet snow
As the day progresses the likelihood of wet avalanches being released will increase a little.
As a consequence of warming during the day, the likelihood of wet avalanches being released will increase. This applies in all aspects. Avalanches are rather small but can be released also by a single winter sport participant.
Restraint should be exercised because avalanches can sweep people along and give rise to falls.
Snowpack
dp.10: springtime scenario dp.1: deep persistent weak layer
Outgoing longwave radiation during the night will be reduced in some places. The surface of the snowpack will freeze very little and will soften quickly. Sunshine and high temperatures gave rise to increasing and thorough wetting of the snowpack.
Tendency
As the day progresses the likelihood of wet avalanches being released will increase a little.
