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MediumAvalanche danger 3 (considerable)CS: 25 · v5

Avalanche danger 3 (considerable) in Switzerland

SwitzerlandWSL Institute for Snow and Avalanche Research SLF

Right now

Nothing else has been detected within 20 km in the last 24 hours.

Distance and hazards
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Reported by WSL Institute for Snow and Avalanche Research SLF 15 days ago.

It is one of only 3 we have recorded within 20 km of this point since 20 October 2026.

What the source measured

WSL Institute for Snow and Avalanche Research SLF reported: SLF avalanche bulletin: considerable danger (level 3/5) at its highest, across 45 warning regions of the Swiss Alps.

Nearby, since 20 October 2026

How we know

One source: WSL Institute for Snow and Avalanche Research SLF. Not yet confirmed by a second, independent source.

Our own score for this event is 25 out of 100.

This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.

Computed under scoring rules v5. Rows carrying other versions were judged by different rules and are not directly comparable.

Series begins 8 March 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.

This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.

Event data

TypeAvalanche danger 3 (considerable)
SeverityMedium
Calamity Score (ours)25 / 100
Legacy data-support index0.50/1
Coordinates46.6000, 8.3000
Nearest cityKriens (48 km)
Urban exposure index (PEI)0 within 5 km
Impact tierminor
Timestamp2026-10-20T15:00:00.000Z
Sourcehttps://www.slf.ch/en/avalanche-bulletin-and-snow-situation.html
LicenceCC BY 4.0 · WSL Institute for Snow and Avalanche Research SLF

Physical priority index · v5. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.

Source and revision timeline

Source: slf. Occurrence: 2026-10-20T15:00:00.000Z.

First archived: 2026-10-20T15:21:38.147Z. Material modification: not recorded.

Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.

Score breakdown

55
intensity
0
Urban PEI term
0
Scenario weight
28
Recorded reference / batch anomaly

Technical details

DangerLevel3
DangerLabelConsiderable
Regions45
AreaSwiss Alps

Safety information

What to do in avalanche terrain

Three things first, then what to do before, during and after a trip in the snow. From the European avalanche warning services and the SLF.

For this reportAvalanche danger 3 (considerable) · Switzerland

  1. Read the avalanche bulletin

    Before every trip, and adapt the plan to it: most fatal avalanches happen at levels 2 and 3, moderate and considerable, not only when the danger is high.

    EAWS · SLF

  2. Carry the three tools

    Transceiver, probe and shovel, for each person, and know how to use them.

    SLF

  3. If someone is buried, search at once

    Call the emergency number and search with transceivers immediately: the first 15 minutes decide.

    SLF

Before, during, after. Here it is “after”.

Before · Before the trip

  • Plan with the bulletin

    Which slopes, which altitudes, which hours are dangerous.

  • Check the transceiver

    Batteries and a test together at the start.

  • Take a course

    Reading terrain and rescue are learned, not guessed.

EAWS · SLF

During · On the snow

  • One at a time on steep slopes

    Keep distances, and stop in safe places.

  • Watch the signs

    Recent avalanches, cracks, a "whumpf" in the snow: turn back.

SLF

After · If an avalanche happens

  • Caught: fight to stay on top

    Try to escape sideways; as it stops, make an air space in front of your face.

  • Witness: watch and search

    Note where the person was last seen, call for help, search with the transceiver.

SLF

If a life is in danger

112

Emergency number: Switzerland

Call 112

Questions people ask

What do the avalanche danger levels mean?

Five levels: 1 low, 2 moderate, 3 considerable, 4 high, 5 very high. The danger grows much more than one step at a time, and most fatal avalanches happen at levels 2 and 3. Source: EAWS.

Is a groomed piste safe?

Open, groomed pistes are protected by the resort. Off-piste, even close by, they are not: the bulletin applies there. Source: SLF.

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