Boletín de aludes

Vest-Finnmark

NVE
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Peligro de aludes

All elevations
2 · Moderado
Desactualizado: este boletín caducó 3 months ago. Estás viendo condiciones pasadas, no el boletín vigente.

Lo esencial

In many areas, the snowpack is melt‑transformed, coarse‑grained, and drains water well. However, wet avalanches may still release naturally in exposed terrain, especially if the mild temperatures become more pronounced than expected. Wet loose avalanches are the most likely problem. Most are expected to be small, but medium‑sized avalanches may occur.

At higher elevations, layering in the snowpack is still present, particularly in northern aspects. With strong meltwater production, water can percolate downward and weaken these layers, potentially triggering wet slab avalanches. These avalanches are difficult to forecast and can be larger than typical loose‑snow avalanches. Glide avalanches may also occur where water accumulates above smooth bed surfaces such as rock slabs. In addition, cornices may weaken and break as temperatures rise.

Problemas de aludes

  • Wet snow

    • Above 700 m

Avalanche Activity

In many areas, the snowpack is melt‑transformed, coarse‑grained, and drains water well. However, wet avalanches may still release naturally in exposed terrain, especially if the mild temperatures become more pronounced than expected. Wet loose avalanches are the most likely problem. Most are expected to be small, but medium‑sized avalanches may occur. At higher elevations, layering in the snowpack is still present, particularly in northern aspects. With strong meltwater production, water can percolate downward and weaken these layers, potentially triggering wet slab avalanches. These avalanches are difficult to forecast and can be larger than typical loose‑snow avalanches. Glide avalanches may also occur where water accumulates above smooth bed surfaces such as rock slabs. In addition, cornices may weaken and break as temperatures rise.

Mange steder er snødekket smelteomvandlet, grovkornet og drenerer vann godt. Likevel kan våte skred fortsatt løsne naturlig på utsatte steder, særlig dersom mildværet blir mer omfattende enn ventet. Våte løssnøskred er det mest sannsynlige skredproblemet. De fleste ventes å være små, men middels store skred kan forekomme.

Høyt til fjells finnes det fortsatt lagdeling i snødekket, spesielt i nordvendte sider. Hvis mildværet når opp i disse høydene, kan smeltevann trenge ned i snødekket og svekke lagene, noe som kan gi våte flakskred. Slike skred er vanskelige å varsle og kan bli større enn typiske løssnøskred. I tillegg kan glideskred forekomme der vann samler seg over glatte underlag som svaberg.

Snowpack Structure

Snøoverflaten har et tydelig vårlig preg, og det har vært kraftig smelting den siste tiden. Sammenhengende snø finnes fra omtrent 200–400 moh og oppover, avhengig av hvor i regionen du befinner deg, med mest snø i nordvendt terreng og i indre strøk. Snødekket er i hovedsak smelteomvandlet. Likevel kan det fortsatt finnes noe lagdeling igjen i skyggesider og på de høyeste toppene. I høyfjellet og i skyggevendt terreng kan det fortsatt finnes eldre svake lag dypt i snødekket. Store skred kan ikke utelukkes ved rask oppvarming, regn eller skavlbrudd.

Tendency

High temperatures and sunny weather will increase the water content in the snowpack. In many areas, the snowpack is melt‑transformed, coarse‑grained, and drains water well. However, wet avalanches may still release naturally in exposed terrain, especially on steep, sun‑exposed slopes. Wet loose avalanches are the most likely avalanche problem. Most are expected to be small, but medium‑sized avalanches may occur.

At higher elevations, layering in the snowpack is still present, particularly in northern aspects. With strong meltwater production, water can percolate downward and weaken these layers, potentially triggering wet slab avalanches. These avalanches are difficult to forecast and can be larger than typical loose‑snow avalanches. Glide avalanches may also occur where water accumulates above smooth bed surfaces such as rock slabs. In addition, cornices may weaken and break as temperatures rise.

Bulletin data: Norwegian Water Resources and Energy Directorate (NVE), varsom.no (NLOD)

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