Bollettino valanghe

Central Sierra Nevada

Sierra Avalanche Center
Vedi sulla mappa

Pericolo valanghe

Alta quota
2 · Moderato
Limite del bosco
2 · Moderato
Sotto il limite
2 · Moderato
Open full map
Non aggiornato — questo bollettino è scaduto 13 years ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

This morning the avalanche danger is LOW. As the day warms up, small pockets of MODERATE avalanche danger may form on E-SE-S-SW-W aspects on slopes 35 degrees and steeper due to daytime warming creating small shallow wet snow instabilities.

Problemi valanghivi

  • Loose Wet

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1

    Warm sunny weather will create wet snow on the sun exposed E-SE-S-SW-W aspects today. Some wet snow instabilities like roller balls, pinwheels, and wet point releases may form on these aspects especially in areas near exposed rocks or trees. The continued northerly winds should help limit these wet snow instabilities. They should also remain shallow and only involve the new snow. Even though these loose wet avalanches should remain too small to bury a person, they could still push a person into an area with other consequences or could become more serious in areas where terrain traps exist. Wet slab avalanches remain unlikely today; however, they are not impossible. In the unlikely event a wet slab did occur, it should also remain shallow and only involve the new snow.

Avalanche Discussion

Yesterday observations on Incline Lake Peak (photo, more info) revealed widespread wind scouring at all elevations on N-NE-E aspects. Even on the below treeline sheltered slopes the strong NE winds had exposed old crusts in some areas. In the most sheltered areas some patches of softer snow still remained. The winds had completely scoured the new snow away from the more exposed near and above treeline N-NE slopes. On the SW-S-SE aspects wind slabs that did not extend very far downslope did exist. Snowpit tests on these wind slabs did not reveal signs of instability.

Regioni coperte