Boletín de aludes de Northwest Inland — Apr 12, 2022

Lo esencial

Watch for wind slabs in steep alpine terrain as the cold winter-like conditions persist.

Problemas de aludes

Wind Slabs
N
NE
E
SE
S
SW
W
NW
Alta montaña
Límite del bosque
Bajo el límite del bosque
Probabilidad
Possible
Tamaño
1–2
Recent southeast wind has likely formed wind slabs on west and north facing slopes in the alpine and near ridgetops at treeline.

Confidence

Moderate - Uncertainty is due to how quickly the snowpack will recover and gain strength.

Weather Forecast

TUESDAY NIGHT: Mostly clear skies, no precipitation, 30-40 km/h wind from the east, treeline temperature drop to -18 C.

WEDNESDAY: Mix of sun and cloud, no significant precipitation, 20-30 km/h wind from the east, treeline temperatures reach -14 C.

THURSDAY: Sunny, no precipitation, light wind from the east, treeline temperatures reach -8 C.

FRIDAY: Clear skies in the morning then increasing cloud in the afternoon, no precipitation, light wind from the southeast, treeline temperatures reach -8 C.

Avalanche Summary

No notable avalanche activity has been reported since last Friday, but reports of blowing snow on Monday suggest wind slabs have formed at upper elevations.

Snowpack Summary

Open terrain has been wind-affected, with recent wind scouring southeast slopes and loading snow onto east and north facing slopes. Sheltered areas may still have soft snow. A widespread melt-freeze crust can be found 20 to 50 cm deep in most areas, and up to 80 cm in the snowiest parts of the region. This crust is near the surface below 1200 m.

Cornices are very large and exposure to them should be minimized, especially during warm or windy weather.

Terrain and Travel

Be careful with wind loaded pockets, especially near ridge crests and roll-overs.
Cornices often break further back than expected; give them a wide berth when traveling on ridgetops.

Northwest Inland

Peligro de aludes