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Avalanche Forecast

Archived

Apr 22nd, 2019–Apr 23rd, 2019

Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

Northwest Inland.

Due to a very limited number of information sources at this time of year, this report is based off of weather forecast information only. If you have been out recently, send us your observations by submitting to the Mountain Information Network (MIN).

Confidence

Low - Due to the number of field observations

Weather Forecast

MONDAY Night: Mainly cloudy with sunny breaks / moderate west winds / alpine high temperature -8 C, freezing level 400 m

TUESDAY: Mainly cloudy isolated flurries and sunny breaks / moderate west wind / alpine high temperature -4 C / freezing level 1100 m

WEDNESDAY: Mix of sun and cloud / light west wind / alpine high temperature -6 / freezing level 800 m

THURSDAY: Mainly cloudy / light to moderate southwest wind / alpine high temperature -2 / freezing level 1400 m

Avalanche Summary

There have been no recent reports of avalanche activity. If you're out we'd love it if you would submit what you're seeing to the Mountain Information Network.

Snowpack Summary

15-30 cm of new snow accumulated over the past week at upper elevations. This all likely sits over a widespread, supportive melt-freeze crust from early April. Surface hoar and facets were previously observed on this crust on high north aspects. At lower elevations, ongoing warm weather has been promoting isothermal snowpack conditions and melting the snowpack away.

Problems

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind slabs that form over a persistent weak layer (surface hoar, depth hoar, or near-surface facets) may be termed Persistent Slabs or may develop into Persistent Slabs.