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Avalanche Forecast

Archived

Apr 20th, 2019–Apr 21st, 2019

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

SATURDAY Night: Mainly cloudy / light to moderate south wind / alpine high temperature -5 / freezing level 800 m

SUNDAY: Mainly cloudy with scattered flurries / moderate south winds / alpine high temperature -2 C, freezing level 1400 m

MONDAY: Flurries, accumulation 5-10 cm / moderate southwest wind / alpine high temperature -2 C / freezing level 1400 m

TUESDAY: Mix of sun and cloud / light southwest wind / alpine high temperature -3 / freezing level 1200 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. This 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.