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Archived

Avalanche Forecast

Apr 17th, 2018–Apr 18th, 2018
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: Northwest Inland.

There is a lack of information to base our avalanche forecasts on this time of year. As a result, this forecast is based solely on weather information. If you have been out recently, post your observations to the Mountain Information Network (MIN).

Confidence

Low - Due to the number of field observations

Weather Forecast

WEDNESDAY: Cloudy with sunny periods. Light to moderate southwest wind. Alpine temperature -3. Freezing level 1300 m. THURSDAY:  Cloudy with isolated flurries. Moderate to strong southwest wind. Alpine temperature -4. Freezing level 1200 m. FRIDAY: Cloudy with sunny breaks and isolated flurries. Moderate south wind. Alpine temperature -2. Freezing level 1400 m.

Avalanche Summary

No recent new avalanches have been reported.

Snowpack Summary

Lingering wind slabs on convex features below ridgetops may still be reactive to human triggers. Weak layers buried around March 19th are roughly 40 cm below the surface (up to 100 cm in deeper snowpack areas). These weak layers include surface hoar on shaded aspects at high elevations and hard crusts on solar aspects and below treeline.Sugary facets may be found near the base of the snowpack in shallow, rocky snowpack areas on shady aspects.

Avalanche Problems

Wind Slabs

Wind slabs may still be reactive in isolated locations.
Be cautious as you transition into wind affected terrain.Give cornices a wide berth when travelling on or below ridges.Use ridges or ribs to avoid pockets of wind loaded snow.

Aspects: North, North East, East, South East, South.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 1.5