Archived

Avalanche Forecast

Apr 14th, 2017–Apr 15th, 2017

Alpine

2: Moderate

The avalanche danger rating in the alpine will be moderate

Treeline

1: Low

The avalanche danger rating at treeline will be low

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

1: Low

The avalanche danger rating at treeline will be low

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.

Observations from the region have been very limited recently. If you are out in the mountains, please consider posting your observations to the Mountain Information Network and help us improve the bulletin. Click here for more details.

Confidence

Low - Due to the number of field observations

Weather Forecast

SATURDAY: Cloudy with sunny periods / Light west wind / Alpine temperature -3 / Freezing level 1300mSUNDAY: Mix of sun and cloud / Light east wind / Alpine temperature -3 / Freezing level 1200mSUNDAY: Mix of sun and cloud / Light southeast wind / Alpine temperature -1 / Freezing level 1500m

Avalanche Summary

There have been no recent reports of avalanche activity. That being said there is little to no information being passed on from the region recently. Exposure to large overhanging cornices remains a significant concern. As the sun comes out over the weekend I would expect see cornices weaken and loose snow avalanches run from steep sun exposed slopes during the warmest parts of the day.

Snowpack Summary

New snow falling last week has been redistributed by south and east wind at upper elevations. This is likely sitting on a hard wind crust in exposed alpine areas and sun crust on aspects facing the sun. Elevations below 1300m roughly are experiencing a daily melt-freeze cycle and the snowpack is likely moist or wet throughout its entire thickness. A persistent weak layer buried late February may be found down approximately 70-100cm and a deep persistent weak layer is still lingering near the bottom of the snowpack in all areas.

Avalanche Problems

Cornices

Solar radiation and daytime warming are common cornice triggers for cornices.

Give cornices a wide berth when travelling on or below ridges.Cornices become weak with daytime heating.Even small cornice falls may trigger larger avalanches on slopes below

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

Elevations: Alpine.

Likelihood: Possible

Expected Size: 2 - 3