Avalanche Forecast

Issued: Mar 30th, 2019 4:08PM

The alpine rating is low, the treeline rating is low, and the below treeline rating is low. Known problems include Loose Wet.

mbender, Avalanche Canada

Sea To Sky.

A few more days to enjoy the warm and sunny spring conditions.

Summary

Confidence

High - The weather pattern is stable

Weather Forecast

SUNDAY: Mix of sun and cloud / light west wind / alpine temperature 2 C / freezing level 2000 mMONDAY: Mix of sun and cloud / light east wind / alpine temperature 1 C / freezing level 1900 mTUESDAY: Cloudy with sunny periods / light east wind / alpine temperature 2 C / freezing level 2000 m

Avalanche Summary

On Thursday there were reports of several skier triggered size 1.5 wind slab avalanches in the alpine.

Snowpack Summary

Recently formed wind slabs in the alpine are bonding well to the underlying layers, but there might still be isolated pockets along ridge crests which can be triggered by humans (see the MIN report of our field team here). On higher north aspects above 2000 m new snow from early last week is gradually bonding with the dry, faceted [weak and sugary] snow underneath. In most other places surface snow is moist. Below 1800 m the entire snowpack is either moist or wet underneath a supportive melt/freeze crust.

Problems

Loose Wet

The snow surface will weaken with increasing air temperatures and sun during the day. This increases the likelihood of thin loose wet avalanches running in steep terrain, especially on those slopes facing the sun.

Cornices become weak with daytime heating, travel early on exposed slopes.Minimize exposure to steep, sun exposed slopes when the solar radiation is strong.

Aspects: East, South East, South, South West, West.

Elevations: All elevations.

Likelihood

Unlikely - Possible

Expected Size

1 - 1.5

Valid until: Mar 31st, 2019 2:00PM