Avalanche Forecast

Issued: Mar 10th, 2019 3:55PM

The alpine rating is moderate, the treeline rating is moderate, and the below treeline rating is low. Known problems include Storm Slabs.

shorton, Avalanche Canada

Sea To Sky.

Danger will increase as a storm arrives on Monday and continues into Tuesday.

Summary

Confidence

Moderate - Forecast snowfall amounts are uncertain

Weather Forecast

SUNDAY NIGHT: Increasing cloud overnight, 15-40 km/h west wind, alpine temperatures drop to -8 C.MONDAY: Snow starting midday with accumulations of 5-20 cm by the evening, 30-60 km/h west wind, alpine high temperatures near -6 C, freezing level 700 m.TUESDAY: Snow continues in the morning and eases off in the afternoon, total accumulations of 15-30 cm over the course of the storm, 20-30 km/h northwest wind, alpine high temperatures near -5 C, freezing level 1100 m.WEDNESDAY: Mix of sun and cloud, light west wind, alpine high temperatures near -5, freezing level 1100 m.

Avalanche Summary

Over the past few days, several small (size 1) storm slab and loose dry avalanches were triggered naturally and by skiers within the recent snow.

Snowpack Summary

New snow is accumulating above 10 to 15 cm of recent snow. Strong southwest wind will likely form drifts and wind slabs in exposed areas. Beneath the recent snow you may find hard wind-affected snow at higher elevations, soft faceted snow in shaded and sheltered areas, and crusts on steep southerly slopes. The middle and lower snowpack is well-settled.

Problems

Storm Slabs

Fresh slabs will form at higher elevations as snow accumulates throughout the day. Forecast snowfall amounts are variable, so pay attention to how much it snows in your local area.

Avoid freshly wind loaded features.Minimize exposure during periods of heavy loading from new snow and wind.Watch for whumpfing, hollow sounds, and shooting cracks.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 1.5

Valid until: Mar 11th, 2019 2:00PM