Avalanche Canada MBender, Avalanche Canada

Sea to Sky Avalanche Forecast

Nov 24th, 2019 5:00PM

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

New snow accumulating over the weekend is limited to upper elevations. If you are venturing out, wind slabs in alpine terrain will be the main concern.

Summary

Confidence

No Rating - Uncertainty is due to the limited number of field observations.

Weather Forecast

SUNDAY Night: Cloudy with clear periods, moderate northwest wind, alpine temperature -7 C.

MONDAY: Mix of sun and cloud, light northwest wind, alpine temperature -8 C, freezing level 700 m.

TUESDAY: Mix of sun and cloud, light northeast wind, alpine temperature -10 C, freezing level valley bottom.

WEDNESDAY: Mainly sunny, moderate to strong northeast wind, alpine temperature -12 C, freezing level at valley bottom.

Avalanche Summary

Observations are very limited right now, with recreationists just starting to get into the mountains and operations starting up. We haven't received any reports of recent avalanche activity. The most likely place to trigger an avalanche would be where the ground is smooth, such as on glaciers, rock slabs, scree slopes, or grassy slopes.

If you see anything while out in the field, please consider sharing that information with us and fellow recreationists via the Mountain Information Network (MIN).

Snowpack Summary

New snow falling through the weekend was limited to upper treeline and alpine where 10-20cm of snow may have accumulated. The new snow will cover a variety of surfaces, from bare ground below treeline, around 50 cm of snow intermixed with trees and rocks at treeline and lower alpine elevations, and upwards of 100 cm of snow above 2000 m.

The new snow may not bond well to an underlying hard melt-freeze crust. Use particular caution where the snow surface appears smooth, as this may mean an avalanche could propagate over a wider area.

Problems

Wind Slabs

An icon showing Wind Slabs

Likelihood

Possible-Likely

Expected Size

1 - 2

The most likely place to trigger an avalanche is at alpine elevations where the ground roughness is smooth, for example on glacial ice, scree slopes, grassy slopes, or rock slabs. With the lack of information available, it is best to recreate conservatively, be on high alert, and conduct your own assessments throughout the day.

Aspects:

North, North East, East, South East, North West.

Elevations:

Alpine.

Valid until: Nov 25th, 2019 4:00PM