Avalanche Forecast Little Yoho

Date Issued: Valid Until:

Parks Canada brian webster, Parks Canada

Avalanche Forecast

Thu Jan. 31st ยท 6:11PM

Alpine

Danger Ratings Moderate

Treeline

Danger Ratings Moderate

Below Treeline

Danger Ratings Low
Wind Slabs Wind Slabs
Deep Persistent Slabs Deep Persistent Slabs

Alpine

Danger Ratings Considerable

Treeline

Danger Ratings Moderate

Below Treeline

Danger Ratings Moderate

Alpine

Danger Ratings Considerable

Treeline

Danger Ratings Moderate

Below Treeline

Danger Ratings Low
Friday marks a change in conditions with an incoming storm. Pay attention to new snowfall amounts and what the wind is doing.

Weather Forecast

Snow beginning on Friday with various models forecasting between 10 and 20 cm along the divide by the end of the day. More snow on Saturday (up to 30 cm) and then very cold arctic air settles in for Sunday. Winds forecast to be mod to strong from the SW on Friday.

Snowpack Summary

Some wind effect in alpine and small windslabs exist in immediate lees. The mid and lower pack is generally well settled.

Avalanche Summary

No new avalanche activity

Confidence

Intensity of incoming weather systems is uncertain on Friday

Problems

Wind Slabs

Wind Slabs

Fresh wind slabs can be expected from forecasted new snow and winds on Friday.

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

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 1.5
Deep Persistent Slabs

Deep Persistent Slabs

In Little Yoho the mid and lower pack is generally well settled with no significant shears. In some areas where the snowpack is shallower the Dec 10 persistent facet layer is producing shears in the hard range.

Avoid thin, rocky or unsupported slopes.

Aspects: All aspects.

Elevations: Alpine.

Likelihood

Unlikely

Expected Size

1 - 3