Avalanche Forecast Waterton Lakes National Park

Date Issued: Valid Until:

Parks Canada Marcus Waring, Parks Canada

Avalanche Forecast

Thu Jan. 10th · 4:00PM

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 Considerable

Below Treeline

Danger Ratings Moderate

Alpine

Danger Ratings Considerable

Treeline

Danger Ratings Considerable

Below Treeline

Danger Ratings Moderate
Lingering uncertainty about the ability to trigger deep persistent weak layers requires a cautious approach to terrain.  Avoid thick to thin snowpack transitions, and have a healthy respect for what is above you.

Weather Forecast

FRIDAY        A mix of sun and cloud with Moderate SW wind. Alpine temperature inversion with a high of +2 at 2000m.SATURDAY  Mostly Sunny with Light West Winds. Freezing Level rising to 2500m.SUNDAY      Sunny. Calm Winds. Freezing levels 3000m

Snowpack Summary

The Alpine remains wind affected with 20-30cm new wind slabs above many layers of old wind slab. High daytime freezing levels have led to significant settlement and moist snow at tree line and below. At all elevations the mid snowpack is well settled however the bottom remains facetted and weak. Snow cover is variable (160cm average at treeline).

Avalanche Summary

Size 1 Loose Wet debris observed along the Akamina Parkway between 1800 and 2000m on NE and SE aspects.

Confidence

Freezing levels are uncertain on Saturday

Problems

Wind Slabs

Wind Slabs

Use caution in lee areas. Recent wind loading have created wind slabs.If triggered the wind slabs may step down to deeper layers resulting in large avalanches.

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

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 2
Deep Persistent Slabs

Deep Persistent Slabs

There has not been much recent activity on the facets deep in the snowpack, but there is still the possibility to trigger them in shallow areas.

Avoid steep convexities or areas with a thin or variable snowpack.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Possible - Unlikely

Expected Size

1 - 3