Little Yoho Avalanche Forecast

Feb 26th, 2020 4:00PM

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

Watch locally for wind transport and slab development Thursday. Great skiing and coverage in sheltered areas.

Summary

Weather Forecast

Continued moderate W winds in the alpine Thursday with 5cm of snow.  Temperatures will have highs of -7C at treeline. Additional inputs of 5cm Friday and 10+cm Saturday.

Snowpack Summary

10-20 cm of recent storm snow covers previously formed wind slabs in lee areas, and buried sun crusts on steep solar aspects. The Feb. 1 rain crust is down 20-50 cm and present below 1900 m. A dense snowpack with no significant weaknesses is present in most areas, but thin rocky areas have a faceted base.

Avalanche Summary

No new avalanches observed or reported Wednesday.  Likely some wind slab formation is occurring in the high alpine.

Confidence

Wind speed and direction is uncertain on Thursday

Problems

Wind Slabs

An icon showing Wind Slabs

Likelihood

Likely - Possible

Expected Size

1 - 2

New wind slabs are forming in the alpine mainly in the lees of alpine terrain. They have been reported to be a touch more reactive than yesterday.

  • Pay attention to overhead hazards like cornices which could trigger slabs.
  • Be careful with wind loaded pockets, especially near ridge crests and roll-overs.

Aspects:

All aspects.

Elevations:

Alpine.

Valid until: Feb 27th, 2020 4:00PM