Avalanche forecast

Little Yoho

Apr 1 – 2, 2023Avalanche Canada
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Avalanche danger

Mon
Tue
Alpine
1 · Low
Treeline
1 · Low
Below
1 · Low

Highlights

Clouds with light snowfall should discourage heating through the start of next week with minimal natural avalanche activity expected.

We continue to avoid thin snowpack areas where a large avalanche could be triggered on the basal weakness.

Avalanche problems

  • Deep Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely
    Size
    2–3.5

    Continue to pay attention to the weak basal facet layer in areas where the snowpack is shallow (<2 m) such as moraines or wind-scoured areas, or in places where a large trigger like a cornice fall could impact the slope.

Confidence

Moderate

Avalanche Summary

No new avalanches observed or reported today.

Snowpack Summary

A few cm of new snow buries sun crusts to ridgetop and temperature crusts below 1500m.

The March 25 interface is down 5 to15 cm while the March 12 interface is down 15 to 30cm. Both of these are represented by crusts on solar aspects and facets on shaded slopes.

The mid-pack in this area is generally strong, although the base of the snowpack consists of weak facets in thin areas (<2 m).

Weather Summary

Saturday evening a low over the Prairies will maintain cloud and flurries as winds shift to the NW at 30km/h. Snowfall amount: 5-10 through midday Sunday.

By Sunday afternoon the low will drive an upslope push as winds shift NE and diminish. Snowfall amounts will likely favour the eastern slopes and range from 5-15cm through Monday morning.

Terrain and Travel Advice

  • Avoid shallow, rocky areas where the snowpack transitions from thick to thin.
  • Avoid exposure to steep, sun exposed slopes, especially when the solar radiation is strong.
  • Cornices become weak with daytime heating or solar exposure.

Regions covered