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Avalanche Forecast

Archived

Mar 20th, 2021–Mar 21st, 2021

Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

Little Yoho.

Forecasted cooler temperatures and cloud cover will keep the lower elevation hazard at LOW. This hazard could increase quickly if we receive warmer and sunnier conditions than expected.

Weather Forecast

Forecasted freezing level will stay near valley bottom till Monday with minimal fluctuating between daytime highs and overnight lows. Light precipe overnight Saturday could bring snow accumulation of 10cm to the forecast region. Strong westerly winds are expected at ridge top.

Snowpack Summary

5-10 cm of new snow fell Friday with rain below 1800m. The new snow now buries sun crust on steep solar aspects (East to West) into the Alpine, a temperature crust on all aspects below 1800m and Surface hoar up to 10mm located in isolated, shaded areas.

Avalanche Summary

No new avalanches observed or reported today.

Confidence

Problems

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind slabs that form over a persistent weak layer (surface hoar, depth hoar, or near-surface facets) may be termed Persistent Slabs or may develop into Persistent Slabs.