Avalanche Forecast

Issued: Apr 5th, 2023 4:00PM

The alpine rating is considerable, the treeline rating is considerable, and the below treeline rating is moderate. Known problems include Storm Slabs.

Avalanche Canada wlewis, Avalanche Canada


Fresh and reactive wind slabs will develop over the day. Step back into conservative terrain choices as snowfall accumulates. Higher snowfall is expected as you travel further west.




Avalanche Summary

Recent avalanche activity has been limited to small (size 1) loose dry avalanches out of steep northerly aspects.

Snowpack Summary

Fresh snow with strong southerly winds will form deeper deposits in north facing terrain features. Precipitation below 1000 m may fall as rain. New snow/rain falls over dry snow on shaded slopes at higher elevations, and over a crust on south facing slopes and low elevations. New snow bonding to this crust should be suspect.

The middle and lower portions of the snowpack are strong and well-bonded.

Weather Summary

Wednesday Night

Mostly cloudy, up to 15 cm of snow overnight with strong southerly winds. Freezing levels remain around 1000 m.


Cloudy, with 10-25 cm. Highest amounts in the south and unusually in the east , around Mt Washington. Strong to extreme southerly winds. Freezing levels reaching 1500 m.

Snowfall continues overnight around 10-20 cm.


Cloudy with light snowfall continuing: 5-10 cm, moderate southwest winds. Freezing levels around 1000 m.


Cloudy with 5 cm of snow possible, strong southwest winds. Freezing levels around 1000 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Storm slab size and sensitivity to triggering will likely increase through the day.
  • Be careful to keep storm day fever from luring you out into bigger terrain features.
  • Avoid exposure to overhead avalanche terrain during periods of heavy loading from new snow, wind or rain.


Storm Slabs

An icon showing Storm Slabs

Reactive storm slabs will form overnight on Wednesday and continue to build throughout Thursday. Avoid steep open slopes and wind loaded features.

Aspects: All aspects.

Elevations: All elevations.


Possible - Likely

Expected Size

1 - 2

Valid until: Apr 6th, 2023 4:00PM