Avalanche Forecast
Issued: Feb 2nd, 2019 4:00PM
The alpine rating is Storm Slabs and Deep Persistent Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeGreat ski quality in sheltered areas. Give the new snow time to settle before committing to bigger terrain features with consequence.
Summary
Weather Forecast
Arctic air has moved in and temperatures will see lows to -30C and highs around -20C for the next few days. Winds have switched to the NE and will become light on Sunday. Only trace amounts of new snow are in the forecast.
Snowpack Summary
30-40cm of new snow with moderate to strong variable winds are building slabs in lee areas of the alpine. In locations up to 2200m a thin but reactive layer of surface hoar and/or crust is found down 60-70cm. The mid and lower snowpack have few weaknesses, however concern remains for the weak facets below the Dec 10 interface in shallow areas.
Avalanche Summary
Skied were obscured all day Saturday in the Little Yoho area so no observations were made.
Confidence
Problems
Storm Slabs
Expect storm slabs to be reactive in the short term on many aspects. Especially watch areas where the buried Jan. 17th surface hoar and/or crust layer is present . This has been found below 2200m and where found, was reactive before this last storm.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Deep Persistent Slabs
In isolated shallow snowpack areas of Little Yoho the new snow load may wake up the deep persistent facet weakness.
Use conservative route selection, choose moderate angled and supported terrain with low consequence.Avoid thin, rocky or unsupported slopes.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Feb 3rd, 2019 4:00PM