Avalanche Forecast
Issued: Nov 29th, 2012 8:39AM
The alpine rating is Storm Slabs and Persistent Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeSummary
Confidence
Fair - Due to limited field observations for the entire period
Weather Forecast
Overnight Thursday: Freezing levels are expected to continue to rise on Thursday evening up to about 1600 metres and should be combined with moderate SW winds and light precipitation. During the overnight period, expect freezing levels to move down to about 1200 metres combined with continued moderate SW winds and precipitation increasing to moderate ( 10-15 mm for the Fernie Area, and about 10 mm further East). Friday: Freezing levels should rise a little bit during the day as waves of light to moderate precipitation continue ( 5-10 mm total during the day). SW winds are expected to continue in the alpine.Saturday: The freezing level should start to drop down to near the valley bottoms after a cold front moves through to the East. Alpine winds should continue to be moderate from the SW. Poor confidence in precipitation amounts and timing for Saturday and Sunday.
Avalanche Summary
No recent avalanche observations.
Snowpack Summary
Surface conditions vary throughout the region. You might find surface hoar, a light zipper crust or something entirely different depending on what drainage you're in. You need to know what the weekends snow is falling on before committing to a line. Start by going small this weekend & remember that the storm slab has the potential to behave in very different manors depending on what aspect & drainage you're in. This is a very young snowpack, don't take your eyes off it. Alpine snow depths are somewhere between 1 - 2 m. Depths quickly drop below threshold near treeline. An early season rain crust exists from rain events in late Oct./early Nov. Wind exposed terrain at and above treeline features old isolated wind slabs that range from 50 - 100 cm in depth.
Problems
Storm Slabs
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Persistent Slabs
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Nov 30th, 2012 2:00PM