Avalanche Forecast
Issued: Mar 23rd, 2014 9:06AM
The alpine rating is Storm Slabs and Deep Persistent Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeSummary
Confidence
Fair - Forecast snowfall amounts are uncertain
Weather Forecast
Synopsis: An arctic high pressure ridge in the interior of BC will cool things down before the next Pacific frontal wave arrives on Tuesday.Tonight: Cloudy, freezing level at valley bottom, winds light, from the south west.Monday: Cloudy with flurries, freezing level around 1300 metres, winds light to moderate from the south east.Tuesday: Cloudy with snow, 10 to 20 cm in the forecast, freezing level at 1400 metres, winds light to moderate from the south.Wednesday: Cloudy, with snow, 10 to 15cm in the forecast. Freezing level around 1300 metres, winds from the south, light to moderate.
Avalanche Summary
No reports of avalanches from yesterday Caution should be exercised on solar aspects as the spring sun begins to heat things up. Cornices are becoming large and mature and deserve serious respect.
Snowpack Summary
Up to 60cm of snow has fallen in parts of the forecast region in the past 7 days. This storm snow combined with winds continues to produce wind slabs at tree line and above. A well developed sun crust has formed on solar aspects and, prior to this storm, surface hoar formed on shady, sheltered slopes. At lower elevations, (below 1200m)Â a melt-freeze (or rain) crust can be expected in most areas. Below the storm snow, the snowpack is generally well settled from the recently warm weather. Two persistent weak layers remain a concern but these have become less reactive recently. The early-March crust/facet layer is down roughly 1m and the early February layer is down 1.5m or more. These layers are now deep enough that human-triggering is unlikely, but smaller avalanches or cornices failures have the potential to step down to these layers, and,.... cornices are definitely getting larger these days. Lowered freezing levels are good for overnight recovery of the snowpack below 1700 metres. Daytime warming could produce loose, wet avalanches below 1700m especially on steep solar aspects.
Problems
Storm Slabs
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Deep Persistent Slabs
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Mar 24th, 2014 2:00PM