Kootenay Boundary

There is the possibility that locally higher than forecast precipitation may fall in certain parts of the region. In the case of higher than forecast precipitation, the avalanche danger may be higher than indicated.

Low - Due to the number of field observations

FRIDAY: Flurries, accumulation 10-15cm / Moderate to strong southwest wind / Alpine temperature -2 / Freezing level 1500mSATURDAY: Mainly cloudy with isolated flurries, accumulation 5-10cm / Moderate southwest wind / Alpine temperature -4 / Freezing level 1300mSUNDAY: Mix of sun and cloud / Light northwest wind / Alpine temperature -5 / Freezing level 1200m

On Friday, the main concern is lingering wind slabs in high elevation north facing terrain and the possibility of large overhanging cornices releasing with overall warm temperatures over the coming days.

The region is expected to have entered a period of widespread melt-freeze conditions on all aspects and elevations except for high north facing terrain where the surface snow is expected to remain dry. In high elevation terrain, recent strong southwest winds and new snowfall has formed wind slabs in leeward features. At lower elevations and on sun exposed slopes, there are likely moist or wet snow sitting on top of several well bonded crust layers in the upper snowpack. A rain crust which was buried on March 21 extends into the alpine is now down 60-80 cm. This crust was the bed surface for several avalanches during the solar cycle at the end of last week. At elevations above around 2100m, the February persistent weak layers may still be lingering down around 100-150cm and weak basal facets may still be lingering in shallow snowpack areas. These deep weak layers appear to have gone dormant but an isolated avalanche or cornice fall still has the potential to step down in the right conditions.