Wet, warm weather forecasted for Friday night and into the weekend means the potential for loose, wet avalanches in extreme terrain and pockets of storm slab in areas that receive snow instead or rain.
Summary
Confidence
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Weather Forecast
The next wave of warm, wet weather is expected to hit the South Coast by Saturday morning.Saturday: Wet snow or rain, accumulation 20-30 mm. Moderate to strong south wind. Alpine temperature 2. Freezing level 1600m.Sunday: Rain, accumulation 30-40 mm. Strong south wind. Alpine temperature 5. Freezing level 2500m.Monday: Flurries, accumulation 10-15 cm. Light to moderate southwest wind. Alpine temperature -1. Freezing level 1000 m.
Avalanche Summary
No recent avalanches have been reported. However, the recent rain-on-snow event is suspected to have caused a natural, loose wet avalanche cycle. Although natural avalanche activity and human triggering potential has decreased with cooler temperatures, ongoing rain will maintain the potential for loose wet avalanches, particularly in steep, unsupported terrain. Storm slab development is also a concern at high alpine elevations where precipitation may fall as snow accompanied with strong winds.
Snowpack Summary
There is little information on snowpack structure at this time, except that recent heavy rainfall has saturated the upper snowpack at all elevations and washed away much of the snow at lower elevations. Snow depth varies from 45 - 130 cm for elevations between 900 - 1200m across the region.
jmcbride,
Avalanche Canada
