Bulletin d’avalanche

South Coast

Jan 5, 2018Avalanche Canada
Voir sur la carte
Archivé · expiré 9 years ago

Danger d’avalanche

Sat
Sun
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
2 · Modéré
Ouvrir la carte complète

Points saillants

Heavy rainfall at all elevations Thursday night and Friday is expected to make travel conditions rather miserable, and may induce a round of natural avalanche activity.

Problèmes avalancheux

  • Storm Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2
    Heavy rain is expected at all elevations Thursday night and Friday which may induce a round of natural avalanche activity.  Travel conditions are expected to be rather miserable as well.

Confidence

Low - Timing, track, or intensity of incoming weather system is uncertain on Friday

Weather Forecast

Friday looks to be a pretty funky meteorological period. The good news is that we are expected to return to a more typical stormy winter pattern. The bad news is that we have to endure some rain, perhaps even some freezing rain, before we get back to the snow on Saturday. THURSDAY NIGHT: Freezing level around 2500 m, moderate to strong south/southwest wind, 20 to 30 mm of precipitation expected.FRIDAY: Overcast, freezing level around 1900 m, moderate to strong south/southwest wind, 30 to 45 mm of precipitation expected.SATURDAY: Overcast, freezing level around 1200 m lowering to 700 m in the afternoon, light south/southeast wind, 2 to 4 mm of precipitation expected.SUNDAY: Scattered cloud, freezing level around 700 m, light south/southeast wind, 4 to 8 mm of precipitation expected.

Avalanche Summary

No new avalanche activity has been reported recently, but heavy rain forecast for Thursday night and Friday may induce a round of natural avalanche activity.

Snowpack Summary

Two successive storms produced 40 to 80 cm of snow late last week. This week temperatures warmed dramatically. On Wednesday the Deeks Peak weather station (1280 m) got up to +8.7 C, Mt. Strachan (1220 m) topped out at +11.4 C. These warm temperatures combined with last Friday night's rain event have allowed the entire snowpack to settle and stabilize, but heavy rainfall could induce a round of natural avalanche activity. 50 to 100 cm below the surface there are a few prominent melt-freeze crusts that were buried mid-December. This layer has not produced much in the way of avalanche activity and is likely trending towards dormancy. Beneath the mid-December crust, the lower snowpack is generally strong and well settled.The snowpack depth is about 160 cm at 1000 m, 220 cm at 1250 m. Many early season hazards are still present at lower elevations.

Régions couvertes