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Archived

Avalanche Forecast

Dec 18th, 2018–Dec 19th, 2018
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
4: High
The avalanche danger rating in the alpine will be high
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: South Coast.

Another break between storms. Expect to see danger increase again as the next pacific frontal system impacts the region on Thursday.

Confidence

High -

Weather Forecast

TUESDAY NIGHT: Rain showers or flurries. Alpine temperature 0. Moderate to strong southwest wind. Freezing level 1200 m.WEDNESDAY: Scattered rain showers or flurries. Alpine temperature 0. Light west wind. Freezing level 1400 mTHURSDAY: Rain, accumulation 30-40 mm. Alpine temperature 2. Moderate to strong southwest wind. Freezing level 1900 m.FRIDAY: Cloudy with sunny breaks. Alpine temperature -4. Light west wind.  Freezing level 500 m.

Avalanche Summary

No new reports of avalanches in the region; however, in the neighbouring Sea to Sky region numerous natural and explosives controlled avalanches have been reported through the last several days. Similar avalanche activity could likely be found at high elevations in the South Coast region.

Snowpack Summary

Recent precipitation has come as rain again resulting in a moist or wet surface snow. The exception is higher elevations near Squamish where dry snow likely exists. For these higher elevation areas, expect to see storm snow from the past few days approaching 100cm with accompanied thick wind deposits in alpine lee terrain. In alpine areas near Squamish, snow depths are now well over 200 cm.

Avalanche Problems

Wind Slabs

Hazard is primarily at higher elevations where the new snow has been accumulating. The recent storm on Monday night came with strong winds creating wind slabs in the lee of terrain features.
Be alert to conditions that change with elevation.Watch for signs of instability such as whumpfing, cracking, or recent avalanches.

Aspects: North, North East, East, North West.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2.5