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Archived

Avalanche Forecast

Mar 20th, 2017–Mar 21st, 2017
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
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate
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
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: South Coast.

Uncertainty exists with the freezing level in the coming days. Expect to see rain to mountain top except in the highest reaches of the south coast region.

Confidence

Moderate - Freezing levels are uncertain on Wednesday

Weather Forecast

TUESDAY: Rain, accumulation 25mm / Light to moderate southeast wind / Alpine temperature 6 / Freezing level 2100m WEDNESDAY: Periods of snow or rain, accumulation 23cm / Light to moderate south wind / Alpine temperature 3 / Freezing level 1500mTHURSDAY: Mix of sun and cloud / Light to moderate southeast wind / Alpine temperature 3 / Freezing level 1300m

Avalanche Summary

No recent avalanches have been reported in the region. Expect  thin loose wet avalanches in the alpine and tree line elevation bands in the coming days.

Snowpack Summary

Last weekend's storm delivered 20-30 cm of wet snow in alpine terrain and rain elsewhere. The wet snow has frozen and stabilized the snowpack in all but the highest terrain where isolated storm and or wind slabs may sit above a rain crust. High freezing level and continued precipitation over the coming days will start to break down the recent crust formation.

Avalanche Problems

Loose Wet

With rain to 1900m expected for Tuesday expect to see loose wet avalanches at all elevations. The expected size of avalanches will increase with elevation; the largest size range being higher in the alpine elevation band.
Watch for terrain traps where small amounts of snow will acumulate into deep deposits.Be alert to conditions that change with elevation.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 2