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Archived

Avalanche Forecast

Feb 9th, 2014–Feb 10th, 2014
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
4: High
The avalanche danger rating at treeline will be high
Below Treeline
3: Considerable
The avalanche danger rating below treeline will be considerable
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: Northwest Coastal.

You may be powder-starved, but mother nature is calling the shots with touchy, high consequence conditions expected for the forecast period. Conservative terrain selection will become critical.

Confidence

Fair - Timing, track, or intensity of incoming weather system is uncertain on Monday

Weather Forecast

The ridge of high pressure and the associated cold arctic air is on its way out giving way to a more zonal flow. A series of punchy systems will impact the Coast for the forecast period.Monday: Heavy snowfall / Moderate southwest winds / Freezing level at surfaceTuesday: Heavy snowfall / Strong southwest winds / Freezing level at surfaceWednesday: Moderate snowfall / Strong southwest winds / Freezing level at 300m

Avalanche Summary

No new avalanches were reported. I would expect touchy storm slab conditions with forecast weather over the next few days.

Snowpack Summary

A highly variable snow surface includes surface facets, patchy surface hoar, thin wind slabs, scoured crust, or any combination thereof. Once buried by the forecast storm snow, surface hoar or a thin layer of facets sitting on a hard surface will likely become a persistent weak layer.The mid and lower snowpack are generally strong and well-settled. Basal facets and depth hoar are likely to exist in some areas, but triggering is only a concern in thin and variable snowpack areas with large triggers.

Avalanche Problems

Storm Slabs

Forecast heavy snowfall will likely create a new and reactive storm slab. Due to freshly buried weak layers, touchy conditions may persist for a while. Watch for increased triggering in wind-affected terrain.
The new snow will require several days to settle and stabilize.>Stay off recent wind loaded areas until the slope has had a chance to stabilize.>Choose conservative lines and watch for clues of instability.>

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Likely

Expected Size: 1 - 4