Avalanche Forecast

Issued: Nov 22nd, 2012 8:57AM

The alpine rating is below threshold, the treeline rating is below threshold, and the below treeline rating is below threshold. Known problems include Storm Slabs and Persistent Slabs.

triley, Avalanche Canada

Cariboos.

This bulletin is based on limited data. Local variations in conditions are likely to exist. Check out the forecasters blog for further details on interpreting early season bulletins.

Summary

Confidence

Poor - Due to limited field observations for the entire period

Weather Forecast

Thursday Overnight: Increasing cloud with 5-7 mm precipitation. Freezing level near valley bottoms. Expecting -6.0 in the alpine. Winds light to moderate from the SW.Friday: Cloudy with 10-15 mm precipitation, some areas may see up to 30 cm at higher elevations. Freezing level rising to about 1100 metres during the precipitation and then descending to near valley bottoms, -5.0 in the alpine. Winds moderate from the SW.Saturday: Cooling trend behind the storm as High pressure moves into the region, freezing level at valley bottoms. Expect -10.0 in the alpine. Winds should clock to the NW. No precipitation expected.Sunday: Should still be under the influence of the High pressure. Cooler temps and light winds.

Avalanche Summary

We have not received any reports of avalanches from the region. Please send us an email if you have any observations.

Snowpack Summary

We don't have much hard information for this region. Reports suggest that there is more snow in the South of the region than there is in the North. The arctic air has moved into the North of the region, and may cause some surface hoar or near surface facetting.

Problems

Storm Slabs

The new storm snow and wind are expected to develop new slabs that may not bond well to old wind affected surfaces.

Be alert to conditions that change with elevation.>Use terrain features like ridges, benches, and knolls to reduce exposure to avalanches.>

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Possible - Likely

Expected Size

1 - 5

Persistent Slabs

There are reports that the early November crust is also in this region. There may not have been much snow on the ground except in the high alpine when this crust formed. The new storm load may cause this layer to become reactive.

Aspects: All aspects.

Elevations: Alpine.

Likelihood

Possible

Expected Size

1 - 5

Valid until: Nov 23rd, 2012 2:00PM