Avalanche Forecast

Issued: Nov 20th, 2012 9:41AM

The alpine rating is below threshold, the treeline rating is below threshold, and the below treeline rating is below threshold.

Avalanche Canada swerner, Avalanche Canada

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

3 - 13

Weather Forecast

A strong SW flow continues through Tuesday night into Wednesday. Ridgetop winds will continue to be strong from the SW through Wednesday, switching Westerly by Thursday. Light amounts of precipitation are expected tonight, with moderate amounts through Wednesday. Freezing levels will start to fall later tonight through the rest of the week. Alpine temperatures -7 Wednesday then falling to -13 Thursday. The arctic front moving south will influence a cooler, dryer, and clearer day on Thursday.

Avalanche Summary

No current avalanche observations have been submitted. I suspect there has been a natural cycle in the alpine and possible at treeline due to the current weather and conditions. If you and your friends have been out exploring and riding in the backcountry, and have some observations to share please send us an email to forecaster@avalanche.ca.

Snowpack Summary

Snowpack observations and information are limited, and conditions across the region are likely to vary. Early season forecasting generally relies heavily on the weather forecasts and actuals. In the alpine I suspect anywhere from 50-100 cm of snow. Storms slabs and wind slabs likely exist in alpine and treeline elevations. In adjacent regions an early November crust exists in alpine elevations, my guess is that you would also find this crust buried in the South Rockies.  Snow depths at treeline are roughly sitting around 30-50 cm in depth, and below treeline snow levels may still be below threshold.

Valid until: Nov 21st, 2012 2:00PM

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