Avalanche Forecast

Issued: Dec 12th, 2011 9:36AM

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

Avalanche Canada ghelgeson, Avalanche Canada

Summary

Confidence

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

Weather Forecast

Yesterday's ridge of high pressure slides to the south as a weak system approaches from the west. No precipitation is expected and winds remain light out of the W, NW. Expect a daytime high of -6 with an overnight low of -11 under mostly sunny skies. A system tracks just south of the area Wednesday night into Thursday bringing scattered flurries to the region. The tracking is pretty sketchy at this point, but I think we'll get at least 2-5cm of snow, maybe a few more if the system moves a bit further north. Stay tuned for more details.

Avalanche Summary

No significant recent avalanche activity has been reported. If you have any avalanche observations to report, please email us at: forecaster@avalanche.ca.

Snowpack Summary

On the surface, cold clear nights are generating some very significant surface hoar development. I'm hearing reports of SH varying in size from 3mm to as much as 40mm with an average around 12mm. Wow! It looks like we get a few dribs and drabs of snow next week which will likely preserve at least some of this surface hoar. It's too early to say where it will be a factor, but the writing is on the wall.Generally speaking, we're looking at a pretty bomber snowpack. Yes, there are some basal weaknesses on the ground but these are being well bridged by the strong mid-pack. Sure, there's a chance that you could activate these weaknesses in an area where the pack is going from thick to thin. (Steep terrain, especially near rock outcroppings.) But, the overall avalanche danger for the area is low. See the forecasters' blog for a heads up discussion on low danger.The alpine snowpack is 150-200 cm, dropping to treeline you'll find depths of 50-150cm.If you're out & about please drop me a line & let me know what you're seeing:forecaster@avalanche.ca

Valid until: Dec 13th, 2011 8:00AM

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