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Archived

Avalanche Forecast

Dec 11th, 2011–Dec 12th, 2011
Alpine
1: Low
The avalanche danger rating in the alpine will be low
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
1: Low
The avalanche danger rating in the alpine will be low
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: Kootenay Boundary.

Confidence

Good - -1

Weather Forecast

Lingering clouds will remain in the region before clearing around lunch time. Winds will be light and variable before lunch, switching to westerly in the afternoon. Temperatures remain mild @ 1500 m; expect a daytime high of -7 with an overnight low of -9. There's a chance we could see a little snow on Wednesday afternoon.

Avalanche Summary

No significant recent avalanche activity has been reported. If you have any avalanche observations to report, please email us at: [email protected].

Snowpack Summary

Great observations continue to come into the office.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:[email protected]

Avalanche Problems

Wind Slabs

These wind slabs are getting old & tired, but you may still find the odd rider trigerable wind slab in lee locations near ridgetop.

Aspects: All aspects.

Elevations: Alpine.

Likelihood: Possible

Expected Size: 1 - 2