Avy Forecasters: How we see it...

AvyDaze

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I’m as excited as anyone to see new snow; however, a series of close calls have us worried. An early winter with above average snow depths mean it’s prime avalanche season, without much run-up. Here are some thoughts to help you plan your weekend. And pass it on to those who are pushing a little too hard:

• It’s storming in the mountains. Heavy snow, strong winds, and warming temperatures are rapidly increasing the likelihood of avalanches.
• It’s only November. That means young, soft snow that hasn’t had time to gain strength. It may look like mid-winter up high, but the snow is almost certainly not as good as it appears.
• We’re watching a crust layer that formed on Halloween. We don’t know much about it yet, but it has the makings of a persistent problem, especially in the South Rockies and the Purcell Mtns west of Golden and Invermere. This layer increases our concerns.
• Tuesday’s close call near Revelstoke saw an entire group caught and buried. Luckily two of the sledders were “only” partially buried. They were able to dig out their fully buried buddies, and get the one who wasn’t breathing going again. Read the account here. This is only the latest in a series of near misses.
• Popular areas that usually get totally compacted by heavy traffic have not seen much use yet. Avalanche conditions may be primed in these spots.

Here’s what I’m thinking as I make my plans:

• It’s possible to have fun on moderate terrain: don’t even think about big-lines, movie lines, or modern lines. Pick uniform terrain less than 30 degrees.
• Smooth slopes with deeper snow help you avoid trips to the ski shop, sled shop, or emergency department. Unfortunately, these same slopes (grassy, rock slabs, scree, etc) can slide with as little as 50 cm of snow which means avalanches are more likely. This is why it is important to stay on low angle slopes.
• Avoid hazards above you and terrain traps below.
• Manage your group: talk about your thinking, one-at-a-time on slopes, know your escape route, and only re-group in safe spots.
• Practice with your beacon and have a simulated rescue drill. If your buddies haven’t practiced – how are they going to dig you out?

Recognize this may be a short-term problem that helps in the long run. Choosing appropriate terrain for now might be the cost for great riding after it clears up, cools off, and the snow has time to strengthen. If you’re willing to think more than a week into the future, this stormy weather might be really good news!

ilya storm
forecaster@avalanche.ca
www.avalanche.ca
 

Summiteer

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This was sent to our club from Canadian Avalanche Center :

Dear Snowmobile Stakeholder,

The Canadian Avalanche Centre is asking our network of snowmobile collaborators to help us distribute avalanche safety information to mountain snowmobilers so that we can extend the reach of important avalanche safety information. Please feel free to forward, post and distribute this email as you see fit.
The 2009-10 season has been fairly safe from avalanche conditions up until now. This situation is changing as we move into the second half of the winter season. The month of January was not kind to the upper layers of the snowpack, and as new snow accumulates on top of the weak surfaces that were laid down during the last half of the month we are concerned that there will be more potential for avalanches and avalanche accidents through the end of the snow season.
The basic message we are trying to seed is that the snowpack has been forgiving up until now, but we are back to serious avalanche conditions that need to be respected.
Our advice to backcountry travellers is to be very aware of local avalanche conditions by consulting avalanche bulletins, talking to each other and keeping an eye out for signs of unstable snow. Talk with your group before you head out and discuss how you will match what you do with what the avalanche bulletin recommends on that day. You also need to practice good habits of backcountry travel, such as not stopping at the bottom of an avalanche slope, and riding one at a time in any avalanche terrain. Please also keep practicing with your rescue gear, just having a beacon, probe and shovel is not enough - you need a rescue practice.
I stress that the kind of snowpack and avalanches that we are experiencing are within the normal ups and downs that can be expected of winter in Western Canada. However, these normal ups and downs mean that avalanches cause more deaths than any other natural hazard in Canada. Please help us to reverse this deadly trend; most avalanche fatalities are preventable.
Here are some places where snowmobilers can get more information on avalanche safety:



Bulletins : Bulletins : Canadian Avalanche Centre : avalanche.ca

Overview : Training : Canadian Avalanche Centre : avalanche.ca

Sled : Community : Canadian Avalanche Centre : avalanche.ca

Home - Regional Discussion Forums

www.snowandmud.com --- avalanche safety forum

SnoWest Forum --- avalanche safety forum

ZacsTracs



toll free bulletin 1 800 667 1105

Canadian Avalanche Centre 1 250 837 2141



Thanks for helping us get the message out!



Regards,



John Kelly

Operations Manager,

Canadian Avalanche Centre
 
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