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Snoworks Course Diary Day 3 (Wednesday)

Snoworks Course Diary Day 3 (Wednesday)

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Started by Admin in France - 3 Replies

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Admin posted Dec-2018

Tignes, France, December 2018

Off-Piste Safety Session 3 (with Nick)

The previous day (Tuesday), we'd seen (the remains of) a number of small avalanches from high and steep slopes and had heard later that two of them had caught people - without serious injury. So the first topic of conversation, as every day on this course, was the latest avalanche information.

It appeared, on first news, that those caught by the avalanches had most likely triggered them themselves. And it also seemed clear that these slides (in addition to the ones we'd observed) had also occurred on precisely those slopes pointed out (e.g. by Henry's Avalanche) as being most dangerous early in the week - above 2,400m and steeper than 30 degrees.

Lesson Learned - Read the Avalanche Bulletin!

With that in mind, Nick led us to the Pisteurs hut at the top of Toviere for the latest information.

We did note, with a little disappointment, that the Meteo France avalanche bulletin pinned below the Piste Board was out of date and - indeed - there was no avalanche risk flag flying! Early season symptoms, no doubt, but less than optimal...


Here be knowledgeable, helpful folk!

The pisteurs, however, could not have been more accommodating and we were invited in for a quick introduction to their work and one of their most important colleagues...


Several detailed maps show areas liable to avalanche, blast points, and "safest routes" through off-piste sectors.

Amongst other interesting facts, we learnt that the avalanche control charges are set at 350 specific locations - and that, on a busy morning such as the day before, the piste safety team can work through around 200 of them!

If you're waiting for the lifts to open on a blasting day, spare a thought for these guys working hard in dangerous places, to keep you safe.

It was emphasised that the avalanche control (blasting) is done only to protect pistes and marked itinerary runs; off-piste areas are not generally controlled (exceptions being for the likes of freeride competitions).



Lesson Learned :- Introducing yourself to Monsieur Avalanche Dog will familiarise him with your scent so he digs you out first... maybe!

The rest of the session was spent working our way through the Val d'Isere side, including a traverse round to the Banane sector which had avalanched the day before.

Low-angled routes, with much discussion of slope, snow and exposure, were again the order of the day, and we finished with a run down through the trees to Le Fornet.



Lesson Learned :- focus on the gaps, not the trees, focus on the gaps, not the trees... thanks Alex!
The Admin Man

Ranchero_1979
reply to 'Snoworks Course Diary Day 3 (Wednesday) '
posted Dec-2018

Looks like a good day and few interesting points.
1) Is annoying on a big snow day how people sit in lift line grumbling about lifts not running at their normal start time.
2) I had kind of assumed that most of Europe has shifted completely to Gazex or similar deployed from helicopter vs. control charges.

Admin
reply to 'Snoworks Course Diary Day 3 (Wednesday) '
posted Dec-2018

Ranchero_1979 wrote:I had kind of assumed that most of Europe has shifted completely to Gazex or similar deployed from helicopter vs. control charges.

I don't think things will ever shift completely from one system to another; each has their pros and cons. Control charges can be placed very precisely in places you wouldn't want to be approaching with a helicopter.

The "350 specific locations" was news to me; guess I had a mental image of gnarly dudes with a snowmobile full of dynamite driving around blowing stuff up if it looks suspect... :lol: ... gnarly dudes they certainly are, but very organised and professional with it.

There are quite a few Gazex units across the Espace Killy but there must be many places where they'd be difficult to install and/or they're not required often enough to justify.
The Admin Man

Ranchero_1979
reply to 'Snoworks Course Diary Day 3 (Wednesday) '
posted Dec-2018

Makes sense. The 350 specific location was a different magnitude to what I had expected though. Presumably this is because every face can build cornice so protecting any given slope from above would require more than one go. Am pretty sure there is someone smart on here who could take a 'Fat Map'/GIS, integrate weather data (wind speed/direction/precipitation) and build them a pretty good model on where to blast. Or could just rely on experience of above mentioned mountain lady/man.

Topic last updated on 18-December-2018 at 13:45