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Neige industrielle

 Poster: A snowHead
Poster: A snowHead
I hadn't heard of this phenomenon until yesterday, when I read a Facebook post form Metro Alpes on the subject. As far as I understand it, "industrial snow" forms when there is a combination of high pollution levels, stagnant high pressure, temperatures below freezing and enough humidity. Pollution particles act as condensation nuclei, resulting in extremely localised snowfall which can't be forecast by weather models, usually around industrial plants or busy roads. Apparently it shouldn't be touched or consumed because - obviously - it contains high levels of pollution.

The article said it occurred in certain part of the Arve valley (near Geneva) yesterday. There is also a Wikipedia article on it (the French version is more detailed), with lots of examples from this dry January 2022 in France.

This morning we then encountered neige industrielle first hand, driving from Grenoble to Geneva. After an uneventful journey through not-very-thick fog, it suddenly started snowing moderately on a very short stretch of the autoroute around Annecy - enough to cover the road surface and surrounding countryside. But it was only about 500m before we returned to dry weather and a snowless landscape again.

Has anyone else experienced "neige industrielle"?
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 Obviously A snowHead isn't a real person
Obviously A snowHead isn't a real person
Quote:
Has anyone else experienced "neige industrielle"?
That's a new one for me.

Wonder what it skis like? wink
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 Well, the person's real but it's just a made up name, see?
Well, the person's real but it's just a made up name, see?
https://meteofrance.com/comprendre-la-meteo/precipitations/la-neige-industrielle
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mountainaddict wrote:
Quote:
Has anyone else experienced "neige industrielle"?
That's a new one for me.

Wonder what it skis like? wink


It’s very hard work Smile
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 Anyway, snowHeads is much more fun if you do.
Anyway, snowHeads is much more fun if you do.
denfinella wrote:


Has anyone else experienced "neige industrielle"?


Yes, Christmass (not new year) and early January here in Les Houches and Chamonix but only at the 700-1200m level. Everything covered in picture postcard rounded snow. None down valley or above 1200.
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 You'll need to Register first of course.
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Orange200 wrote:
mountainaddict wrote:
Wonder what it skis like? wink
It’s very hard work Smile


I can't work out whether that's a serious answer or a terrible pun Laughing
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