why was this town of Seine-et-Marne affected and not others?

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It was not the only one in France, but if the phenomenon was also observed in Côte-d'Or, in the Loiretor even in Essonne, it remains no less surprising.

Saturday December 28, 2024the town of Moissy-Cramayel (Seine-et-Marne) woke up under a light coat of snow which had not been announced by the forecasts of Weather France.

It must be said that the phenomenon was simply not predictable since it was not not natural snowbut many “industrial snow. »

“Industrial snow” is caused by human activities and the resulting pollution

This rare phenomenon, which has brought joy to the youngest, is “linked to the conjunction of winter weather conditions particular and to human activitiesnot taken into account in weather models,” explains Météo France.

Because “industrial snow” only occurs in the following conditions : ” The pollutionlinked to industries, circulation to heaterscomes to charge the ambient air withextra humidity but also small solid particles called condensation nuclei,” explains Météo France in a note dedicated to the phenomenon.

Par negative temperatureand in theabsence of wind ” the water vaporthen attaches to these nuclei, freezes and turns into snowcontinues the official meteorology and climatology service in France. This snow very finewhich falls under needle shape can greatly reduce visibility et falls locallyaround the 'polluted' area. »

No worries, however, this “industrial snow” does not represent no danger to health. He is simply not recommended to ingest it.

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