Cyclone Egon was a European windstorm that affected the north of France, Belgium and Germany during the night of Thursday 12 to Friday 13 January 2017.

It caused three deaths, widespread power outages, and wind damage and significant snowfall, primarily France and Germany, but also in the Benelux states, Austria and Switzerland.

[4] Egon formed “rather unexpectedly" as a secondary low on a cold front of Windstorm Dieter, before the depression began to deepen quite quickly as it headed for northern France.

[10] Strong winds from Egon pushed in a significant portion of the west rose window of Soissons Cathedral to the northeast of Paris.

Heavy snowfall covered much of the country and closed the roads, while the German Meteorological Service (DWD) indicated that some areas had received up to 30 cm (12 in) in a few hours, causing accidents.