Cyclone Hergen was an intense European windstorm that moved Motion across Northern Europe during mid December 2011 .

Hergen was not the first storm to strike Attack Western Europe during the last week as Cyclone Friedhelm brought Bringing widespread damage Damaging and very strong winds on 8 December .

Hergen was followed by Joachim a few days later , then Oliver/Patrick ( Cato/Dagmar ) during the Christmas holiday .

In early to mid-December , Friedhelm , Hergen and Joachim hit Attack northern Europe .