In section 2, the paper gives an overview of the wind power capacity in Germany and the German TSOs. Also introduced is the used wind power forecast and production data. In section 3, day ahead wind power forecast errors for 2012–2014 are evaluated in more detail and their connection to the underlying weather situation is investigated. The method of the developed cyclone detection algorithm is explained in section 4. The results are summarized in section 5, in which also the performance of a derived, automated weather information tool is presented. The conclusions of the paper can be found in section 6.