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This document analyses 51 national incident reports dealing with severe outages of electronic communication networks or services provided to ENISA and the European Commission under article 13a of the Framework Directive 2009/140/EC. It considers natural phenomena like storms, floods and heavy snow as a cause for long lasting incidents (45 hours on average) and thus having a big impact on the power supply of providers. It recalls that preventing incidents is the main goal of article 13a and points the absence of clear mapping from the incident reports to the security measures. It calls for incident reporting to include a pointer to the security measures that could have (or should have) prevented the incident in order to allow National Regulatory Authorities (NRAs) and the article 13a on an EU level to better understand how to prevent future incidents.