According to the Bulgarian disaster management framework, warning the population in case of disaster is provided via audible signalling devices (sirens), as well as via the Bulgarian National Television and Bulgarian National Radio. The public electronic media, including the operators distributing radio and television programmes with national coverage provide up-to-date information at any time of the day via direct reportages and broadcasts. The National Plan for Disaster Protection provides the messages to be broadcasted in English in order the foreign residents to be notified efficiently about the disaster situation. Messages distributed by the Bulgarian National Television, where possible, should be accompanied with sign language / translation.
Note: See source document for full reference.