Put briefly: Information, preparation, awareness. If your home address or your business lies within the area at risk, then you need to know all about the dangers, the warning channels and the escape routes out of the danger area. Prepare for emergencies by checking protection measures and escape routes on your own premises. Finally, in cases of acute danger, carefully follow the radio announcements or use the announcement services of the WADI and the City of Hamburg.Since 2011 it has also been possible to use the free SMS (text message) warning service of the Hamburg Ministry of the Interior and Sport. In this way you will immediately be aware of an exclusion zone or evacuation.