An extreme coastal hazard for Germany is erosion of the coastline. According to a website about different climate changes, it is stated, "The German coastline is mainly shallow, i.e., marsh, dune, coast, while only approximately 11% of the coast is steep." The sand is not tightly compacted, therefore easily washed away by wave action on the beach.
After the 2004 Tsunami, Germany partnered with the effected to install proper warning systems. The group 'Economic and Social Commission for Asia and the Pacific' (ESCAP) was supported by Germany to provide better systems for warning of oncoming storms. Since Germany has the technology to support outside country's with warning systems, it is safe to assume that the country itself has systems in place to detect hazards for themselves.
http://www.climateadaptation.eu/germany/coastal-floods/
http://www.unescap.org/news/escap-and-germany-strengthen-partnership-early-warning-coastal-hazards
