A storm tide is a tide with a high flood period caused by a storm. Storm tides can be a severe danger to the coast and the people living at the coast. The water level can exceed more than 5 m above the normal tide.
Big storm tides were in
- 1362 (Groote Manndränke), which formed a great part of the wadden sea and caused the end of the city of Rungholt.
- 1634 when the Island of Strand broke into parts (Nordstrand (island)Nordstrand and Pellworm in Nordfriesland
- 1953 most severe in the Netherlands, leading to the North Sea Reclamation Works
- 1962 causing more than 270 victims in Hamburg.