Storm tides of the North Sea

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 along the coast. The water level can rise to more than 5 metres (17 ft) above the normal tide.

The North Sea, especially the Netherlands, northern Germany and Denmark is particularly susceptible to storm tides. The coastline of the German Bight forms an L-shape facing northwest. Also vulnerable is the southern North Sea between England and the Netherlands, where the sea shallows and is funnelled between the land. For the protection of the low-lying areas along the coast, long and high dike systems have been built. Storm tides are a regular occurrence in these areas; usually, there are several storm tides each winter. Most of them do not cause significant damage.

The Danish coastline changed following the flood of 1825; the North Jutlandic Island got separated from the Jutland Peninsula.

The flood of 1976 and the "North Frisian Flood" of 1981 brought the highest water levels measured to date on the North Sea coast, but because of sea defences such as improved warning systems and dikes built and modified after the flood of 1962, these led only to property damage.

Munich Re Historical storm surge events.

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