The Grote Mandrenke (pronounced [ɣroːtə mandrɛŋkə], Low Saxon for "Great Drowning of Men") was a North Sea storm surge which affected the British Isles, the Netherlands, northern Germany, and Schleswig around 16 January 1362, causing at minimum 25,000 deaths. The storm tide is also called the "Second St. Marcellus flood" because it occurred on 16 January, the feast day of St. Marcellus. The "First St. Marcellus flood", which drowned 36,000 people along the coasts of West Friesland and Groningen (today provinces in the north of the Netherlands), occurred on 16 January 1219.
As with that in 1953, the storm surge was no doubt created by the coincidence of Atlantic storms and high spring tides. It travelled down the North Sea, breaking up islands, making parts of the mainland into islands, and wiping out entire towns and districts, such as Rungholt on the island of Strand in North Frisia and Ravenser Odd in East Yorkshire. It may have been a last straw in the progressive destruction of the once-great Suffolk port of Dunwich.
This storm tide, along with others of like size in the 13th century and 14th century, played a part in the formation of the Zuiderzee, and was characteristic of the unsettled and changeable weather in northern Europe at the beginning of the Little Ice Age.
- Stephen Moss (2011-01-20). "Weatherwatch: The Grote Mandrenke". Guardian. Retrieved 2014-01-23.
- "Dunwich underwater images show 'Britain's Atlantis'". BBC. 2013-05-10. Retrieved 2014-01-23.
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