Map from from 1649 with the shorelines of today's coast in red. Source: Wikipedia
The coast of North Frisia over the last nine centuries
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Northern Frisia
Storm surge events on the North Sea
12/26/838First documented storm surge in the North Sea; Approximately 2,500 deaths in what is now the Netherlands. 2/17/1164First Julian flood: 20,000 dead; First collapse of the Jade Bay, major damage in the Elbe area. 1/16/1219First Marcellus flood: 36,000 dead:...
Burchardi Flood or Grote Mendrenke
German annalist and farmer Peter Sax (1597 - 1662) wrote about the North Sea flood of October 11th 1634: „Um sechs Uhr am abend fing Gott der Herr aus dem Osten mit Wind und Regen zu wettern, um sieben wendete er den Wind nach dem Südwesten und ließ ihn so stark...