December 14 is the anniversary of one of Europe's greatest natural disasters. On this day in 1287 a storm tide in the North Sea breached the dike and flooded the area surrounding the Zuider Zee. Certainly more than 50,000 people were killed, and possibly as many as 80,000. The city Griend was almost completely wiped out and much land area became permanently possessed by the sea. This disaster is referred to as St. Lucia's flood, as it occured the day after St. Lucia's Day.
Much of Northern Europe was affected by the storm.