It’s spring-tide, meaning the moon is closest to the earth, so the tides are most violent. And there is a North-Western storm howling. Not a very powerful storm, about Bf9, but from the North-Western direction (full frontal on the coastline, and pushing up against the United Kingdom). And it will last for almost a full day. For the first time in 30 years, tonight full dike watch will be on throughout the entire coastal line. And the Oosterschelde storm surge barrier will be closed, and probably the Maesland barrier too, the two open dams.
These thingies are MASSIVE. Unless nature will seriously roar its head of course, but that will not happen tonight.
Added: All A-OK.