article_snippet: Spring tides - when the difference between low and high tide is greatest - happen twice a month when the earth, sun and moon align.
article_snippet: But this was even bigger than usual because of the recent supermoon - when the moon is as close to the earth as it can be - and the Spring Equinox.
article_snippet: Ian Brown from the coastguard said: ‘In my 24 years I've never seen the extremely low tide come back quite as quick as the extremely low tide did yesterday