You may have heard about the potential impact of so-called ‘super tides’ which are due from Saturday 28 September to Thursday 3 October. These tides are enhanced by the autumn equinox which this year fell on Monday, 23 September. The tides are governed by the gravitational pull of the moon and, to a lesser extent, the sun. Because the sun and moon go through different alignment, this affects the size of the tides.
I remember when I was young the big autumn spring tides seemed in some way magical as the tides used to come over the inner harbour wall and flood the town. Shops would board up their doors and place sand bags in ‘at risk’ areas to stop the rising waters getting into their properties. All the local kids would wade through the streets and in some cases row or scull their punts around the streets. Nowadays the new flood gate prevents this from happening but from time to time the high tides still come over the outer harbour walls.