There seems to be a strange progression in the times of High / Low Water at my port on certain days – can this be correct?
Often the key to explaining the seemingly illogical tabulated predictions lies in an investigation of the predicted tidal curve on the day(s) in question. It is often useful to display the predicted curve for just one day at a time in order to appreciate the issues involved. For example, certain ports exhibit a complex tidal regime, such as double High Waters (at Southampton) or double Low Waters (at Portland), or High / Low Water ‘stands’ where the predicted height of the water remains unchanged for a long period of time (at Invergordon). Furthermore, at Neap tides, (where the amount of tidal energy is reduced), very shallow predicted curves can occur making the turning points less precisely defined. I have noticed that the predictions for my port show consistently different heights of successive High Waters in a 24-hour period. Why is this? The cause of the difference in height between successive High (and indeed Low) Waters at any port is simply due to the diurnal inequality resulti
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- There seems to be a strange progression in the times of High / Low Water at my port on certain days - can this be correct?
