| Topic: | Re:Re:Re:Re:Re:Re:Flood alerts issued as Thames rises due to 'spring tides' | |
| Posted by: | James Roy | |
| Date/Time: | 29/06/21 10:51:00 |
| The height of Mean High Water Springs ( MHWS ) is the average throughout the year, of two successive high waters, during a 24-hour period in each month when the range of the tide is at its greatest (Spring tides). The king tide is the highest predicted high tide of the year at a coastal location. ... King tides are a normal occurrence once or twice every year in coastal areas. ... King tides occur when the orbits and alignment of the Earth, moon, and sun combine to produce the greatest tidal effects of the year. A northerly gale in the North Sea will compound the effects, but then the Thames Barrier will be lowered to protect London from flooding |