Whens the best time to see the severns tidal waves?
What causes the bore? The bore is formed when the river rapidly decreases in width and depth. When the tide comes in, it forces large amounts of water into a very small space, which is then pushed upstream in a huge wave. Air pressure and wind strength and direction affect the height and timing of the bore. When can i see the severn bore? There are about 260 bores on the Severn each year, usually two a day on about 130 days a year, around the vernal and autumnal equinoxes (February to April and August to October). There are especially large bores on about 25 days a year, between 7am and noon, and between 7pm and midnight. Predicting big bores is difficult, but 8 and 9 of September and 7 October this year are good bets. A timetable can be found at www.severn-bore.co.uk. Is it unique? Lots of rivers have bores but the Severn Bore is one of the highest in the world. The tallest is on the Ch’ient’ang’kian, a river in China. How big is it? The bore can reach 10ft high in midstream and up to
