Taking place on numerous occasions every year, The Severn Bore is an impressive tidal wave of water which works its way up the Severn Estuary over a distance of around 25 miles between Awre and Gloucester – attracting hosts of spectators, and scores of extreme sports enthusiasts, along the way.

The Severn Bore is caused by the tide from the Atlantic Ocean entering the Bristol Channel and forcing its way into the Severn Estuary, filtering into a narrow channel and causing the water to rise by anything up to 15 metres. The water reaches speeds of up to 20kmph as it nears Minsterworth and, as the width of the River Severn narrows, becomes held up causing the natural bore phenomenon.

Large bores with a tidal range of 4.9 to 5 metres are denoted by three stars; very large bores with a tidal range of 5.1 to 5.3 metres are denoted by four stars; while the rarest five-star bores have a tidal range above 5.4 metres.
The following lists Severn Bores rated four stars and above, drawing upon severn-bore.co.uk’s predictions for when The Severn Bore will take place in 2020.

Please note, times are approximate and can vary by as much as 30 minutes either way, and wearing waterproofs is also highly recommended.

Wednesday 11 March 2020
Minsterworth Church 9.08am; Stonebench 9.23am; and Over Bridge 9.43am.

Thursday 12 March 2020
Minsterworth Church 9.50am; Stonebench 10.05am; and Over Bridge at 10.45am.

Wednesday 8 April 2020
Minsterworth Church 9.05am; Stonebench 9.20am; and Over Bridge at 9.40am.

Thursday 9 April 2020
Minsterworth Church 9.47am; Stonebench 10.02am; and Over Bridge at 10.22am.

Friday 10 April 2020
Minsterworth Church 10.28am; Stonebench 10.43am; and Over Bridge at 11.03am.

Sunday 18 October 2020
Minsterworth Church 9.45am; Stonebench 10am; and Over Bridge at 10.20am.

https://www.severn-bore.co.uk/