Page last updated at 14:57 GMT, Tuesday, 2 March 2010

Five-star Severn Bore draws crowds in Gloucestershire


Surfers took to the Bristol Channel to catch the River Severn Bore

The largest River Severn bore in eight years has been surging through Gloucestershire.

Hundreds of people from across the UK lined the river banks to witness the spectacle.

The surge wave is caused by the incoming tide being funnelled up the narrowing Severn Estuary.

Scores of surfers tried to ride the five-star bore, which was caused by a tidal range of 5.4m (17.7ft) or more, as it headed upstream.

The Severn bore was expected to reach 2m (6.5ft) in height. The tidal range is the difference between low and high tide.

The Severn Estuary experiences the second highest tide anywhere in the world and the bore's average speed is 10mph.

Bores can range between one star, caused by a tidal range of 4.5m (14.8ft) to 4.6m (15ft), and five-star, caused by a tidal range of 5.4m (17.7ft) and above.

An Environment Agency spokeswoman said the last five-star Severn bore on record was in March 2002.

Print Sponsor

In pictures: Five star Severn Bore
02 Mar 10 |  Nature
Severn Bore filmed at Stonebench
01 Mar 10 |  Nature
Surfers prepare for the big bore
21 Aug 09 |  Gloucestershire
Spectators run from Severn Bore
11 Feb 09 |  Gloucestershire

The BBC is not responsible for the content of external internet sites

Has China's housing bubble burst?
How the world's oldest clove tree defied an empire
Why Royal Ballet principal Sergei Polunin quit


Americas Africa Europe Middle East South Asia Asia Pacific