There’s a strange phenomenon that happens after rainfall in Devon – and it can stop baffled people in their tracks.

A tidal wave, spanning a large section of an estuary, is noticeable for two reasons: Not only is it a parting between waters of entirely different colour – but a ‘wave’ between them remains still and unmoving.

A rare natural still 'tidal wave' caused by heavy rain has been spotted on the Teign Estuary

A rare natural still ‘tidal wave’ caused by heavy rain has been spotted on the Teign Estuary (Image: APEX NEWS AND PICTURES)

The latest example of it happening was captured by Dee Ackland at the River Teign between Shaldon and Teignmouth.

 

The fresh muddy river water rushing down the estuary – caused by the week’s heavy rainfall – to the English Channel is held in place by the salty sea water.

Dee said: “There was a wave moving down river that spanned the whole width and bringing red water down with it.

“I’d never seen that before.”

The phenomenon sees the collision between the two water types form a ‘bubble’ that resembles a wave.

A rare natural still 'tidal wave' caused by heavy rain has been spotted on the Teign Estuary

A rare natural still ‘tidal wave’ caused by heavy rain has been spotted on the Teign Estuary (Image: APEX NEWS AND PICTURES)

The two waters will eventually mix and the estuary waters will return to a more recognisable colour.

The same phenomenon can also be seen at other estuaries  – most notably the red waters of The River Otter meeting the sea at Budleigh Salterton.

More rain is expected to fill up Devon rivers over the coming days.

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A Met Office yellow wind warning is in place for Devon and Cornwall for Friday, which could cause power cuts and disruption to public transport.

Tonight, it will rain through much of the evening, and into the early hours.

However, the wet weather will ease by dawn. It will become increasingly windy, with gales.

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