Storm Dudley's weird and wonderful clouds

Mammatus clouds formed over parts of Scotland during Storm Dudley on Wednesday evening.

According to the Met Office, the unusual clouds with their pouches and bulges form in association with huge and unstable cumulonimbus clouds, which often bring heavy rain.

Mammatus comes from the Latin mamma which translates to "udder" or "breast".

Image source, carntsleep/大象传媒 Weather Watchers

Image caption, A view of the clouds from Clarkston in East Renfrewshire.

Image source, Feefeefifi/大象传媒 Weather Watchers

Image caption, The scene in Giffnock, East Renfrewshire, during Wednesday's stormy weather.

Image source, Celtic Captures/大象传媒 Weather Watchers

Image caption, A photograph of the clouds taken at Nine Mile Burn in Midlothian.

Image source, Diana B/大象传媒 Weather Watchers

Image caption, A picture taken in Glasgow, one of the places covered by an amber weather warning during Storm Dudley.

Image source, Karen Abbott

Image caption, The clouds are usually associated with cumulonimbus clouds.

Image source, Stevie Carenduff

Image caption, Clarkston enjoyed some of the best views of the cloud formations.

Image source, David Hendry

Image caption, In winter snow can form with mammatus clouds, according to the Met Office.

Image source, Monty/大象传媒 Weather Watchers

Image caption, A view of the clouds in Kilmacolm, Inverclyde.

Images all copyrighted.