One of JMW Turner’s earliest paintings rediscovered after 150 years

The Rising Squall, Hot Wells, from St. Vincent's Rock, Bristol is expected to fetch up to £300,000 when it is auctioned by Sotheby’s. Photograph: Sotheby's

An oil painting of a stormy Bristol landscape has been rediscovered as one of the earliest works of JMW Turner, created when the artist was 17 years old and lost to his canon for the past 150 years.

Turner’s signature on The Rising Squall, Hot Wells, from St Vincent’s Rock, Bristol was discovered in the process of cleaning the painting after it was sold last year.