Storm is a novella and picture book written by Kevin Crossley-Holland, illustrated by Alan Marks, and published by Heinemann in 1985. It was the first children's book for Marks.^[3] The story features modern cottagers near a marshland with a renowned ghost. The younger daughter must cross the marsh alone in a family emergency, with telephone service down during a storm,.^[4][5]

Crossley-Holland won the annual Carnegie Medal from the Library Association, recognising the year's outstanding children's book by a British author.^[6] For the 70th anniversary of the Medal in 2007, Storm was named one of the top ten winning works, selected by a panel to compose the ballot for a public election of the nation's favourite.^[7]

Barron's published a first US and Canadian edition in 1989, retaining the Marks illustrations.^[2]

"On a wild, stormy night, Annie is offered a ride by a tall, silent horseman. She overcomes her fear of the ghost who is said to haunt the lonely road and accepts the ride—but who is this mysterious stranger?" --library catalogue summary^[1][2]

"Annie knows the secrets of the great marsh. She's even heard about its ghost. On a terrible night, when Annie must brave the storm alone, not even she knows what to expect." --CILIP summary^[6]

In a capsule summary for the 70-year Carnegie celebration (2007), the British librarians recommend Storm for ages six and up. That is an audience two years younger than any others of the anniversary top ten; the recommendations range from ages 6+ to 14+.^[5]

Storm is a chapter book, a picture book whose text is considered primary. One recent publisher Egmont (2001)^[1] calls its so-called Bananas books "designed for independent reading" by early readers. The more advanced such as Storm are recommended for children making the transition from Key Stage 1 (the first two years of British primary education) to Key Stage 2.^[8]

During the 1970s and early 1980s there had been some discussion of the readership served by the Carnegie Medal; some children's librarians had expressed concern that it recognised books for teenage readers almost exclusively. Thus the award to Storm was seen as a move to redress the imbalance.^[9][10] Indeed, published in Heinemann's "Banana Book" line, Storm may be considered the first book for early readers to win the Carnegie Medal.

Despite the young audience, Storm is not a simple story. The language is deceptively simple: no difficult words are used but the effect is poetic and moving, and the ideas conveyed are anything but simple. Is it a ghost story? Is it a folk legend? Crossley-Holland is a folklore scholar and brings elements of the folk tale, and of the legends of the East Anglian country where he lived at the time, into this 42-page story of Annie and her adventure on a wild stormy night.