Pablo Picasso. The tide comes in, and Picasso's masterpiece of sand art is washed away, as if it had never been there.
Some years later, Bradbury wrote a screenplay version of the story under the title The Picasso Summer - and under the pseudonym "Douglas Spaulding". He withdrew his name from the project because of the mess the film-makers had made of his simple tale. The only redeeming feature of the bizarre international co-production is a short sequence of animation inspired by Picasso (who was not involved with the film at all).
Today you can find the original short story in a couple of Bradbury books: A Medicine for Melancholy, The Day it Rained Forever and Twice 22 collect it under its original title; while The Stories of Ray Bradbury reprints it as "The Picasso Summer".
The reason I am blogging about "In a Season of Calm Weather" today is the remarkable sand art of Andres Amador. Below is just one of his pieces of ephemera - and there is plenty more, including videos and discussion of his techniques and collaborations on Andres' own blog, here.