A terrible nightmare

It was a beautiful Saturday afternoon. I went to the swimming pool to have a sunbathe. The sun was shining in the shy.
I lay down the hammock and I dreamt that I was in a desert island of the Caribean sea.. In the beach of the island there weren't people.
The sea was quiet, but the sky, was completely grey. Five minutes later, started to rain and hail. I hid where I could but I couldn't do anything because the island disappears.
It was a terrible dream.