If you are looking for The dustbowl it is a giant duststorm covering the great plains. It started around '33 with a long drought and unending wind. It blew for ten years taking most of the topsoil with it until the plains looked more like the Sahara than farmland. No plants or animals or rain. The Okies left their foreclosed farms and went to the promised land in California to start a new life.
A dustbowl is sorta like a sand storm but it's shaped like a tornado.