Why did so many people migrate west from the Dust Bowl

In the 1930s, farmers from the Midwestern Dust Bowl states, especially Oklahoma and Arkansas, began to move to California; 250,000 arrived by 1940, including a third who moved into the San Joaquin Valley, which had a 1930 population of 540,000. During the 1930s, some 2.5 million people left the Plains states

to get away from it to get away from it