The Great Depression and a severe drought in the 1930s led to the Dust Bowl in the southern plains of the United States. Prolonged drought dried out the topsoil, which had also been depleted by earlier farming practices. Strong winds carried away the loose soil in massive dust storms, destroying crops and farmland. Many farmers lost their livelihoods and were forced to migrate west to California in search of work, though many found little opportunity when they arrived. By 1941 the drought had lifted, but the Dust Bowl had already caused widespread economic and social disruption across the plains states.