What is the main idea of the selection beware of the black blizzard

In the 1930s, the Great Plains region was ruined by drought and high winds. Across the Great Plains came upon these immense winds that threw soil over farmland and created blizzards of dust.

Black Sunday refers to a particularly severe dust storm that occurred on April 14, 1935, as part of the Dust Bowl.[1] It was one of the worst dust storms in American history and it caused immense economic and agricultural damage.[2] It is estimated to have displaced 300 million tons of topsoil from the prairie area in the US.[3]

On the afternoon of April 14, the residents of the Plains States were forced to take cover as a dust storm, or "black blizzard", blew through the region. The storm hit the Oklahoma Panhandle and Northwestern Oklahoma first, and moved south for the remainder of the day.[1] It hit Beaver around 4:00 p. m., Boise City around 5:15 p. m., and Amarillo, Texas, at 7:20 p. m.[1] The conditions were the most severe in the Oklahoma and Texas panhandles, but the storm's effects were felt in other surrounding areas.[1]