@ Highlighter- The dust storms of the 1930s were certainly severe, but most modern storms in the United States are not so. The reason those storms were so severe is mostly due to the agriculture practices of the times. Soil management practices were poor, leading to severe desertification and soil erosion.
I live in the southwest, and we have a few dust storms a year, with maybe one or two reducing visibility to the point it is dangerous. However, if you travel half way around the world to Beijing you can experience the Yellow Dragon. The yellow Dragon is China's fifth season where the erosion of marginal lands bordering the Gobi creates sandstorms that can blanket a quarter million square miles and affect a quarter billion people. These sandstorms will blow across some of China's biggest cities over the Yellow Sea and into South Korea. These storms literally turn the sky a yellow-orange, and cause level five air pollution warnings across South East Asia.