A little over 1,000 kilometers separated the center of Tropical Storm Parma from the center of Typhoon Melor on October 6, when the this composite image was taken.
Moving northwest toward southern China and Vietnam, the massive Typhoon Nesat covers most of the South China Sea in this photo-like satellite image from September 28, 2011.
Super-Typhoon Choi-wan had a symmetrical shape, a trait of a strong, well-organized cyclone, when this photo-like image was taken on September 16, 2009.
Though Typhoon Choi-wan maintains its tightly wound symmetric shape in this photo-like image from September 18, 2009, the striking clear eye of previous days is gone.