Low-pressure storm system. Satellite image of a large low-pressure system approaching the U.S. East Coast on May 24, 2001. This true-color image from the Moderate-resolution Imaging Spectroradiometer (MODIS), flying aboard NASA's Terra satellite shows the storm while it was centered over Illinois, Iowa, and Missouri smoke plume from a large fire northeast of Steinhatchee, Florida. Direct broadcast stations receive data from MODIS as Terra flies overhead, enabling scientists to monitor regional meteorological and environmental conditions in near real time.