Three images from the Moderate Resolution Imaging Spectroradiometer (MODIS) aboard NASA's Terra satellite were combined to create this image of the storm system. The images were captured on Jan. 31 at 10:30 a.m., 12:05 p.m., and 1:45 p.m. ET (15:30, 17:05, and 18:45 UTC). Diagonal lines across the image show the boundaries between the overpasses. White gaps are areas where the sensor did not collect data. The image has a resolution of one kilometer per pixel.