A thick plume of desert dust (tan colored) was blowing eastward out of southern Egypt and Sudan, and out over the Red Sea on September 1, 2004. The dust is so thick in many places that it completely blocks the view of the surface.
This true-color scene was acquired by the Moderate Resolution Imaging Spectroradiometer (MODIS) aboard NASA’s Aqua satellite. The high-resolution image available here is 250 meters per pixel.
NASA image by Jesse Allen, Earth Observatory, using data courtesy MODIS Rapid Response Team