The amount of clouds over, or at, a given location Cloud conditions are expressed as cloud bases or ceiling, the amount of cover stated in eighths--1/8 to 4/8 described as scattered; 5/8 to 7/8, broken; and 8/8, overcast, and cloud tops Several layers of scattered clouds added together may result in a broken or overcast condition Low clouds impact many battlefield operations, especially the use of smart weapons