A Nimbostratus is a cloud of the class characterized by a formless layer that is almost uniformly dark gray; it is a rain cloud of the layer type, of low altitude, usually below 8000 ft (2400 m). Compare nimbostratus clouds with stratus, altostratus and cirrostratus.

Other typical precipitation bearing clouds are cumulonimbus.

External links

• National Science Digital Library - Nimbostratus (http://www.nsdl.arm.gov/Library/glossary.shtml#Nimbostratus)

nl:nimbostratus