A nimbus cloud comes in the form of dark precipitous cloud. Nimbus is known as cloud or rain storm in the Latin language. The nimbostratus cloud or cumulonimbus cloud are also a part of the nimbus cloud.

Nimbus clouds are dark clouds as they carry huge quantity of water droplets with it enough to pour you with loads of shower. The water droplets pour down in various forms like rain, snow, hail and sleet.

Nimbus comes in union with other cloud types that bring in the huge precipitation enough to measure the height of the cloud. Nimbus clouds are spread in sky with uniform gray color.

Nimbostratus is a dense layer of cloud belonging to the low altitude, lying below 8000 ft (2400 m). Nimbostratus clouds obstruct sunlight and are known for its gray appearance. These clouds originate due to warm weather conditions.

While, cumulonimbus clouds are usually tall clouds which bring all thunderstorms and other intense weather conditions with it. These clouds form varied shapes starting from forming in clusters or staying in single compact mass. Cumulonimbus clouds are originated from cumulus clouds which can take the shape of a super cell or a severe thunderstorm.

Cumulonimbus clouds carry a lot of moisture and are a mass of unstable air with it. The clouds formations are usually near the front lines, close to the oceans where sea breezes bring along storm energy.