Cirrus clouds followed by cirrostratus then altostratus,stratus,and occasionally nimbostratus indicate the approach of a(n)().
Cumulus clouds that have undergone vertical development and have become cumulonimbus in form,indicate().
Cumulonimbus clouds are formed by().
Cumulonimbus clouds are formed by().
The dense black cumulonimbus clouds surrounding the eye of a hurricane are called().
Clouds are classified according to their().
A line of clouds,sharp changes in wind direction,and squalls are most frequently associated with a(n)().
All of the following are associated with cumulonimbus clouds EXCEPT().
Altocumulus clouds are defined as().
Cirrus clouds are composed primarily of().