5 Different Cloud Formations

Altostratus clouds typically ndicate humid, sunny weather. http://eo.ucar.edu/webweather/alto.html

Cumulonimbus clouds cause thunderstorms and intense weather. http://www.princeton.edu/~achaney/tmve/wiki100k/docs/Cumulonimbus_cloud.html

Cirrus clouds usually indicate fair, pleasant weather. http://eo.ucar.edu/webweather/cirrus.html

Cumulus clouds grow upward into cumulonimbus clouds over time and cause rain. http://eo.ucar.edu/webweather/cumulus.html

Stratus clouds don't usually cause rain, but it may drizzle.http://eo.ucar.edu/webweather/stratus.html

Altostratus

Cumulonimbus

Cirrus

Cumulus

Stratus

5 different cloud formations