Every five seconds represents one mile. If the storm is a mile away, the lightning flash reaches you virtually instantaneously, but it takes about 5 seconds for the sound of the thunder to reach you. Another type of cumulus cloud is the altocumulus cloud, which sometimes resembles fish scales. They sometimes have dark, shadowed undersides. Altocumulus clouds Stratus clouds Stratus clouds are low clouds, ranging in height from near the earth's surface up to 6,500 feet.
Stratus clouds form flat layers or uniform sheets.
Only a fine drizzle can form from stratus clouds because there is no vertical development. Cloud images from Microsoft Clip Gallery Live.