| A | B |
|---|
 | altocumulous fair weather clouds |
 | altostratus, may produce light rain |
 | high, icy clouds "fish scales" |
 | cirrostratus veil produces halo around Sun |
 | feathery cirrus clouds |
 | cumulonibus |
 | form from uneven surface heating |
 | Nimbostratus rain clouds |
 | stratocumulous |
 | stratus |
| produce thunderstorms, hail, lightning |
| can produce several inches of rain over few days |
| clouds of vertical development |
| unstable atmosphere clouds |
| often confused with airplane contrails |
