BOOM! That was a thunder clap! What caused it? Clouds of course! There are many different types of clouds that sometimes say obvious signs and sometimes say not so obvious signs.
Low, lumpy clouds. He looks more threatening than he is; probably won’t bring rain
These guys consist of ice crystals and can form halos around the sun or moon.
Thin and wispy clouds; usually move from west to east and indicate fair weather; also known as Mare’s Tail
Appear at mid-level; color: blue or gray; sun or moon could shine through, but will look fuzzy; rain or snow coming; rain seldom falls from an Altostratus cloud
Gray patches with sharp edges; in the middle atmosphere; doesn’t indicate precipitation
Low cloud; vary from dark gray to white; can drizzle, freezing drizzle, or snow grains
Looks like cotton candy and balls of cotton!; white
Blocks the sun; dark; can precipitate but may be virga (evaporates before it reaches the ground)
Accompanied by smaller Cumulus clouds; most common a thunderstorm or intense precipitation
Small, rounded puffs that appear in long rows; usually white, but can be gray; rarely virga, could cross front so rain in about 10 hours; find him when wind changes direction
Watch for these wanted clouds and observed their actions and directions they move.