fog
always changing shapes
usually bring drizzle or light falling snow
signal fair weather, but can turn into showers and thunderstorms
produce thunderstorms with lightning, hail, wind, or heavy rain
often seen in clear skies and mean fair weather
look thin, wispy, and feathery
looks like cotton: fluffy tops with dark bottms
tall, dark, and billowing
giant thunderhead clouds
highest cloud in the sky
overcast
made up of ice crystals
thick blanket of gray layers
