Weather officials say different types of clouds can tell you what kind of weather to expect. Here's a look at the different ...

They are mid-level clouds. This cloud forecasts continuous rain or snow ahead. Nimbostratus: Dark gray cloud layer diffused by falling rain or snow. It is thick enough to blot out the sun.

They were rain, the threat ... that seemed to exhibit a cloud population explosion with each of a countless number of clouds possessing their own shape and shade of gray. Laden with raindrops ...