Clouds in the atmosphere High Clouds Cirrus Thin clouds high in the atmosphere that were blown into strands by winds. Means a change in weather Cirrostratus Thin clouds that cover most the sky. Means rain or snow soon Cirrocumolus Thin sheet like clouds that sometimes look patchy or grainy.Means good but cold weather and might mean a hurricane in tropical regions. Altocumulos Mid Clouds Patchy white or gray and made of many fluffy rows. Made of liquid water but doesn't produce much rain. Means good weather. Altocstratus Blue or gray clouds that covers most of the sky. Means continous rain or snow Nimbostratus Very thick dark gray clouds. Means continouus rain snow Low clouds Cumulus Fluffy and white and comes in many different shapes. Means good weather. StratusThin and white clouds that cover the whole sky. Means good but gloomy weather. Cumulonimbus Forms when it is hot and wet. Usually means bad weather and maybe even tornados. Stratocumulus White or grey and sometimes in a honeycomb-like design. Means good weather but maybe a storm soon.