Major Cloud Groups and Types
		• High clouds – Cirrus (Ci) – Cirrostratus (Cs) – Cirrocummulus (Cc) • Middle clouds – Altostratus (As) – Altocummulus (Ac)		• Low clouds – Stratus (St) – Stratocummulus (Sc) – Nimbostratus • Clouds with vertical development – Cummulus (Cu) – Cummulonimbus (Cb)