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  1. Meteopool
  2. Weather encyclopedia
  3. Cloud types and symbols according to WMO

CL/M/H = X

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Image

Description

CL - Low cloud type (stratocumulus, stratus, cumulus and cumulonimbus)

CL = 0No stratocumulus, stratus, cumulus or cumulonimbus
CL = 1Cloud type symbol for cumulus humilis / cumulus fractusCumulus humilis / cumulus fractus
CL = 2Cloud type symbol for cumulus congestus (Towering cumulus "TCU")Image viewCumulus congestus (Towering cumulus "TCU") / cumulus mediocris
CL = 3Cloud type symbol for cumulonimbus calvusCumulonimbus calvus
CL = 4Cloud type symbol for stratocumulus cumulogenitusStratocumulus cumulogenitus
CL = 5Cloud type symbol for stratocumulusStratocumulus
CL = 6Cloud type symbol for stratus nebulosus &/or stratus fractusStratus nebulosus &/or stratus fractus
CL = 7Cloud type symbol for stratus fractus or cumulus fractus &/or cumulus pannusStratus fractus or cumulus fractus &/or cumulus pannus
CL = 8Cloud type symbol for cumulus & stratocumulusCumulus & stratocumulus
CL = 9Cloud type symbol for cumulonimbus ("CB")Image viewCumulonimbus ("CB")

CM - Medium cloud type (Altocumulus, Altostratus, Nimbostratus)

CM = 0No altocumulus, altostratus or nimbostratus
CM = 1Cloud type symbol for altostratus translucidusAltostratus translucidus
CM = 2Cloud type symbol for altostratus opacus or nimbostratusAltostratus opacus or nimbostratus
CM = 3Cloud type symbol for altocumulus translucidusAltocumulus translucidus
CM = 4Cloud type symbol for altocumulus (lenticularis) translucidusAltocumulus (lenticularis) translucidus
CM = 5Cloud type symbol for altocumulus (stratiformis) perlucidus / translucidus radiatus (undulatus) or opacusAltocumulus (stratiformis) perlucidus / translucidus radiatus (undulatus) or opacus
CM = 6Cloud type symbol for altocumulus cumulogenitus or altocumulus cumulonimbogenitusAltocumulus cumulogenitus or altocumulus cumulonimbogenitus
CM = 7Cloud type symbol for Altocumulus (duplicatus) opacus / translucidus, possibly with altostratus or NimbostratusAltocumulus (duplicatus) opacus / translucidus, possibly with altostratus or nimbostratus
CM = 8Cloud type symbol for altocumulus castellanus or altocumulus floccusAltocumulus castellanus or altocumulus floccus
CM = 9Cloud type symbol for altocumulus of a chaotic sky, generally at several levelsAltocumulus of a chaotic sky, generally at several levels

CH - High cloud type (cirrus, cirrostratus, cirrocumulus)

CH = 0No cirrus, cirrocumulus or cirrostratus clouds
CH = 1Cloud type symbol for cirrus fibratus & possibly cirrus uncinusCirrus fibratus & possibly cirrus uncinus
CH = 2Cloud type symbol for cirrus spissatus, castellanus or floccus, not cumulonimbogenitusCirrus spissatus, castellanus or floccus, not cumulonimbogenitus
CH = 3Cloud type symbol for cirrus spissatus cumulonimbogenitusCirrus spissatus cumulonimbogenitus
CH = 4Cloud type symbol for generally becoming denser cirrus uncinus &/or fibratusGenerally becoming denser cirrus uncinus &/or fibratus
CH = 5Cloud type symbol for cirrostratus and possibly cirrus (radiatus) below 45 degrees above the horizon and becoming denserCirrostratus and possibly cirrus (radiatus) below 45 degrees above the horizon and becoming denser
CH = 6Cloud type symbol for cirrostratus and possibly cirrus (radiatus) above 45 degrees above the horizon and becoming denserCirrostratus and possibly cirrus (radiatus) above 45 degrees above the horizon and becoming denser
CH = 7Cloud type symbol for cirrostratus covering the celestial dome, possibly with cirrus and cirrocumulusCirrostratus covering the celestial dome, possibly with cirrus and cirrocumulus
CH = 8Cloud type symbol for cirrostratus, not progressively invading the sky, possibly with cirrus and cirrocumulusCirrostratus, not progressively invading the sky, possibly with cirrus and cirrocumulus
CH = 9Cloud type symbol for cirrocumulus (undulatus), possibly with cirrus and cirrostratusCirrocumulus (undulatus), possibly with cirrus and cirrostratus