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

CL/M/H = X

Icon

Image

Description

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

CL = 0 No stratocumulus, stratus, cumulus or cumulonimbus
CL = 1 Cloud type symbol for cumulus humilis / cumulus fractus Cumulus humilis / cumulus fractus
CL = 2 Cloud type symbol for cumulus congestus (Towering cumulus "TCU") Image view Cumulus congestus (Towering cumulus "TCU") / cumulus mediocris
CL = 3 Cloud type symbol for cumulonimbus calvus Cumulonimbus calvus
CL = 4 Cloud type symbol for stratocumulus cumulogenitus Stratocumulus cumulogenitus
CL = 5 Cloud type symbol for stratocumulus Stratocumulus
CL = 6 Cloud type symbol for stratus nebulosus &/or stratus fractus Stratus nebulosus &/or stratus fractus
CL = 7 Cloud type symbol for stratus fractus or cumulus fractus &/or cumulus pannus Stratus fractus or cumulus fractus &/or cumulus pannus
CL = 8 Cloud type symbol for cumulus & stratocumulus Cumulus & stratocumulus
CL = 9 Cloud type symbol for cumulonimbus ("CB") Image view Cumulonimbus ("CB")

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

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

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

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