WMO classification of clouds トップページへモド
WMO "International Cloud Atlas Vol. I" (1956)による。
Genera Species Varieties Supplementary features and accessory clouds Mother-clouds

Genitus

Mutatus
Cirrus fibratus     intortus    mamma  Cirrocumulus   Cirrostratus
  uncinus radiatus   Altocumulus  
  spissatus vertebratus   Cumulonimbus  
  castellanus duplicatus      
  floccus        
Cirrocumulus stratiformis    undulatus  virga  / Cirrus  
  lenticularis lacunosus mamma   Cirrostratus
  castellanus       Altocumulus
  floccus        
Cirrostratus fibratus  duplicatus  / Cirrocumulus  Cirrus
  nebulosus undulatus   Cumulonimbus Cirrocumulus
          Altostratus
Altocumulus stratiformis    translucidus       virga  Cumulus  Cirrocumulus   
  lenticularis perlucidus mamma Cumulonimbus Altostratus
  castellanus opacus     Nimbostratus
  floccus duplicatus     Stratocumulus
    undulatus      
    radiatus      
    lacunosus      
Altostratus / translucidus     virga    Altocumulus  Cirrostratus 
    opacus praecipitatio Cumulonimbus Nimbostratus
    duplicatus pannus    
    undulatus mamma    
    radiatus      
Nimbostratus / / praecipitatio   Cumulus  Altocumulus  
      virga Cumulonimbus Altostratus
      pannus   Stratocumulus
Stratocumulus stratiformis   translucidus       mamma   Altostratus   Altocumulus  
  lenticularis perlucidus virga Nimbostratus Nimbostratus
  castellanus opacus praecipitatio Cumulus Stratus
    duplicatus   Cumulonimbus  
    undulatus      
    radiatus      
    lacunosus      
Stratus nebulosus  opacus   praecipitatio Nimbostratus   Stratocumulus
  fractus translucidus   Cumulus  
    undulatus   Cumulonimbus  
Cumulus humilis    radiatus pileus       Altocumulus  Stratocumulus 
  mediocris   velum Stratocumulus Stratus
  congestus   virga    
  fractus   praecipitatio    
      arcus    
      pannus    
      tuba    
Cumulonimbus calvus  / praecipitatio         Altocumulus     Cumulus
  capillatus   virga Altostratus  
      pannus Nimbostratus  
      incus Stratocumulus  
      mamma Cumulus  
      pileus    
      velum    
      arcus    
      tuba    
Remarks
1) リャク
2) Mother-clouds, other than those mentioned in the above table, may be observed, though seldom.
3) Species, varieties, supplementary features and accessory clouds are listed approximately in descending order of frequency of their occurrence; mother-clouds are listed in the same order as the genera.