|
Cloud genera and selected species, supplementary features, and other airborne hydrometeors
|
|
| Extreme-level |
- Polar mesospheric cirriform type
- Noctilucent
|
|
| Very high-level |
- Polar stratospheric cirriform type
- Nacreous
|
|
| High-level |
- WMO genera
- Cirrostratus (Cs)
- Cirrocumulus (Cc)
- Cirrus (Ci)
- Special cirrus variants (non-WMO terminology)
- Cirrus Kelvin-Helmholtz
- Cirrus aviaticus (Contrail)
|
|
| Medium-level |
- WMO genera
- Altostratus (As)
- Altocumulus (Ac)
|
|
| Low-level |
- WMO genera
- Stratus (St)
- Stratocumulus (Sc)
- Species
- Fractus
- Special stratocumulus variants (non-WMO terminology)
- Actinoform cloud
- Undulatus asperatus
|
|
| Moderate vertical |
- WMO genera
- Nimbostratus (Ns)
- Cumulus (Cu)
- Supplementary features
- Cumulus Pileus
- Cumulus Arcus (Roll)
|
|
| Towering vertical |
- WMO genera
- Cumulonimbus (Cb)
- Cumulus congestus (species) (ICAO term Towering cumulus )
- WMO supplementary features
- Cumulonimbus mammatus
- Cumulonimbus tuba (Funnel cloud)
- Cumulonimbus Pileus
- Cumulonimbus Arcus (Shelf)
- Special variants (non-WMO terminology)
- Pyrocumulus
- Pyrocumulonimbus
- Cumulonimbus Wall cloud
- Cumulonimbus Overshooting top
|
|
| Surface based |
- General type
- Fog
|
|
| Non-height specific |
- General type
- Accessory cloud
|