Sky Watcher Chart

Sky Watcher Chart thumbnail H1 clouds - Filaments of Ci H2 clouds - Dense Ci in patches H3 clouds - Anvil shaped Dense Ci H4 clouds - Hooked shaped Ci H5 clouds - Cs not reaching 45° altitude H6 clouds - Cs exceeding 45° altitude H7 clouds - Veil of Cs H8 clouds - Cs not increasing or covering entire sky H9 clouds - Cc alone or main cirriform cloud M1 clouds - Thin As M2 clouds - Thick As covering the sun or moon, or Ns M3 clouds - Thin Ac at single level M4 clouds - Thin Ac in patches M5 clouds - Thin Ac in bands usually thickening M6 clouds - Ac from spreading Cu or Cb M7 clouds - Double layered or thick Ac or Ac with As and/or Ns M8 clouds - Ac in form of Cu-shaped turrets M9 clouds - Ac of a chaotic sky, usually at different levels L1 clouds - Cu of fair weather L2 clouds - Cu of considerable development L3 clouds - Cb with tops lacking clear-cut outlines L4 clouds - Sc formed from spreading Cu - bases at same level L5 clouds - Sc NOT formed from Cu L6 clouds - St or StFra (stratus fractus) but with no bad weather L7 clouds - StFra and/or CuFra of bad weather L8 clouds - Cu and Sc with bases at different levels L9 clouds - Cb with cirriform top Cumulonimbus mamatus Tornadoes Wall Cloud Shelf Cloud Wave Clouds

L2 Clouds: Cumulus (Cu) of moderate/strong development

Cloud code


Cloud symbol
Symbol for L2 cloud
Cloud description
Cumulus of moderate or strong vertical extent, generally with protuberances in the form of domes or towers, either accompanied or not by other Cumulus or Stratocumulus, all having bases at the same level.
L2 cloud
Additional Views:
L2 cloud thumbnail
L2 cloud late in the day w/dense cirrus from Cb in the background
L2 cloud thumbnail
L2 cloud thumbnail

Notes: The outline of L2 clouds are usually clear cut, with horizontal bases and cauliflower shaped tops. Sunlit parts are mostly brilliant white, while bases are relatively dark. The clouds are sometimes arranged in lines, called cloud streets, nearly parallel to the wind direction. They may also form with tall towers that may be tilted by the wind. Showers can occur with these clouds but will not contain lightning and thunder.

Small Cumulus (L1) and Stratocumulus (L5) may also be present, all having their bases at the same level.

Click symbols (below) for more cloud types
  1 2 3 4 5 6 7 8 9
Symbol for H1 cloud Symbol for H2 cloud Symbol for H3 cloud Symbol for H4 cloud Symbol for H5 cloud Symbol for H6 cloud Symbol for H7 cloud Symbol for H8 cloud Symbol for H9 cloud
Symbol for M1 cloud Symbol for M2 cloud Symbol for M3 cloud Symbol for M4 cloud Symbol for M5 cloud Symbol for M6 cloud Symbol for M7 cloud Symbol for M8 cloud Symbol for M9 cloud
Symbol for L1 cloud Symbol for L2 cloud Symbol for L3 cloud Symbol for L4 cloud Symbol for L5 cloud Symbol for L6 cloud Symbol for L7 cloud Symbol for L8 cloud Symbol for L9 cloud

Back: Sky Watcher Chart