© Tsz Cheung Lee

New Wan Chai Ferry Pier, Wan Chai, Hong Kong, China

Latitude: 22° 17' 2'' N

Longitude: 114° 10' 31'' E

15 December 2012 1455 (Local Time)
Camera direction: towards SSW

Image P/S code: P.7.11

Image I.D.: 5171

C_L = 8, C_M = /, C_H = /

• Images & related info Other Images Images of 1987 edition
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  Stratocumulus stratiformis opacus perlucidus undulatus radiatus and Cumulus fractus fluctus

  The long rolls (variety undulatus) in this extensive layer (species stratiformis) of Stratocumulus appear to be converging toward a point near the horizon (variety radiatus). Blue sky is visible directly above in very small gaps between the rolls (variety perlucidus). These small gaps also reveal the position of the Sun, but the rolls are sufficiently thick to mask it (variety opacus). 

  The small, scattered, greyer clouds are Cumulus fractus. They have ragged edges and most have slightly rounded tops. One of these clouds displays the supplementary feature fluctus (a curl or breaking wave) on its upper rear edge.

  Links in the image description will highlight features on the image. Mouse over the features for more detail.

  © Tsz Cheung Lee
  New Wan Chai Ferry Pier, Wan Chai, Hong Kong, China
  Latitude: 22° 17' 2'' N
  Longitude: 114° 10' 31'' E
  15 December 2012 1455 (Local Time)
  
  
  Camera direction: towards SSW
  C_L = 8, C_M = /, C_H = /
  Image P/S code: P.7.11
  Image I.D.: 5171
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  A shallow moist onshore airstream affected the coast of Guangdong, China on this day.

  © The Government of the Hong Kong Special Administrative Region
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  A layer of relative humidity greater than 90 %RH from 600 m to base of slight inversion (1.8 °C) at 1 400 m

  © The Government of the Hong Kong Special Administrative Region
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  Stratocumulus stratiformis opacus undulatus

  The sky is completely covered by a grey layer of cloud with some lighter parts, which is common with Stratocumulus stratiformis. The layer is thick enough that the Sun would not be visible, hence it is of the variety opacus. The cloud base exhibits undulations, indicating an additional variety: undulatus. The undulations are sufficiently exaggerated that they could possibly be classified as the supplementary feature asperitas

  Links in the image description will highlight features on the image. Mouse over the features for more detail.

  © Hernàn Palmisciano
  Caballito, Autonomous City of Buenos Aires, Argentina
  Latitude: 34° 37' 7'' S
  Longitude: 58° 25' 43'' W
  01 November 2014 1733 (Local Time)
  
  
  Camera direction: towards NW
  C_L = 5, C_M = /, C_H = /
  Image P/S code: S.7.11 1
  Image I.D.: 5486
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  Stratocumulus stratiformis opacus undulatus and lower Cumulus fractus

  This photograph shows a layer of fairly large and often grey elements of cloud that is typical of the genus Stratocumulus; it also has the relatively flat base associated with the species stratiformis. The cloud is also of the variety opacus as it is sufficiently opaque to completely mask the Sun. The most striking feature is the series of undulations, arranged in broadly parallel lines, which identify the additional variety undulatus. The undulations are transverse to the direction of the wind at cloud height. In the background are small amounts of Cumulus fractus of good weather with small rounded tops.

  Links in the image description will highlight features on the image. Mouse over the features for more detail.

  © Sung Lok Cheung
  Tin Shui Wai, Hong Kong, China
  Latitude: 22° 27' 38'' N
  Longitude: 114° 0' 15'' E
  27 January 2016 1201 (Local Time)
  
  
  Camera direction: towards NNW
  C_L = 8, C_M = /, C_H = /
  Image P/S code: S.7.11 2
  Image I.D.: 5829