© Karlona Plskova

Jáchymov, Czech Republic

Latitude: 50° 23' 45'' N

Longitude: 12° 58' 5'' E

18 January 2016 1118 (Local Time)
Camera direction: towards SE

Image P/S code: S.7.23

Image I.D.: 4892

C_L = 4, C_M = 3, C_H = 0

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  Stratocumulus cumulogenitus homogenitus

  This photograph shows how rising thermals from the power plants Prunéřov, Tušimice and Počerady in the Czech Republic have generated Cumulus congestus homogenitus clouds at 1, 2 and 3. These clouds have spread out to form Stratocumulus under an inversion, at a height of about 2 500 m. As the Stratocumulus has formed by the spreading of Cumulus, the mother-cloud term cumulogenitus applies. Furthermore, as the clouds formed as a consequence of human activity, the name homogenitus also applies. This cloud is therefore Stratocumulus cumulogenitus homogenitus. There is a slight reduction of visibility on the horizon due to haze and, downwind from the chimneys, smoke resulting from additional particulate matter from the chimneys.

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  © Karlona Plskova
  Jáchymov, Czech Republic
  Latitude: 50° 23' 45'' N
  Longitude: 12° 58' 5'' E
  18 January 2016 1118 (Local Time)
  
  
  Camera direction: towards SE
  C_L = 4, C_M = 3, C_H = 0
  Image P/S code: S.7.23
  Image I.D.: 4892
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  An anticyclone dominated the weather over the Czech Republic.
  © Deutscher Wetterdienst
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  Stratocumulus cumulogenitus

  In this photograph, isolated Cumulus cells have reached an inversion, where the tops are spreading downwind as a layer of Stratocumulus cumulogenitus. The Cumulus cells can be regarded as intermediate between the species mediocris and congestus, but tend towards the former. The Stratocumulus layer was relatively thin and short-lived, lasting only 30 minutes after each Cumulus spread out upon reaching the inversion layer. The Cumulus cell on the right-hand edge is decaying from the base up. There is Cumulus fractus and mediocris low on the horizon. The area was under the influence of a strengthening anticyclone.

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  © Michael Bruhn
  Rosebud West, Victoria, Australia
  Latitude: 38° 21' 50'' S
  Longitude: 144° 52' 13'' E
  29 May 2014 1313 (Local Time)
  
  
  Camera direction: towards SW
  C_L = 4, C_M = 0, C_H = 0
  Image P/S code: P.7.23
  Image I.D.: 5841
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  Cumulus congestus flammagenitus

  A Cumulus congestus flammagenitus cloud is seen in this picture above a low-level layer of smoke. The cloud formed as a direct result of the convection of air above a wildfire.

  The wildfire, located near Potamissa in the Limassol District of Cyprus, was approximately 20 km away from where the picture was taken near the village of Kivides. The base of the cloud is partially obscured by smoke rising directly from the fire and by a layer of smoke spreading in the lower atmosphere. Other Cumulus clouds of natural origin, on the right of the picture, are partially hidden by smoke.

  The Cumulus flammagenitus cloud is identified as the species congestus by its relatively large extent, the resemblance of its bulging upper part to a cauliflower and the towers sprouting from the cloud top. Observation over time showed that these towers rose from the main body of the cloud only to dissipate in the dry atmosphere above. 

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  © George Anderson
  Kivides, Cyprus
  Latitude: 34° 45' 41'' N
  Longitude: 32° 50' 41'' E
  06 August 2007 1708 (Local Time)
  
  
  Camera direction: towards NNE
  C_L = 2, C_M = 0, C_H = 0
  Image P/S code: S.9.16 4
  Image I.D.: 4834