© Amarbileg Shajbalidir

Sainshand, Mongolia

Latitude: 44° 53' 58'' N

Longitude: 110° 7' 42'' E

27 October 2015 1104 (Local Time)
Camera direction: towards NE

Image P/S code: P.9.4

Image I.D.: 4756

C_L = 1, C_M = 0, C_H = 0

• Images & related info Other Images Images of 1987 edition
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  Cumulus fractus

  The photograph shows small detached shreds of Cumulus cloud. It is identified as the species fractus due to the very ragged, fuzzy and indistinct edges at 1 and 2. The cloud shapes and outlines undergo continual changes that can be quite rapid. In the distance, a few Cumulus humilis can be seen at 3 and 4; the edges are more distinct, the  bases are horizontal and the cloud is of small vertical extent with a flattened appearance.  

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  © Amarbileg Shajbalidir
  Sainshand, Mongolia
  Latitude: 44° 53' 58'' N
  Longitude: 110° 7' 42'' E
  27 October 2015 1104 (Local Time)
  
  
  Camera direction: towards NE
  C_L = 1, C_M = 0, C_H = 0
  Image P/S code: P.9.4
  Image I.D.: 4756
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  Cumulus humilis and fractus

  Cumulus are detached clouds, generally dense and with sharp outlines, developing vertically in the form of rising mounds, domes or towers, with mostly brilliant white sunlit parts. In this photograph, we see two species of Cumulus. Towards the top of the image (nearer the camera), the cloud has the ragged, irregular edges of Cumulus fractus, the outlines of which usually change quickly and constantly. These are most likely the initial stages of the development of Cumulus. In the distance we note cloud with sharp outlines, of very limited vertical growth and seemingly flattened; this defines Cumulus humilis.

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  © Amran Rajabu Msonga
  Dodoma, United Republic of Tanzania
  Latitude: 6° 12' 35'' S
  Longitude: 35° 45' 18'' E
  30 June 2016 1302 (Local Time)
  
  
  Camera direction: towards SW
  C_L = 1, C_M = 0, C_H = 0
  Image P/S code: S.9.4 2
  Image I.D.: 4980
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  Cumulus fractus

  This image shows small detached Cumulus clouds on a breezy day on the coast of Cornwall, UK. The ragged and indistinct edges of the cloud at 1 and 2 identify the species as fractus. When viewed looking away from the Sun, as in this case, fractus has a bright white appearance. The shapes and outlines of fractus undergo continual changes that can be quite rapid.

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  © Stephen Burt
  Portreath, Cornwall, United Kingdom of Great Britain and Northern Ireland
  Latitude: 50° 15' 42'' N
  Longitude: 5° 17' 24'' W
  09 August 2006 1438 (Local Time)
  
  
  Camera direction: towards N
  C_L = 1, C_M = 0, C_H = 0
  Image P/S code: S.9.4 2.1
  Image I.D.: 4983
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  Cumulus fractus

  This photograph shows the initial phase of formation of Cumulus fractus. It is an excellent example of water vapour condensing and almost immediately evaporating. The small water droplets are visible long enough to appear as a nebulous milky sheen at 1 and 2. Two small white spots at 3 and 4 are the first sign that a cloud is forming; it is probably the beginning of Cumulus humilis.

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  © Ger Breman
  Elburg, Netherlands
  Latitude: 52° 26' 55'' N
  Longitude: 5° 49' 54'' E
  30 June 2015 1059 (Local Time)
  
  
  Camera direction: towards SE
  C_L = 1, C_M = 0, C_H = 0
  Image P/S code: S.9.4 1.1
  Image I.D.: 4992
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  Cumulis humilis and Cirrostratus

  This Cumulus humilis and fractus followed the cessation of daytime convective cloud within the north-east trades region in the Caribbean. Grand Anse Beach, Grenada at 1811 local time on 26 Sept 1978.

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  © Stephen Burt
  Grenada
  Latitude: 12° 0' 6'' N
  Longitude: 61° 47' 46'' W
  26 September 1978 1811 (Local Time)
  
  
  Camera direction: towards W
  C_L = 1, C_M = 0, C_H = 8
  Image P/S code: S.9.1 20
  Image I.D.: 5001
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  Cumulus fractus

  The photograph shows small detached shreds of Cumulus cloud trying to form in a post-cold front airstream that remained quite moist. The cloud edges are ragged and diffuse at 1, 2 and 3, identifying the species as fractus. The outline and shape of the Cumulus was constantly changing.

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  © Frank Le Blancq
  Jersey Airport, St Peter, Jersey
  Latitude: 49° 12' 25'' N
  Longitude: 2° 11' 51'' W
  30 May 2011 2057 (Local Time)
  
  
  Camera direction: towards NW
  C_L = 1, C_M = 3, C_H = 0
  Image P/S code: S.9.4
  Image I.D.: 5183
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  Cumulus humilis and Cumulus fractus

  Most of these clouds are typical Cumulus humilis. They have distinct horizontal bases, generally shaded; their outlines are not very ragged, their tops are flattened as a whole and only slightly rounded in places. There are some Cumulus fractus at 1 and 2. 

  The sky was observed in the western portion of a weak anticyclone which covered Finland and Sweden.

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  © T. Bergeron
  Ånn, Sweden
  Latitude: 63° 19' 32'' N
  Longitude: 12° 32' 5'' E
  14 July 1950 1000 (Local Time)
  
  
  Camera direction: towards SE
  C_L = 1, C_M = 0, C_H = 0