© Kam Hoo Man
Yuen Long, Hong Kong, China
Latitude: 22° 26' 40'' N
Longitude: 114° 1' 20'' E
27 October 2015 1139 (Local Time)
Image P/S code: S.4.13
Image I.D.: 5739
CL = 0, CM = 4, CH = 0
This is an extensive sheet of thin Altocumulus showing more or less regularly distributed round holes, many of them with fringed edges. The cloud is coded as CM = 4 as the details of the cloud changed rapidly.
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The band of clouds covering the coast of Guangdong, China thinned out gradually that morning. The weather was generally fine over the region during the day.


This zoomed-in image is the first of two photos taken three minutes apart.
The cloud is Altocumulus translucidus lacunosus. Lacunosus is characterized by patches, sheets or layers in which there are somewhat regularly arranged round holes, many of which have fringed edges.
In this image, the patches are very thin and have very little moisture. The entrainment of drier environmental air is vigorously eroding the patches.
The cloud genus has been identified as Altocumulus based on observations from Hong Kong International Airport and the upper-air sounding from King's Park, Hong Kong (China).
The cloud is coded as CM = 4 due to its continually changing appearance.
Links in the image description will highlight features on the image. Mouse over the features for more detail.
This wide-angle image is the second of two photos taken three minutes apart. The cloud is Altocumulus translucidus lacunosus. Lacunosus is characterized by patches, sheets or layers in which there are somewhat regularly arranged round holes, many of which have fringed edges. In this image, the patches have thinned, creating large asymmetrical gaps.
The cloud genus has been identified as Altocumulus based on observations from Hong Kong International Airport and the upper-air sounding from King's Park, Hong Kong (China).
The cloud is coded as CM = 4 due to its continually changing appearance.
Links in the image description will highlight features on the image. Mouse over the features for more detail.