© Stanley Sharp
Port Elizabeth Central, Port Elizabeth, 6001, South Africa
Latitude: 33° 57' 44'' S
Longitude: 25° 36' 45'' E
31 October 2015 1215 (Local Time)
Camera direction: towards E
Image P/S code: P.4.25
Image I.D.: 4743
CL = 1, CM = 5, CH = 2
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Altocumulus stratiformis translucidus perlucidus undulatus
This layer of Altocumulus is thin enough throughout to reveal the position of the Sun (variety translucidus). Numerous gaps between the elements also permit the sky to be seen (variety perlucidus). The presence of elongated elements, almost parallel to one another, indicates the variety undulatus. The layer was rapidly invading the sky from left to right. Cumulus humilis can be seen to the left and right of the tower block and a patch of Cirrus spissatus is evident above the horizon on the right-hand side.
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© Stanley SharpPort Elizabeth Central, Port Elizabeth, 6001, South AfricaLatitude: 33° 57' 44'' SLongitude: 25° 36' 45'' E31 October 2015 1215 (Local Time)Camera direction: towards ECL = 1, CM = 5, CH = 2Image P/S code: P.4.25Image I.D.: 4743
Upper air sounding has a thin layer of >85 %RH at about 5800m .
© University of Wyoming
Invading Altocumulus stratiformis translucidus perlucidus undulatus
This is an excellent example of a thin (variety translucidus) sheet (species stratiformis) of invading Altocumulus where the long rolls of merged elements (variety undulatus) are merging into a thick layer upwind.
Through the small gaps (variety perlucidus), thick patches of Cirrus (species spissatus) are visible.
A nearby upper-air sounding confirmed a relatively high Altocumulus base of 5 500 m (18 000 ft).
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© Tze Ching HoBenxi, Liaoning, ChinaLatitude: 41° 29' 32'' NLongitude: 123° 41' 23'' E29 September 2015 1635 (Local Time)CL = 0, CM = 5, CH = 2Image P/S code: P.4.11Image I.D.: 5642