© Maximiliano Viale
Agua del Toro lake, Mendoza, Argentina
Latitude: 34° 34' 12'' S
Longitude: 69° 3' 0'' W
31 October 2016 1516 (Local Time)
Camera direction: towards W
Image P/S code: P.25.6
Image I.D.: 6085
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Foehn wall, foehn gap and lenticular cloud
This picture was taken from a location in Argentina to the east of the Andes mountain range during a foehn wind event, known locally as the Zonda wind. The image shows a foehn wall and, downstream, a foehn gap and lenticular cloud.
The foehn wall is a cloud formation which, during an episode of foehn winds, lies over and along a mountain ridge and which appears to an observer downwind from the mountains as a wall of cloud. The foehn wall marks the eastern limit of the cloud that exists over the windward side of the mountain range.
The foehn gap is a cloud-free area just downstream of the mountain ridge, between the cloud on the windward side of the mountain range and the lee wave lenticular clouds downstream on the lee side.
Also of note in the picture is blowing dust lifted by the warm, dry, strong downslope foehn (Zonda) wind.
Links in the image description will highlight features on the image. Mouse over the features for more detail.
© Maximiliano VialeAgua del Toro lake, Mendoza, ArgentinaLatitude: 34° 34' 12'' SLongitude: 69° 3' 0'' W31 October 2016 1516 (Local Time)Camera direction: towards WImage P/S code: P.25.6Image I.D.: 6085