Fallstreak hole (punch hole cloud)
Taken by Fabio Rezzonico on October 26, 2013 @
Richterswil, Switzerland
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Camera Used: Sony Ericsson ST18i
Exposure Time: 10/20000
Aperture: f/2.4
ISO: 80
Date Taken: 2013:10:26 09:27:51
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Details:
A big impressive hole formed saturday morning in the sky above Richterswil, Switzerland. Punch hole clouds (a.k.a., fallstreak holes) are a quite rare phenomenon, in which a large elliptical gap can appear in stratocumuli when ice crystals forms abruptly (domino effect) after the supercooled water in the cloud has been exposed to ice nucleation particles.
Photographer's website:
No URL provided.
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