What are these spiral shapes created from clouds?

Alfa-Cronbach's ellipse
Fujita cyclones
periodic turbulence Torro
Kármán vortex street
When a cloud layer is present at the relevant altitude, the streets become visible. Such cloud layer vortex streets have been photographed from satellites. Kármán vortex street caused by wind flowing around the Juan Fernández Islands off the Chilean coast. It is named after the engineer and fluid dynamicist Theodore von Kármán.
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Alfa-Cronbach's ellipse
Fujita cyclones
periodic turbulence Torro
Kármán vortex street
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