© Mila Zinkova

San Francisco, California, United States of America

Latitude: 37° 46' 37'' N

Longitude: 122° 30' 43'' W

26 March 2015 1931 (Local Time)
Camera direction: towards W

Image P/S code: S.11.1.1.4

Image I.D.: 5459

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  Sea fog with fluctus

  This view from San Francisco, California, USA, just after sunset, shows sea fog over the Pacific Ocean. On the fog top are curls or breaking waves known as Kelvin-Helmholtz waves (fluctus) (seen at 2 and 3).

  Sea fog is a type of advection fog and is formed when relatively warm, moist air moves over a cooler sea surface. The temperature of the air is cooled to saturation by contact with the cold surface.

  Fluctus is a relatively short-lived wave formation caused by wind shear across the top of the fog. 

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  © Mila Zinkova
  San Francisco, California, United States of America
  Latitude: 37° 46' 37'' N
  Longitude: 122° 30' 43'' W
  26 March 2015 1931 (Local Time)
  
  
  Camera direction: towards W
  Image P/S code: S.11.1.1.4
  Image I.D.: 5459