(meteorobs) What atmospheric phenomenon is this?

[geir oye]

Hello,
   
  This is not an observation of a meteor, but an atmospheric phenomen.
   
  What is this? I didn't see any clouds on the sky, but two cloud like objects appeared on the pictures. On two sequenced pictures (10 seconds between them). One showing a cloud, the other showing something looking like an expanding cloud.
   
  Pictures before and after shows no cloud/object in the same area. 
   
  Please, see my www site for more info: http://www.geocities.com/astrog2/atmosphere.htm
   
  Regards,
  Geir Øye

		
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