When strong wind blows over a mountain, large-scale "standing waves"/fjällvågor/fjellbølger may form on the downwind side - a phenomenon that may be problematic for airplanes since it creates a lot of turbulence.
If the temperature of the "standing wave" drops to the dew point, moisture in the air may condensate to form these spectacular clouds, called lenticular clouds, and today (17 December) these clouds, with the scientific name Altocumulus lenticularis (linsmoln/linseskyer) could be seen over large parts of the county Troms and Finnmark.
Så flotte skyer da. Her har naturen tatt malerpenselen i bruk. Flotte bilder.
SvaraRadera