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   Fogbows over water

Sea or river fog is an excellent source of fogbows. The fog forms when air in contact with the cooler water is chilled. To see a fogbow the fog layer must be sufficiently thin that the sun shines through. George Howard (Gallery) captured this fogbow panorama from the sloop "Pandamonium"on the Columbia River, Washington State, USA. ©2004 George Howard
This bow is brightest at the two points where it looks closest to the sea. There the light path through the fog is longest. When searching for fogbows on land or at sea look first near to the horizon for one or two bright patches each side of a line facing away from the sun.