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Bookmark or Share- Fog Types - National Weather ServiceFog forms on top of the mountains. Valley Fog: Valley fog forms in the valley when the soil is moist from previous rainfall. As the skies clear solar energy exits earth and allow the temperature to cool near or at the dew point. This form deep fog, so dense it's sometimes called tule fog.
- Fog | Definition, Formation, Types, & Facts | BritannicaFog, cloud of small water droplets that is near ground level and sufficiently dense to reduce horizontal visibility to less than 1,000 metres (3,281 feet). The word fog also may refer to clouds of smoke particles, ice particles, or mixtures of these components.
- How Does Fog Form? | Weather.com - The Weather ChannelAverage days per year with dense fog (defined as reducing visibility to one-quarter mile or less) in the U.S. Areas with most frequent fog are shown in darker gray, red shading. (Image...
- How thick is the thickest fog? - BBC Science Focus MagazineFog can be a serious hazard for drivers, pilots and pedestrians, but how dense can it get? Find out what causes fog, how it is measured and what are the record-breaking levels of foggy conditions around the world. BBC Science Focus Magazine explores the science behind the thickest fog.
- Fog - WikipediaThe fog is dense enough to be illuminated by light that passes through gaps in a structure or tree, but thin enough to let a large quantity of that light pass through to illuminate points further on. As a result, object shadows appear as "beams" oriented in a direction parallel to the light source.
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