What is fog?

Fog is a condensed collection of water droplets and ice crystals near the Earth’s surface.

Fog is differentiated from clouds through both its height – clouds being significantly higher in the atmosphere – and how moisture has been generated, with the former acquiring it from local, ground-based sources such as rivers, oceans and marshes. As a general rule, fog reduces visibility to less than one kilometres (0.6 miles), while mist or haze is anywhere over that distance.

Typically, fog accumulates in low-lying areas of terrain such as valleys and plains, due to the increased moisture content and shelter from strong winds.

Fog can be very dangerous for all kinds of vehicles, often increasing the rate of accidents on our roads


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