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  1. How Fog Forms - National Weather Service

    Radiation fog varies in depth from 3 feet to about 1,000 feet and usually remains stationary. This type of fog can reduce visibility to near zero at times and make driving very hazardous. Valley …

  2. Fog - Wikipedia

    Fog is a visible aerosol consisting of tiny water droplets or ice crystals suspended in the air near the Earth 's surface. [1][2] Fog can be considered a type of low-lying cloud usually resembling …

  3. Fog | Definition, Formation, Types, & Facts | Britannica

    Sep 23, 2025 · Fog is formed by the condensation of water vapour on condensation nuclei that are always present in natural air. This results as soon as the relative humidity of the air …

  4. Fog - Definition, Types, Formation - Science Notes and Projects

    Oct 19, 2024 · Learn about fog in meteorology. Discover the definition, how and why fog forms, the different types, and how it differs from other phenomena.

  5. 6 Different Types of Fog - Farmers' Almanac

    Sep 30, 2025 · Who knew that there were so many different types of fog, each forming under different conditions? Learn about them here!

  6. FOG Definition & Meaning - Merriam-Webster

    The meaning of FOG is vapor condensed to fine particles of water suspended in the lower atmosphere that differs from cloud only in being near the ground. How to use fog in a sentence.

  7. The strange science of how fog forms

    Jan 16, 2025 · Fog is made up of molecules of water vapour, suspended in the air as tiny droplets of water but lingering close to the surface. Essentially, fog is just cloud that touches Earth’s …

  8. What is Fog? - Earth Networks

    Fog is a visible aerosol comprising tiny water droplets or ice crystals suspended in the air at or near the Earth’s surface. Nearby bodies of water, topography, and weather conditions are …

  9. What is freezing fog? Here's what's behind a first-of-its-kind

    The fog on Thursday morning prompted the National Weather Service in Pittsburgh to issue a freezing fog advisory for some counties where the temperature was at or below freezing.

  10. What are the different types of fog? - Met Office

    What are the different types of fog? Fogs which are mainly composed of water droplets are generally classified according to the physical process which produces saturation or near …