7 major types of fog, the second one is mind blowing! (updated)

Seven (7) types of fog
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Fog and mist are clouds at ground level, which result from moisture condensation and they may extend far into the atmosphere. Fog and mist differ in visibility.

There are many types of fog and this article intends to provide a deep explanation and beautiful images related to various types of fog.

mist forms when moist air cools below the dew point, condensation takes place but resultant water droplets remain suspended in the air.

This causes a reduction in visibility to between one and two kilometers.

On the other hand, fog is like mist and forms in the same way but is much denser as it reduces visibility to less than a kilometer.

There are various types of fog depending on their mode of formation.

I hope by this simple introduction I have clarified the difference between mist and fog however the intention of this article is to provide and guide you in the understanding of various types of fog so do not lose focus on that.

the following are the major types of fog

Advection fog

this is caused by the movement of warm moist air over a cold land or water surface.

This results in condensation it is common in coastal areas.

Radiation fog

this occurs when the land surface is suddenly cooled by radiation where air upon it becomes chilled which results in condensation.

It is common in hilly areas.

frontal fog

this forms due to the passage of warm air over cold air.

The warm air is therefore chilled to form fog. It is formed when warm air is cooled from below as it rises over the cold air. it is usually formed in front of depression.

Steam fog

this form is comparatively rare, but it is included for meteorological interest. It is formed when cold air passes over a much warmer water surface so that water appears to steam.

As warmer water is cooled from above it appears to be steaming as the condensing water above it forms a fog. When temperatures are below freezing point, the water vapor is converted directly into ice crystals to form ice fog.

 Hill fog

this is simply a low sheet cloud that may envelop for example the hills.

It is formed by the cooling of a moist air stream advancing inland through the hills.

The middle latitude is liable to spells of hill fog at any time of the year during unsettled weather.

Smog fog

this is fog plus smoke and industrial pollutants like carbon dioxide, sulfur dioxide, and nitrogen dioxide. Smog is common in big industrial cities due to high emissions of pollutants as mentioned earlier. Examples of areas that experience smog fog include the Ruhr industrial area of Germany.


when a fog composed of supercooled droplets is driven by the slight wind against prominent objects such as telegraph poles wires and trees.

The drops freeze into them as rime.

The temperature of both droplets and of the objects is below the freezing point.

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