what environmental conditions create fog ?

Answer 1

When the dew point and temperature is within 5 degrees F or 3degrees C of each other.

Answer 2

Fog Conditions

Answer 3

When the humidity is high enough or moist enough and the ground temperature is cool with very little wind. You must have a calm night for fog to form.

Fog can also form in valleys because the dew point reaches a high enough point (saturation) to make the air dense and cause water droplets in the air which is fog, (a low cloud near the surface of the earth.)

The principle is warm moist area rising over cool ground forming dense air, thereby creating fog.

Answer 4

Fog is a cloud in contact with the ground. Fog differs from other clouds only in that fog touches the surface of the Earth. The same cloud that is not fog on lower ground may be fog where it contacts higher ground such as hilltops or mountain ridges. Fog is distinct from mist only in its density. Fog is defined as cloud which reduces visibility to less than 1 km, whereas mist is that which reduces visibility to less than 2 km.

The foggiest place in the world is the Grand Banks off the island of Newfoundland, Canada. Fog is frequent there as the Grand Banks is the meeting place of the cold Labrador Current from the north and the much warmer Gulf Stream from the south. The foggiest land areas in the world are Point Reyes, California, and Argentia, Newfoundland and Labrador, both with over 200 foggy days a year.

Answer 5

Fog is formed (1) when the temperature is reduced below the dew point temperature or (2) when moisture is added to air until condensation takes place.
To bring down the air temperature to the dew point temperature,the air has to be cooled.Loss of heat by radiation of energy into space causes this cooling.This cooling is responsible for the formation of fog.
Hence the following conditions are required for the formation of fog
(1)Clear sky,(2)Presence of sufficient moisture in the air(3)light wind so that fog will not be carried away and (4) ground inversion which also contributes to its formation.

Answer 6

high humidity mixed with falling temps creates fog. the higher the temperature of the air the more moisture it can hold as vapor. as the temperature falls some of the vapor must condense to liquid and fog is created. the cold air falls into the lowest altitude areas therefore fog is most often found here first.

Answer 7

There are two main conditions that cause fog
1st: When the air cools to its dew point
2nd: when the Dew point is raised to the air temp. within 5 deG. F of one another
Dew point refers to the temperature at which air must be cooled to for saturation to form and froduce a cloud or Fog.

Answer 8

Fog forms mm, when the atmosphere is saturated. While the temperature tells you how much water vapor the air can hold, the dewpoint temperature tells you how much water vapor the air does hold. So at night when the temperature drops until it reaches the dew point the air reaches saturation and can hold no more water vapor and so the water vapor condenses and becomes the small water droplets of fog.