Tag Archives: Clouds

Why are the cloud streamers behind jets different sizes?

Posted on May 7, 2012 by Weather Guys Editor

The white condensation trails left behind jet aircraft are called contrails (condensation trails). Contrails usually form higher than 26,000 feet above the ground. Contrails form when hot, humid air from jet exhaust mixes with surrounding air of low water vapor content and low temperature. The clouds that form are similar to the cloud you see when you exhale in cold air and “see your breath.” Continue reading →

Category: Phenomena
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Why is Fog Usually Seen in the Morning?

Posted on September 26, 2011 by Weather Guys Editor

A fog is just a cloud at the ground. Fog formation can occur in two ways. First, the air is cooled to the dew point which leads to the formation of fog droplets. When the air temperature is the same as the dew point temperature, condensation occurs on tiny particles floating in the air. . . Continue reading →

Category: Meteorology
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How Much Condensed Liquid Water is in a Cubic Mile of Fog?

Posted on September 12, 2011 by Weather Guys Editor

Fog is composed of tiny water drops, each one with a diameter of about one-one thousandth (0.001) of an inch. They are small and fairly uniform in size. You also would find about one of these drops in each cubic inch of fog. . . Continue reading →

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Why are Some Clouds Whiter than Others?

Posted on August 29, 2011 by Weather Guys Editor

Clouds are made of small water drops and small ice crystals that scatter light from the sun in all directions. These individual drops and crystals are clear. It is the multitude of drops . . . Continue reading →

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