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Weather Events Research Assignment

Smith Arnolds

on 3 June 2010

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Transcript of Fog

Fog Fog is formed when air is cooled to the point where it can't hold all the water vapor it contains. This results in condensed water droplets, which form fog. Fog can form almost anywhere! Some places get more fog than others. Take a look at Point Reyes, CA, the foggiest place in the U.S., with over 200 days of fog a year! All you need is water! There are many different types of fog. They are categorized by what forms the fog.
A few main types of fog are:

Radiation Fog
Evaporation Fog
Advection Fog
At night, radiation cools the ground. The cold surface cools the air above it, producing condensed water droplets, forming fog. When cold air moves above warm water, the water will evaporate into the air, forming fog. When warm moist air is blown above a cold surface, like ice or snow, it forms fog. Fog can form in any season, but it is most common in fall. This is because the long nights allow the ground to become colder. But wait... There's more!

There is sea fog, ground fog, precipitation fog, upslope fog, valley fog, ice fog, freezing fog, and artificial fog!

There are as many types of fog as there are cloud formations! And you thought fog wasn't dangerous...
Fortunately, accidents like that can be avoided. Here are some safety tips when fog is around.

Check the local dewpoint level from your local weather center before you leave home. Fog can't form if there isn't a high dewpoint level.

Be very cautious when driving in lowland areas near water when fog is likely to occur. Now you know what there is to know about...
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