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an area of high air pressure that produces calm weather with very little wind
the place where a moving mass of cold air meets a mass of warm air. Cold fronts usually cause heavy rain and they sometimes cause thunder.
formal relating to a weather front
a line drawn on a weather map that connects places with the same air pressure
the front edge of a mass of warm air that brings warm weather when it moves into an area. The front edge of a mass of cold air is called a cold front.