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Below is a simple model of a cyclone with a cold front extending to the south from the center of low pressure and a warm front extending to the east ahead of the storm.
![]() At low levels, several air masses of distinctly different origin may be found in varying parts of the cyclone. The cold front marks the leading edge of a colder and drier air mass being wrapped southeastward by north-northwesterly winds behind the low.
![]() Clouds and precipitation usually develop along and ahead of the cold front as the colder air mass lifts the warm moist air ahead of it.
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