One of the mysteries of the English language finally explained.
The boundary of an advancing mass of cold air, in particular the trailing edge of the warm sector of a low-pressure system.
- ‘A cold front is the boundary between cool and warm air when the cool air is replacing the warm air.’
- ‘The weather man tells me all about high pressure and low pressure, about wind direction, cold fronts, warm fronts and all that.’
- ‘The subtropical highs move from west to east across southern Australia in winter, and further south in summer, usually separated by low pressure troughs or cold fronts.’
- ‘Although cold fronts associated with southern low pressure systems penetrate the ridge from time to time during summer, they generally fail to produce much useful rain.’
- ‘Rain is the precipitation of condensed water vapor caused when a warm front meets a cold front in the upper atmosphere.’
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