The table above also mentions something called a dew-point temperature. We saw above that when a cold front comes through, the pressure and temperature both drop, the winds shift from a primarily southerly direction (coming out of the south) to a more westerly or northerly direction, and tall clouds form. An abrupt temperature change over a short distance is a good indicator that a front is located somewhere in between. In the map of surface temperatures above, the station east of the front reported a temperature of 54 degrees Fahrenheit while a short distance behind the front, the temperature decreased to 28 degrees. Notice the temperature change from one side of a cold front to the other. Below is a basic understanding of how a cold front is represented on a weather map. Now that we know about the symbol that represents a cold front, let´s look at how these symbols are used in weather forecasting! What do they look like in the real atmosphere and how are they represented on weather maps? Let´s start out simple and work our way up to a more complex understanding of fronts on weather maps. The line is represents the leading edge of the cooler air mass. The symbol that is used to identify a cold front on a weather map is a blue line with triangles that point in the direction in which the cold front is moving. How Cold Fronts are Used and Detected on Weather Maps Scattered showers followed by clearing conditionsĭecreasing clouds may occur based on the speed of the front Cumulus Wind direction begins to shift gusty winds Southwest to Southeast (Northern Hemisphere) Lowest decrease in pressure, then sudden increase
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