On a weather map, a cold front is drawn with a blue line and blue triangles to show the boundary between two air masses. Northwest winds carry colder and drier air into an area and replace a warmer air mass. As the cold front moves forward, it pushes under the …

Locating and drawing in the cold front. We should double check the front location using some of the other weather changes (wind shift, dew point, pressure change etc.) that precede and follow a cold front. The air ahead of the front (Pts. B & C) is warm, moist, has winds blowing from the S or SW, and the pressure is falling.

Cold fronts, marked by a chain of blue triangles pointing in the direction of movement (toward the warmer air), often mark the boundary between a maritime-Tropical (mT) and an advancing continental-Polar (cP) air mass or perhaps the boundary between a cP air mass and an advancing continental-Arctic (cA) air mass (the coldest of the cold).

2025年1月13日 · Cold fronts are marked with a blue line and blue triangles pointing in the direction in which the front is moving. These triangles mark the leading edge of the colder air mass. For example, if the triangles point east, the cold front is advancing eastward.

2017年5月4日 · On a weather map, a cold front is usually drawn using a solid blue line with triangles pointing in the direction of the warm air that will be replaced. Cold fronts typically move from northwest to southeast. A cold front can bring …

2022年1月6日 · Cold frontal boundaries are identified by a wind shift from south and southwest to north and northwest. These fronts usually extend south or southwestward from a low pressure system. Draw the boundary as a blue line with triangles on it. The line will run between the different noted wind directions.

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Draw the COLD FRONT, which extends southward from the LOW. Winds in advance of the cold front come from the South and temperatures are warm, while behind the cold front winds are from the Northwest and temperatures are lower.