The symbol used to identify a cold front on a weather map is a blue line with triangles pointing in the direction the cold front is moving
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The front marks the leading edge of the cold air. The blue triangles always point in the direction the front (and cold air) is going. A red line with semicircles on one side indicates a warm front. A warm front shows the leading edge of warmer air trying to replace a colder air mass.
The snowflake symbol is the universal sign for cool air mode.
One of the main symbols on a weather map is a wind vane, showing wind speed and direction. Other symbols include colored lines to denote warm or cold air fronts, isobars for air pressure, and symbols for Cloud Types.
The icon for a concealed front is a purple line with alternating triangles and semicircles (also purple) pointing in the direction the front is moving. Sometimes a cold front “catches up” to a warm front, overtaking both it and the cooler air in front of it. When this happens, an occluded front is created.
During a cold front, a cold air mass collides with a warmer air mass. In this case, the warmer air is less dense and is therefore pushed up in front. As the warm air rises, the moisture begins to condense, forming clouds and precipitation.
The sun icon represents HEAT mode. This is the opposite of cooling mode and is used to heat the room, typically during the cooler winter months. A droplet or water icon is used to indicate DRY mode.
Sleep mode or night mode
This is usually represented by a sleeping star icon.
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