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Surface Analysis charts are visual representations of weather conditions at the Earth's surface. These charts show atmospheric pressure patterns, fronts, and other weather systems on a map using a combination of symbols, colors, and contour lines to represent different weather features. For example, high-pressure systems are often indicated by a large blue H, while low-pressure systems are represented by a red L. Other symbols might be used to show the location of cold fronts, warm fronts, or other weather features.

The charts can be used to understand current weather conditions and to make short-term weather forecasts. By analyzing the patterns and movements of pressure systems and fronts on the chart, meteorologists can make predictions about changes in temperature, precipitation, and wind direction. Professionals, such as pilots and sailors, use surface analysis charts to make decisions based on weather conditions. They are also used by individuals who want to stay informed about weather conditions in their area.

Image source: National Hurricane Center.

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