Isobars are the soild lines which appear on an isobaric map. These solid lines depict where winds are the strongest in certain areas pretaining to a storm, or just normal weather patterns. On a map, when the isobars are the closest together then the winds are the strongest in that particular area. When they are farther apart calmer winds can be found in the effected regions.On the map you will notice green dashed lines, and these lines are what is known as geopotential heights. This is where the altitude of at least 500 millibars of air pressure has been reached in and around the system. The isobaric map above is showing weather and wind forecasts for the New York and Boston areas. With the packed isobars on the map, it is apparent that the airports in those areas will infact experience delays due to the storms and high winds. With an isobaric map, the main interest and focus is on wind, and wind velocity and speed. This is just what this map is concentrating on as well.
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