Weather forecast. Meteorological weather map of the United State of America. Realistic synoptic map USA with aditable generic map showing isobars and weather fronts. Topography and physical map.

Isobars are lines on a weather map joining together places of equal atmospheric pressure. On the map the isobar marked 1004 represents an area of high pressure, while the isobar marked 976 ...

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On the map the isobar marked 1004 represents an area of high pressure, while the isobar marked 976 represents an area of low pressure. Not only do isobars tell us whether there is high or low ...