Read the station models at each suggest of observation.
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If your weather map has station models, every one will certainly plot the temperature, dew-point, wind, sea level pressure, push tendency, and ongoing weather through a series of symbols.
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Isobarslines of consistent pressureA line drawn on a weather map connecting point out of equal pressure is referred to as an “isobar”. Isobars are produced from median sea-level pressure reports and are given in millibars.
The diagram listed below depicts a pair the sample isobars. In ~ every allude along the optimal isobar, the press is 996 mb while in ~ every allude along the bottom isobar, the push is 1000 mb. Points above the 1000 mb isobar have actually a reduced pressure and points listed below that isobar have actually a greater pressure.
Any allude lying in between these two isobars must have a press somewhere in between 996 mb and 1000 mb. Point A, because that example, has a pressure of 998 mb and also is thus located in between the 996 mb isobar and also the 1000 mb isobar.
Sea-level press reports are easily accessible every hour, which way that isobar maps are likewise available every hour. The solid blue contours (in the map below) stand for isobars and also the numbers along selected contours indicate the pressure value the that certain isobar.
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Such maps are valuable for locating areas of high and low pressure, which correspond to the location of surface cyclones and anticyclones. A map the isobars is also useful for locating strong pressure gradients, which room identifiable by a tight pack of the isobars. More powerful winds are associated with stronger pressure gradients.