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Read the station models at each suggest of observation.

You are watching: What does an isobar that is a closed circle represent

 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.

Temperature is usually recorded in Celsius degrees and also rainfall, in millimeters. In the US, temperatures are in Fahrenheit and also rainfall is measure in inches.Cloud cover is suggested by the one in the middle; the level to which the is filled shows the degree to which the sky is overcast.Wind barbs point in the direction of the wind. Present or triangle coming off the main line at an angle indicate wind strength: 50 knots for every triangle, 10 knots because that every complete line, 5 knots because that every fifty percent line.

EVEN MORE great INFO:

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.

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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.

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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.

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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.

See more: How Tall Is A 2L Coke Bottle ? What Is The Width Of A 2 Liter Bottle

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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.