Tuesday, November 22, 2011

Isobar Maps

http://ww2010.atmos.uiuc.edu/%28Gh%29/wx/cwp/prods/current/sfcslp/sfcslp_N.gif


Isobar maps shows lines of equal pressure on a map through an isopleth (contour line), isobars are lines drawn on a map joining places of equal average atmospheric pressure reduced to sea level for a specific period of time. This map shows the prediction for Wednesday, November 23rd, 2011 which is the present situation. Currently the North east is under low pressure while the southwest has high pressure and changing again to low pressure in Mexico.

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