Isobar maps use isobar contour lines in order to show air pressure in a geographic location at that given time. The isobar line connects equal points of air pressure on the map. The isobar map above was released on September 17, 2010 in New Zealand to warn its inhabitants of the approaching severe weather. Winds during this westerly flowing storm were expected to reach between 120-130 kmh and had the potential to lift roofs off of houses! Isobaric maps like the one above a very important when it comes to explaining our weather and helping prepare for severe weather.
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