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Wind and Pressure• Wind flows around <strong>the</strong> contours ofconstant pressure (isobars).• However… due to surface friction, windcross <strong>the</strong> isobars slightly.• Surface winds move clockwise aroundhigh pressure and are deflected outward.• Surface winds move counterclockwisearound a low and are pulled inwardacross <strong>the</strong> isobars.