Isotach Maps

Isotach maps use contour lines to see wind speed. This is an Isotach map of Florida showing the windspeeds during a category 4 hurricane. As you can see in the south towards Miami the windspeed is at its highest, where the hurrican would generally hit. As you get towards northern central florida the contour lines close in and the windspeed gets slower.

http://ics-sips-fl.com/Solutions/Hurricane.htm