Windrose Maps

http://www.nc-climate.ncsu.edu/windrose.php

A windrose is a symbol that shows the direction and wind speed in a particular location. This is mostly used by meteorologists. This is an example of a windrose of Raleigh-Durham from 1948 to 2013. The legend demonstrates the colors designated to each speed and the slices demonstrate the direction that can be found using the coordinate system. So most of the wind was found to be in the SW direction with and average speed if 7.12 mph.