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Wind Socks

posted by Susan on 2009.12.17, under Alternative Measures
17:

The windsock pictured in the photo below is on the rooftop of my studio building in Ferndale, Michigan.  There is a beautiful high-level cirrus cloud above. According to the position of the sock, winds are calm and from the southwest.

Windsocks point in the opposite direction the wind is blowing.  Wind speed is determined by the angle of the sock to the mounting pole. When there is little or no wind the sock droops. As wind speed increases the windsock will extend outward. Wind over 17 mph will extend the sock straight out.

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