I thought this method of guesstimating windspeed might be helpful to some of
y'all if your caught in an area with no windsock and need to know the
approximate windspeed.  It's called the Beaufort Wind Scale.

TERM      WINDSPEED (mph)       VISUAL AFFECT

Calm                      	<1                 Calm, smoke rises vertically.

Light air                	1-3                Direction of wind shown by smoke, but not  by wind vane.

Light breeze         	 4-7               Wind felt on face, leaves rustle, wind vane moves.

Gentle Breeze         	8-12               Leaves and small twigs in constant motion  and wind extends a small flag.

Moderate breeze 	13-18             Wind raises dust, and loose paper and small branches move.

Fresh Breeze    	 19-24             Small-leaved trees begin to sway, crested wavelets form on inland waters.

Strong Breeze   	25-31              Large branches move, overhead wires whistle and unbrellas are difficult to control.

Tim Adams