I was looking for a printout of wind chill factors and discovered that in 2001, as a result of research done in Canada, the national Weather Service has made significant revisions to their wind chill tables. From their web page:

"Specifically, the new WCT index:

•Calculates wind speed at an average height of five feet (typical height of an adult human face) based on readings from the national standard height of 33 feet (typical height of an anemometer)
•Is based on a human face model
•Incorporates modern heat transfer theory (heat loss from the body to its surroundings, during cold and breezy/windy days)
•Lowers the calm wind threshold to 3 mph
•Uses a consistent standard for skin tissue resistance
•Assumes no impact from the sun (i.e., clear night sky"

These changes produce a startling reduction in the severity of wind chill as illustrated by the graph at the bottom of the page. It might be a good idea to replace any old charts that you may have.

Regards, Vince