During the 1940s Siple and Charles F. Passel conducted experiments on the time needed to freeze water in a plastic cylinder that was exposed to the elements. They found that the time depends on how warm the water is at the beginning, the outside temperature and the wind speed. If you dress the same on these days, you ll pay the price. Kessler and others want to abandon the wind chill index in favor of a more scientifically accurate warning system. The wind chill index is like asking me how tall I am and my answer is 150 pounds.
Weathermen just convert it themselves.
Canada is considering going back to the old wind chill index, using the newer models. The National Weather Service review of the wind chill index will take six months to a year, says Jannie Gibson, a meteorologist at the service.