Wind Chill  The combination of wind and low temperature in
winter can be deadly. The wind chill index helps you determine
when dangerous conditions develop that could lead to frostbite
or hypothermia. It takes into account heat loss from the human
body to its surroundings during cold and windy weather. The
calculation utilizes wind speed in miles per hour and
temperature in degrees Fahrenheit. For example, a temperature of
minus 5 degrees occurring with a 20 mph wind gives a wind chill
near minus 30 degrees (see wind chill calculation table
below). This means that your body will lose heat at the same
rate as it would if the air temperature were minus 30 degrees
with no wind. Wind chill values near minus 25 degrees mean that
frostbite is possible within 15 minutes.  Hypothermia is a
dangerously low body temperature and is the most common winter
weather killer. When you hear of a hiker, climber, hunter, or a
stranded traveler perishing from cold weather exposure,
hypothermia was the cause. Most people are surpr