So it seems especially timely for a refresher on frostbite and
hypothermia. When you're outside in this kind of weather, keep
tabs on what your body is telling you. Frostbite will most
likely occur when windchill hovers between zero and 10 below,
and how long it takes to set in depends on the ambient air
temperature, said Meyerson. "Say the air temperature is zero
degrees, you have a 10 mile an hour wind, and a windchill of 16
below, and in that sort of temperature, you could have frostbite
in 30 to 45 minutes," said Meyerson. "If there's a 20-mile- an-
hour wind and it's 22 below, you could have frostbite in as
little as five minutes." Frostbite sets in gradually; its
initial stage is called "frostnip." You may have experienced
frostnip without being aware of it. If you have ever come inside
after a day of winter steelheading to have the tips of your
fingers sting as they slowly warm up — or your ears, or the tip
of the nose — you may have been frostnipped. "Frostnip ... is
basically very mild initial stages