Transcript The Windchill Factor . . .

The wind chill factor is a combination of air
temperature and wind speed that affects the
freezing rate of exposed skin.
Wind Chill/Frostbite Chart
As this chart indicates, if the actual temperature is -200 F and the wind is blowing 15
mph, the cold effect on your bard skin is -450 F. At this temperature, frostbite can
begin in as little as 10 minutes.
Frostbite is a medical condition that can happen to
anyone. In the most basic terms frostbite is when the skin
and/or the tissue under the skin freezes and causes cell
damage. This is caused by exposure to cold, either through
the air or through a chemical exposure, like to dry ice
(frozen CO2) or highly compressed gasses. Under extreme
conditions frostbite can occur in a second.
The elderly, young children, people with circulatory
disorders, and people from warmer climates have a higher
risk factor of getting frostbite. People who have had
previous cold injuries are also more at risk of getting
frostbite again in the same places.
Frostbite comes in three levels of severity or degrees.
•First degree, also called frost nip: Most people who live in very
cold climates or do a lot of outdoor activity in the winter have had
first degree frostbite (just as most people have had a first degree
burn when they get sunburn). Frost nip presents itself as numbed
skin that has turned white in color. The skin may feel stiff to the
touch, but the tissue under is still warm and soft. There is very
little chance of blistering, infection or permanent scarring as long
as it is treated properly.
•Second degree, superficial frostbite: Superficial frostbite is a
serious medical condition that needs to be treated by a trained
medical professional. The skin will be white or blue and will feel
hard and frozen. The tissue underneath is still undamaged.
Blistering is likely which is why medical treatment should be
sought. Proper treatment is critical to prevent severe or
permanent injuries.
Example of first degree frostbite.
Examples of second degree frostbite.
•Third degree, deep frostbite: The skin is white, blotchy and/or
blue. The tissue underneath is hard and cold to the touch. This
is a life threatening injury. Deep frostbite needs to be treated
by a trained medical professional. The tissue underneath has
been damaged, in severe cases amputation may be the final
recourse to prevent severe infection.
Blistering will happen.
Proper medical treatment in a medical facility with
personnel trained to deal with severe frostbite injuries is
required to aid in the prevention of severe or permanent
injury.
Examples of third degree frostbite.
Facial third degree frostbite.
Frostbite can occur in as little as thirty-seconds in
extreme conditions, and even faster in the case of
chemical injuries.
Factors like wind chill, alcohol consumption,
altitude, getting wet or being damp and how
long you are exposed to the cold all impact how
quickly and how severe frostbite can be.
Long term exposure to moderate cold with wet
boots can cause a more serious injury than a
short-term exposure to severe cold with
inadequate boots in the case of your feet.
It is a complex equation that needs to be weighed
careful when being outdoors in the cold.
The most logical step for treatment is to get out of the cold
and out of the wind. Warm the frostbitten areas slowly, and start
at the outer extremities and work your way in (toes to feet,
fingers to hands, nose to cheeks) using warm breath or by tucking
the hands or feet inside warm clothing by bare warm flesh
(armpits and groin areas work best).
For larger areas of frostbite (when more than a toe or earlobe is
involved) keep the frostbitten area elevated. Wrap the injured
area in warmed blankets. If possible immerse in warm water
(104 to 108 degrees - similar in temperature to what you would
bathe a new born baby in) for 15 to 30 minutes. Please note
that immersion will become very painful as the flesh begins to
thaw out. You should never rub or massage the frozen areas,
doing so only rubs the ice crystals around on the delicate cell
walls and causes further injury and damage!
Unless your life absolutely depends on it, never walk on
frostbitten feet. If blisters form during rewarming, do not
break or drain them. The skin as it thaws out may turn
red, could tingle, burn or be very painful.
If you experience pain during the
rewarming process, get blisters, or have
tissue damage you should seek medical
attention immediately.
Never rewarm a frostbitten area on your own if you can get
conventional medical help and advice in a timely fashion.
Prevention of frostbite is actually very simple and
for the most part is based on common sense.
•Understand the prevailing weather conditions.
Remember not only air temperature but wind speed
effects how quickly frostbite can occur. Be prepared for
worse than what the weatherman calls for.
•Wear layers of clothing and protect exposed skin from
the elements. A number of very good man made
insulators are available on the market from a number of
manufacturers. Wool is the best natural insulator. Cotton
should be avoided if you are in conditions where you
might get wet.
•Don't -- drink alcohol, consume caffeine drinks or smoke
when out in the extreme cold. All of these activities speed-up
hypothermia and frostbite.
•Wear a hat that will cover your ears. If you are in
extreme cold or windy conditions, a ski mask or facemask
is helpful. In the most severe conditions, totally covering
your face, including goggles, may be required - so that
not the tiniest bit of skin is exposed on the face or head.
•Wool socks with liner socks made of Wick Dry or Cool
Max, with good boots that are waterproofed help keep
your feet warm. If socks become damp or wet, change
them immediately. If the inside of your boots get wet,
dry them - before wearing them again.
Frostbite is a very preventable and treatable outdoor-related
injury. A little careful preparation and understanding is all it
takes to protect you from serious injuries while working
outdoors. Jack Frost may nip at your nose, but if it's
properly covered you'll never know.