Why wind chill matters
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Frostbite and hypothermia don’t just happen in extreme blizzards. They can sneak up during everyday winter fun, especially when wind and wet clothing are involved. And in Manitoba, where wind chill regularly dips into the danger zone, knowing what to watch for can make the difference between a great day outdoors and a medical emergency.
THE WARNING SIGNS
According to the Canadian Red Cross, before frostbite sets in, skin often turns shiny or pink, a stage sometimes called “frost nip.” It’s your body’s early alarm. Ignore it, and tissue can begin freezing, starting with fingers, toes, ears, cheeks and noses.
Superficial frostbite may cause pain, numbness and hardened, pale skin. Deep frostbite is far more serious, with waxy, blue or black skin, total loss of feeling and permanent tissue damage possible.
Hypothermia is even more deceptive. It doesn’t always look dramatic at first. Mild cases start with shivering and clumsiness. Moderate cases can cause confusion, slurred speech and poor judgment. In severe cases, people may stop shivering altogether and can lose consciousness as body temperature drops below 30° C.
WIND STRIPS AWAY HEAT
Manitobans know cold but wind makes it dangerous faster. Wind strips away the thin layer of warm air your body creates, pulling heat from your skin. That’s why exposed skin can freeze in minutes, even when the thermometer doesn’t seem extreme.
At a wind chill of -28 C, frostbite risk jumps sharply. At -40 C, exposed skin can freeze in five to 10 minutes. At -48 C or colder, it can happen in far less time than it takes to shovel a driveway.
High-speed activities like skiing, snowmobiling, running and cycling make it worse. You might feel warm and sweaty while your cheeks, nose or ears are silently freezing.
HOW TO STAY SAFE
The Canadian Red Cross says preventing cold-related injuries is simple but critical, starting with dressing in loose, layered clothing made from wool or synthetic materials, covering exposed areas such as the head, face, hands and feet, and changing out of wet clothing immediately. Manitobans heading outdoors are also encouraged to eat high-calorie foods and drink warm fluids, while avoiding alcohol and caffeine, bring extra layers even for short outings and take shelter from the wind whenever possible.
If someone shows signs of hypothermia, get them out of the cold, remove wet clothing, wrap them in blankets and warm them slowly. Never rub frostbitten skin, and call 911 immediately in severe cases.
THE BOTTOM LINE
Winter is part of Manitoba’s identity, but the cold doesn’t care how experienced you are. Whether you’re ice fishing on Lake Winnipeg, sledding with kids or biking through the city, understanding frostbite, hypothermia and wind chill could save a limb, or a life.
» Winnipeg Sun