Hill Conditions & Weather

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Wind Chill Hazards and What to Do 
Wind Chill
Risk of Frostbite
Other Health Concerns
What to Do
0 to -9 Low
Slight increase in discomfort
 
Dress Warmly
Stay Dry
-10 to -27 Low
Uncomfortable
Risk of hypothermia if outside for long periods without adequate protection.
Dress in layers of warm clothing, with an outer layer that is wind-resistant. Wear a hat, mittens or insulated gloves, a scarf and insulated, waterproof footwear. Stay dry. Keep active
-28 to -39
Risk: exposed skin can freeze in 10 to 30 minutes
Risk of frostnip or frostbite: Check face and extremities for numbness or whiteness. Risk of hypothermia if outside for long periods without adequate clothing or shelter from wind and cold.
Dress in layers of warm clothing, with an outer layer that is wind-resistant Cover exposed skin Wear a hat, mittens or insulated gloves, a scarf, neck tube or face mask and insulated, waterproof footwear Stay dry Keep active
-40 to -47
High Risk of frostbite: Check face and extremities for numbness or whiteness.
Risk of hypothermia if outside for long periods without adequate clothing or shelter from wind and cold.
Dress in layers of warm clothing, with an outer layer that is wind-resistant. Cover all exposed skin. Wear a hat, mittens or insulated gloves, a scarf, neck tube or face mask and insulated, waterproof footwear. Stay dry Keep active.
-48 to -54
Very High risk: exposed skin can freeze in 2 to 5 minutes*
Very High Risk of frostbite: Check face and extremities frequently for numbness or whiteness. Serious risk of hypothermia if outside for long periods without adequate clothing or shelter from wind and cold.
Be careful. Dress very warmly in layers of clothing, with an outer layer that is wind-resistant. Cover all exposed skin Wear a hat, mittens or insulated gloves, a scarf, neck tube or face mask and insulated, waterproof footwear. Be ready to cut short or cancel outdoor activities. Stay dry. Keep active.
-55 and Colder
Extremely High risk: exposed skin can freeze in less than 2 minutes*
DANGER! Outdoor conditions are hazardous.
Stay indoors.
*In sustained winds over 50 km/h, frostbite can occur faster than indicated.