Canadian Winters are nasty and because I learned about windchill in the 70's & 80's - I also learned to associate the danger with the Watts / Square Meter measurement instead of the temperature based version.
So when someone said there was a windchill of 1400, I would shrug. When it was 2400, I would go outside for short periods, fully closed in my cold weather gear.
When someone says there's a wind chill of -35dC - - - I have difficulty translating that into a threat / risk level.
So, for my reference I am posting this Windchill information. I may start also develop a Traditional Catholic Windchill chart because a chill has definitely fallen over the Church as they attempt (again) to wipe out the Catholic Faith.
I am still on a blogging holiday but will see how things go as the last time I did this a lot of interesting things happened in the Church :-).
Stay Warm and Stay Catholic!
P^3
Rescure Dynamics Chart
Windchill Factor / (Equivalent Temperature)
Effect of Windchill
Under 900 (-3 C)
Conditions comfortable with normal winter clothing.
900 - 1400 (-18 C)
Conditions no longer pleasant for outdoor activities on overcast
days. Work and recreation becomes uncomfortable unless properly
clothed. Hats, coats and gloves are recommended.
1400 - 1600 (-25 C)
Conditions no longer pleasant for outdoor activities on sunny
days. Outdoor work and travel are safe with quality winter clothing.
1600 - 1800 (-30 C)
Frostbite can occur with prolonged exposure. Heavy outer
clothing is essential. Your weather office will add the current wind
chill to public forecasts at this level.
1800 - 2000 (-35 C)
Frostbite can occur in a few minutes. Multiple layers of clothing become essential.
2000 or more (-40 C)
Unprotected skin can freeze in one minute. Adequate face
protection becomes important. Elementary school children require
continuous adult supervision while outdoors. Work and travel alone is
not advisable.
2200 or more (-45 C)
Adequate face protection becomes mandatory. Work and travel
alone is hazardous. Special warm-up breaks are recommended for outside
workers.
2300 or more (-50 C)
Outdoor conditions become dangerous. School closures should be
considered. Exposed areas freeze in less than one minute for the average
person.
2400 or more (-60 C)
Outdoor conditions are dangerous even for short periods of time.
All non- emergency outdoor work should cease. Buddy system and
observation are mandatory.
2600 or more (-65 C)
Exposed flesh freezes in less than one half minute on average.
These are rare wind chill values which will be experienced in some major
blizzards. Danger is extreme.
Other factors can affect comfort and your degree of
risk including: age, body type, humidity, clothing, level of physical
activity, sunshine and even your food intake.
Environment Canada Chart
Wind Chill | Exposure Risk | Health Concerns |
What to Do |
---|---|---|---|
0 to -9 | Low Risk |
|
|
-10 to -27 | Moderate Risk |
|
|
-28 to -39 | High Risk: exposed skin can freeze in 10 to 30 minutes |
|
|
-40 to -47 | Very High risk: exposed skin can freeze in 5 to 10 minutesFootnote1 |
|
|
-48 to -54 | Severe risk: exposed skin can freeze in 2 to 5 minutesFootnote1 |
|
|
-55 and colder | Extreme risk: exposed skin can freeze in less than 2 minutesFootnote1 |
|
|
References
Rescue Dynamics: Interpreting the Windchill Factor / Equivalent Temperature
Canada.ca: Wind chill and cold weather
Canada.ca: Wind Chill Hazards and What To Do
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