ENVO SNOWBIKE KIT MANUAL
|
VERSION 1.2
13
Environment Canada Wind Chill Chart
Actual Air Temperature T
air
(°C)
Wind
5
0
-5
-10 -15 -20 -25 -30 -35 -40 -45 -50
Speed
V
10 m
(km/h)
5
4
-2
-7
-13 -19 -24 -30 -36 -41 -47 -53
-58
10
3
-3
-9
-15 -21 -27 -33 -39 -45 -51
-57 -63
15
2
-4
-11 -17 -23 -29 -35 -41 -48 -54
-60 -66
20
1
-5
-12 -18 -24 -30 -37 -43 -49
-56 -62 -68
25
1
-6
-12 -19 -25 -32 -38 -44 -51
-57 -64 -70
30
0
-6
-13 -20 -26 -33 -39 -46 -52
-59 -65 -72
35
0
-7
-14 -20 -27 -33 -40 -47 -53
-60 -66 -73
40
-1
-7
-14 -21 -27 -34 -41 -48 -54
-61 -68 -74
45
-1
-8
-15 -21 -28 -35 -42 -48
-55 -62 -69 -75
50
-1
-8
-15 -22 -29 -35 -42 -49
-56 -63 -69 -76
55
-2
-8
-15 -22 -29 -36 -43 -50
-57 -63 -70 -77
60
-2
-9
-16 -23 -30 -36 -43 -50
-57 -64 -71 -78
65
-2
-9
-16 -23 -30 -37 -44 -51
-58 -65 -72 -79
70
-2
-9
-16 -23 -30 -37 -44 -51
-58 -65 -72 -80
75
-3
-10 -17 -24 -31 -38 -45 -52
-59 -66 -73 -80
80
-3
-10 -17 -24 -31 -38 -45 -52
-60 -67 -74 -81
where
T
air
= Actual Air Temperature in °C
V
10 m
= Wind Speed at 10 metres in km/h (as reported in weather observations)
Notes:
1. For a given combination of temperature and wind speed, the wind chill index corresponds roughly to the
temperature that one would feel in a very light wind. For example, a temperature of -25°C and a wind speed of
20 km/h give a wind chill index of -37. This means that, with a wind of 20 km/h and a temperature of -25°C, one
would feel as if it were -37°C in a very light wind.
2. Wind chill does
not
affect objects and does
not
lower the actual temperature. It only describe how a human
being would feel in the wind at the ambient temperature.
3. The wind chill index does
not
take into account the effect of sunshine. Bright sunshine may reduce the effect
of wind chill (make it feel warmer) by 6 to 10 units.
Frostbite Guide
Low risk of frostbite for most people
Increasing risk of frostbite for most people within 30 minutes of exposure
High risk for most people in 5 to 10 minutes of exposure
High risk for most people in 2 to 5 minutes of exposure
High risk for most people in 2 minutes of exposure or less
2.1 7. W I N D C H I L L C H A RT
The following information is provided to help you determine when temperatures become
dangerous for riding.
