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Wind Chill on a Motorcycle |
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Tuesday, 23 January 2007 |
Calculating the wind chill while riding a motorcycle depends greatly on whether or not you have a windsheild and if you do not, whether you are heading into the wind or if it's at your back.
All things equal however, you can use the following charts to guage the wind chill you might experience while riding - especially if you are riding without proper attire built for travelling in the cold.
If you know the temperature outside, you can estimate
the wind speed by observing the movement of trees and flags, and then
find the wind chill on the second chart.
Wind Speed
| WIND SPEED (km/h) | WHAT TO LOOK FOR |
| 10 |
Wind felt on face; leaves rustle; wind vanes begin to move. |
| 20 |
Leaves & small twigs constantly moving; small flags extended. |
| 30 |
Dust, leaves, & loose paper lifted; large flags flap; small tree branches move. |
| 40 |
Small trees begin to sway; large flags extend and flap. |
| 50 |
Larger tree branches moving; whistling heard in power lines; large flags extend and flap more wildly. |
| 60 |
Whole trees moving; resistance felt in walking against wind; large flags extend fully and flap only at the end |
Wind Chill Index
Temperature (°C)
Wind Speed (km/h) | 0 | -5 | -10 | -15 | -20 | -25 | -30 | -35 | -40 | -45 |
| 10 |
-3 |
-9 |
-15 |
-21 |
-27 |
-33 |
-39 |
-45 |
-51 |
-57 |
| 20 |
-5 |
-12 |
-18 |
-24 |
-31 |
-37 |
-43 |
-49 |
-56 |
-62 |
| 30 |
-7 |
-13 |
-20 |
-26 |
-33 |
-39 |
-46 |
-52 |
-59 |
-65 |
| 40 |
-7 |
-14 |
-21 |
-27 |
-34 |
-41 |
-48 |
-54 |
-61 |
-68 |
| 50 |
-8 |
-15 |
-22 |
-29 |
-35 |
-42 |
-49 |
-56 |
-63 |
-70 |
| 60 |
-9 |
-16 |
-23 |
-30 |
-37 |
-43 |
-50 |
-57 |
-64 |
-71 |
Notes regarding wind chill
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.
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Last Updated ( Tuesday, 23 January 2007 )
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