Enter the Current Wind Speed (km/h) - Must be > 0
Enter the Current Temperature (°C)
Adjusted Temperature (°C)
Risk to Workers
Health Concerns

Estimating Wind Speed

Wind Speed (km/h)Estimating wind speed - what to look for
10Wind felt on face - wind vane begins to move
20Small flags extended
30Wind raises loose paper, large flags flap and small tree branches move
40Small trees begin to sway and large flags extend and flap strongly
50Large branches of trees move, telephone wires whistle and it is hard to use umbrella
60Trees bend and walking against wind is hard