FDI Calculator

If you do not have the days since rain or rainfall then leave them blank.

Temp: Humidity: Wind Speed: Days Since Rain: Rainfall:

BLUE 0 – 20 Low Fire Hazard. Controled burning operations can normally be executed with a reasonable degree of safety. GREEN 21 – 45 Although controlled burning operations can be done without creating a fire hazard, care must be taken when burning on exposed, dry slopes. Keep a constant watch for unexpected wind speed and direction changes. YELLOW 46 – 60 Controlled burning is not recommended when the F.D.I. exceeds 50. Aircraft should be called in at the early stages of a fire. ORANGE 61 – 75 No controlled burning of any nature should take place. Careful note should be taken of any sign of smoke anywhere. Any fire the occurs, should be attacked with the maximum force at hand, including all availabe aircraft at the time. RED 75 – 100 All personnel and equipment should be removed from field. Fire teams, labour and equipment are to be place on full standby. At the first sign of smoke, every possible measure should be taken in order to bring the fire under control in the shortest possible time. All available aircraft to be called without delay.