Fire-danger meter

From Glossary of Meteorology
(Redirected from Fuel moisture)



fire-danger meter

  1. A device for combining ratings of several variable factors into numerical classes of fire danger.

  2. A graphical aid used in fire-weather forecasting to calculate the degree of forest-fire danger (
    or burning index).

    Commonly in the form of a circular slide rule, the fire-danger meter relates numerical indices of 1) the seasonal stage of foliage, 2) the cumulative effect of past precipitation or lack thereof (buildup index), 3) the measured fuel moisture, and 4) the speed of the wind in the woods. The fuel moisture is determined by weighing a special type of wooden stick that has been exposed in the woods, its weight being proportional to its contained water.


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