National Fire Danger Rating System is used in the United States to provide a measure of the relative seriousness of burning conditions and threat of wildfires.

What is a fire danger rating scale?

The National Fire Danger Rating System (NFDRS) is a system that allows fire managers to estimate today's or tomorrow's fire danger for a given area. ... It links an organization's readiness level (or pre-planned fire suppression actions) to the potential fire problems of the day.

How is fire danger level determined?

In summary, fire danger rating is a numeric scaling of the potential over a large area for fires to ignite, spread, and require fire suppression action. It is derived by applying local observations of current or predicted conditions of fuel, weather, and topographic factors to a set of complex science-based equations.