How many levels of forest fire risk are there?

The fifth floor Forest fire risk rating is divided into five levels, with the first level representing low or no fire risk rating; The second level represents a lower fire risk level or a weaker fire risk level; The third level represents a moderate fire risk rating, and the fourth level represents a high fire risk rating; 5. Represents the highest fire risk rating or extremely high fire risk rating. The connotation of the five levels of forest fire risk is that the first level is difficult to burn and can be used with fire; The second stage is not easy to burn, and fire can be used; The third level is combustible weather, and the use of fire should be controlled; The fourth grade is flammable and high fire risk weather, and the forest area should stop using fire; Level 5 is the highest level of extremely flammable fire weather, and it is strictly forbidden to use fire inside and outside.