The forecast factors selected by the national forest fire weather grade forecast method are as follows

according to the relevant information, the forecast factors selected by the national forest fire weather grade forecast method are as follows. The National Forest Fire Weather Grade shows that the forecast factors selected by the national forest fire weather grade forecast method are:

1. The daily maximum air temperature during the forest fire prevention period.

2. Minimum daily relative humidity during forest fire prevention period.

3. The precipitation in the early days of each day or the same day during the forest fire prevention period and the number of consecutive days without precipitation thereafter.

4. The daily maximum wind power level during the forest fire prevention period.

5. Revised index of the influence of biological and abiotic phenological seasons during the forest fire prevention period. The value obtained by subtracting the fifth revised index from the first four factors is compared with the standard value of forest fire weather grade to obtain the forest fire weather grade. There is no danger at one level; Second-level low risk; Grade III moderate risk; Level 4 is highly dangerous; Level five is extremely dangerous.