What is the forest fire risk rating?

Grade I: the meteorological grade of forest fire risk is low.

Grade II: The meteorological grade of forest fire risk is low.

Level 3: The meteorological level of forest fire danger is relatively high. Precautions must be strengthened.

Level 4: The meteorological level of forest fire danger is high, and the management of fire sources should be strengthened in forest areas.

Level 5: The meteorological level of forest fire danger is extremely high, and it is forbidden to use fire in all forests.

Influencing factors of forest fire weather grade;

China Meteorological Bureau and Forestry Bureau issued that the national forest fire weather grade is mainly calculated according to factors such as temperature, humidity, wind power and precipitation.

By studying the influence of meteorological factors on forest fires, meteorologists concluded that the main meteorological conditions of fire weather are high temperature, little precipitation, low relative humidity and high wind speed. Based on the correlation between meteorological elements and forest fire risk grade, the meteorological department developed a forest fire risk grade prediction system through microcomputer to assist the forestry department in fire prevention and extinguishing. The commonly used fire weather grade forecast is mainly the urban fire grade forecast.

Through statistical analysis, the conclusions are as follows:

FE=TE+HE+NRE+WE—Y

Where, FE is the fire risk forecast grade index, TE is the daily maximum temperature fire risk index, and when he is 14, the relative humidity fire risk index, NRE is the fire risk index of previous consecutive days without precipitation, WE is the wind fire risk index of that day, and YRE is the precipitation fire risk index of that day.