Meteorological conditions prone to forest fires

Meteorological conditions prone to forest fires are as follows:

1, temperature: The higher the temperature, the faster the evaporation rate of water in combustible materials, which makes the articles dry and prone to fire.

The higher the temperature, the higher the temperature of combustible materials and the faster its evaporation rate. When the combustible substance reaches the ignition point, it will burn. Generally speaking, when the relative humidity is above 30%, combustible substances are difficult to burn; When the relative humidity is less than 30%, fire is easy to happen.

2. Humidity: In general, when the air humidity is less than 60%, there is a possibility of fire.

Generally speaking, when the relative humidity is above 75%, forest fires are not easy to occur; 75%~55%, fire may occur; When the relative humidity is less than 55%, fire is easy to happen; But when 10%~30%, it is very easy to have a fire.

3. Precipitation: The amount of precipitation is directly related to humidity, and the amount of precipitation is closely related to forest and grassland fires.

4. Wind power: Wind not only contributes to combustion, but also enables the fire source to obtain sufficient oxygen supply after the fire, thus accelerating combustion.

There is a close relationship between meteorology and forest fires. The ignition point of various combustible materials in the forest depends on the change of meteorological conditions, such as humidity, temperature, precipitation, wind and so on. It is generally believed that in sunny, high temperature and windy weather, the water content of combustible materials in the forest often drops below 40%, and forest fires are most likely to occur at this time.

Please note that these are only general situations, and the actual fire is also affected by many other factors, such as whether there is an open flame, wind speed, combustible materials and so on. Therefore, in order to accurately predict the occurrence of fire, it is necessary to comprehensively consider various factors.