What do the weather sign patterns represent?
The meanings of weather sign patterns are as follows:
Special symbols representing various weather phenomena, clouds and sky conditions. Including weather phenomenon symbols for observation records and weather graphic symbols for media communication.
Explanation of weather symbols
1. Sunny: It means that there are no clouds in the sky or scattered clouds, but the amount of clouds accounts for less than 1/1 of the sky. Sometimes there are very high and thin clouds in the sky, but it has little influence on the sunlight.
2. Cloudy: It can be cloudy when the cloud amount of medium and low clouds in the sky accounts for 4/1~7/1 of the sky area or the cloud amount of upper air accounts for 6/1 or more of the sky area.
3. overcast: it is called overcast when the cloud amount of medium and low clouds accounts for 8/1 or more of the sky area. A cloudy day means that the sky is dark and there is little or no sunlight passing through the clouds.
4. Light rain or moderate rain: it is called light rain when the rainfall is less than 1.mm in 24 hours or less than 2.5mm in one hour, and moderate rain when the rainfall is 1. ~ 24.9mm in 24 hours or 2.5 ~ 8.mm in one hour.
5. Heavy rain: It is called heavy rain when the rainfall is less than 25. ~ 49.9mm in 24 hours or 8.1 ~ 15.9mm in one hour.
6. rainstorm: it is called rainstorm when the rainfall reaches or exceeds 5.mm in 24 hours and 16.mm in one hour. Heavy rain occurs when the rainfall reaches 1. ~ 199.9 mm; When the rainfall reaches 2. mm, it is called a torrential rain.
7. Hail is a kind of solid precipitation. Refers to the spherical or conical ice cubes with a diameter of 5. mm, which will rain heavily in the clouds. The shape is also irregular. The monomer is called hail block, which is composed of transparent and opaque layers alternately. The large hail block can reach 19 cm in diameter.
8. Thunderstorm: refers to the sudden rainfall accompanied by lightning, which is characterized by short rainfall time, sudden start and end, and great changes in precipitation intensity.
9. sleet: refers to the precipitation phenomenon that raindrops and wet snow fall to the ground at the same time. When it happens, the temperature near the ground is slightly higher than ℃. When snow falls into this layer of air, part of it melts into water droplets.
1. Light snow: refers to the snowfall with the horizontal visibility exceeding 1m or the snowfall less than 2.5mm within 24 hours.
11. medium snow: refers to the snowfall with the horizontal visibility exceeding 5-1m or the snowfall less than 2.5-5.mm within 24 hours.
12. Heavy snow: refers to the snowfall with the horizontal visibility less than 5m or the snowfall of more than 5.mm within 24 hours.