What does the weather sign box stand for?
Special symbols representing various weather phenomena, clouds and sky conditions. Includes weather phenomenon symbols for observation and recording and weather graphic symbols for media communication.
Interpretation of weather symbols
1, sunny day: it means that there are no clouds or scattered clouds in the sky, but the cloud amount is less than110, which is called sunny day. Sometimes there are very high and thin clouds in the sky, but this has little effect on sunlight.
2. Cloudy: It can be said to be cloudy when the cloud amount of low clouds in the sky accounts for 4/ 10~7/ 10 or the cloud amount of high clouds accounts for 6/ 10 or more of the sky area.
3. overcast: it is called cloudy when the middle and low cloud cover accounts for more than 8/ 10 of the sky area. A cloudy day means that the sky is dark, and little or no sunlight passes through the clouds.
4. Light rain or moderate rain: it is called light rain when the 24-hour rainfall is less than 10.0mm or 1 hour rainfall is less than 2.5mm, and it is called moderate rain when the 24-hour rainfall is between 1 0.0 ~ 24.9mm or1hour rainfall is between 2.5 ~ 8.0mm. ..
5. Heavy rain: It is called heavy rain when the 24-hour rainfall is less than 25.0~49.9 mm or 1 hour rainfall reaches 8. 1~ 15.9 mm. ..
6. Rainstorm: Rainstorm is called when the rainfall reaches or exceeds 50.0mm in 24 hours and 1 hour reaches or exceeds16.0mm.. When the rainfall reaches 100.0 ~ 199.9 mm, heavy rain occurs; When the rainfall reaches 200.0 mm, it is called rainstorm.
7. Hail: It is a kind of solid precipitation. Refers to spherical or conical ice cubes with a diameter of 5.0 mm, which will rain heavily in the clouds. The shape is also irregular. This monomer is called hail block, which consists of transparent and opaque layers alternately. The diameter of large hailstones can reach 19 cm.
8. Thunderstorm: refers to sudden rainfall accompanied by thunder and 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 land at the same time. When it happens, the temperature near the ground is slightly higher than 0℃. When snow falls into this layer of air, part of it will melt into water droplets.
10, light snow: refers to the snowfall with horizontal visibility exceeding 1000 meters or snowfall less than 2.5 mm within 24 hours.
1 1, medium snow: refers to the snowfall with horizontal visibility exceeding 500 ~ 1000 meters or snowfall less than 2.5 ~ 5.0 mm within 24 hours.
12. Heavy snow: refers to the snowfall with horizontal visibility less than 500m or snowfall greater than 5.0mm within 24 hours.