Weather symbol?

Weather symbol pictures and descriptions:

1, sunny: it means that there are no clouds or scattered clouds in the sky, but the cloud amount is less than110, which is called sunny. Sometimes there are very high and thin clouds in the sky, but they have little effect on sunlight.

2. Cloudy: It can be said to be cloudy when the cloud amount of low clouds accounts for 4/ 10 ~ 7/ 10 of the sky area or the cloud amount of high clouds accounts for more than 6/ 10 of the sky area.

3. Cloudy day: it is called cloudy when the cloud amount of the middle and low clouds accounts for more than 8/ 10 of the sky area. Cloudy days are dark days, and little or no sunlight can penetrate the clouds.

4. Fog: refers to a large number of water droplets or ice crystal particles suspended in the air near the ground. When this aggregate reduces the horizontal visual distance below 1000 meters, it is called fog; When the visible distance drops to 1000 ~ 10000 meters, it is called light fog.

5, light rain: 4 hours rainfall is less than 1 0.0mm or1hour rainfall is less than 2.5mm, which is called light rain.

6. Moderate rain: it is moderate rain when the rainfall within 24 hours is 10.0 ~ 24.9 mm or 1 hour is 2.5 ~ 8.0 mm. ..

7. Rainstorm: Rainstorm is called when the rainfall in 24 hours is less than 25.0 ~ 49.9 mm or 1 hour reaches 8. 1 ~ 15.9 mm. ..

8. Rainstorm: Rainstorm is called when the rainfall reaches or exceeds 50.0mm in 24 hours and 1 hour reaches or exceeds16.0mm.. Heavy rain occurs when the rainfall reaches 100.0 ~ 199.9 mm; The rainfall of 200.0 mm is called rainstorm;

9. Thundershower: refers to sudden rainfall accompanied by lightning, which is characterized by short rainfall time, sudden start and end, and great changes in precipitation intensity. Intermittent precipitation accompanied by lightning and thunder.

10, hail: it is a kind of solid precipitation. Refers to spherical or conical ice cubes with a diameter of 5.0 mm, and it will rain heavily in the clouds. The shape is also irregular. The monomer is called hail block, which consists of transparent and opaque layers. The diameter of large hailstones can reach 19 cm.

1 1. Freezing rain: raindrops freeze on the ground below 0℃, also called rain songs (frozen by fog drops, called fog songs), and often fall off power lines, freezing the road surface and affecting communication, power supply and traffic.

12, sleet: refers to the precipitation phenomenon that raindrops and wet snow fall to the ground at the same time. When it happens, the near-surface temperature is slightly higher than 0℃. When snow falls into this layer of air, part of it melts into water droplets.

13, light snow: refers to the snow whose horizontal visibility exceeds 1000m when it snows, or whose snowfall is less than 2.5mm within 24 hours.

14, medium snow: refers to the snowfall when the horizontal visibility exceeds 500 ~ 1000m or the snowfall is less than 2.5 ~ 5.0mm within 24 hours. ..

15, heavy snowstorm: refers to the snowfall with horizontal visibility less than 500m or snowfall greater than 5.0mm within 24 hours.

16. Frost: In the transitional season of spring and autumn, the temperature is higher than 0℃ during the day and drops below 0℃ for a short time at night. When it appears, the temperature in the louver shall not be lower than 0℃; Frost often appears on the ground or on the surface of objects.

Weather symbols refer to 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.

The daytime mentioned in the weather forecast refers to 8: 00 to 20: 00 local standard time, in which 17: 00 to 20: 00 is called evening; Call night after 20 o'clock to 8 o'clock the next day.

Rainfall: The meteorological department generally refers to the rainfall within 24 hours. Rainfall is generally divided into eight levels: sporadic light rain, light rain, shower, moderate rain, heavy rain, heavy rain, heavy rain, heavy rain, heavy rain and heavy rain. According to the 24-hour precipitation (mm), the rainfall grades are: light rain 0. 1 ~ 9.9, moderate rain 10.0 ~ 24.9, heavy rain 25.0 ~ 49.9 and heavy rain 50.0 ~ 99.9.