Pictures of weather symbols?

Pictures and explanations of weather symbols:

1. Sunny: It means that there are no clouds in the sky or there are sporadic 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 is also called sunny.

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. cloudy day: it is called cloudy when the cloud amount of medium and low clouds accounts for 8/1 or more of the sky area. Cloudy days are dark days, and little or no sunlight can penetrate through 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 visible distance below 1 meters, it is called fog; When the visible distance drops to 1 ~ 1 meters, it is called light fog.

5. Light rain: it is called light rain when the rainfall is less than 1.mm in 4 hours or less than 2.5mm in 1 hour.

6. moderate rain: moderate rain occurs when the rainfall within 24 hours is 1. ~ 24.9mm or when the rainfall within one hour is 2.5 ~ 8.mm..

7. 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.

8. 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; The rainfall of 2. mm is called torrential rain;

9. 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. Intermittent precipitation accompanied by lightning and thunder.

1. 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. The large hail block can reach 19 cm in diameter.

11. Freezing rain: raindrops are frozen on the ground below ℃, also known as rain song (frozen by fog drops, called fog song), which often drops off the power line, 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 temperature near the ground is slightly higher than ℃. When snow falls into this layer of air, part of it melts into water droplets.

13. Light snow: refers to the snowfall with the horizontal visibility exceeding 1m or the snowfall less than 2.5mm within 24 hours.

14. 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.

15. Heavy snowstorm: refers to the snowfall with horizontal visibility less than 5 meters or snowfall greater than 5. mm within 24 hours.

16. Frost: during the spring and autumn transition season, the temperature is higher than ℃ during the day and drops below ℃ at night for a short time. When it appears, the temperature in the louver box may not be lower than ℃; 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. Including weather phenomenon symbols for observation records and weather graphic symbols for media communication.

The daytime mentioned in the weather forecast refers to 8: to 2: local standard time, of which 17: to 2: is called evening; After 2 o'clock to 8 o'clock the next day is called night.

rainfall situation: the meteorological department generally refers to the amount of rainfall within 24 hours. The amount of rainfall is generally divided into eight levels: sporadic light rain, light rain, shower, moderate rain, heavy rain, heavy rain, heavy rain and heavy rain. According to the 24-hour precipitation (mm), the rainfall grades are: light rain .1-9.9, moderate rain 1.-24.9, heavy rain 25.-49.9, and heavy rain 5.-99.9.