What weather symbols are there?

Weather symbol? Common noun clear: the sky is less than 30% cloudy. Overcast: The sky has cloud cover accounting for 90% or more. Fog: A large number of tiny water droplets or ice crystals floating in the air near the ground, reducing horizontal visibility to less than 1 km, affecting transportation. Light rain: daily precipitation is less than 10 mm. Heavy rain: daily precipitation is 25.0-49.9 mm. Thundershowers: bursts of rainfall that come and go and are accompanied by lightning and thunder. Hail: With the intense vertical movement in cumulonimbus clouds, small hail nuclei repeatedly rise, condense, fall and melt, growing into small ice cubes with alternating transparent layers and falling, which has an impact on crops. Freezing rain: Raindrops freeze on the ground on the surface of objects below 0°C, also known as rain (those frozen by fog droplets are called rime). They often break power lines and cause the road to freeze, affecting communications, power supply, transportation, etc. . Sleet: The temperature near the ground is slightly higher than 0℃, wet snow or rain and snow fall at the same time. Light snow: The daily snowfall (melted into water) is less than 2.5 mm. Moderate snow: Daily snowfall (melted into water) 2.6-4.9 mm. Heavy snow: The daily snowfall (melted into water) reaches or exceeds 5.0 mm. Frost: When water vapor condenses into white crystals on the ground and object surfaces with a temperature below 0°C, it is called hoar frost. If the water vapor content is low and there is no frost, it is called black frost. It can cause freezing damage to crops and is called frost. Low-pressure trough and high-pressure ridge: On the undulating high-altitude westerly airflow, the wave trough corresponds to the low-pressure trough. The warm air in front of the trough is active, rainy and snowy weather, while the cold air behind the trough controls the windy and cooling weather; the wave crest corresponds to the high-pressure ridge, and the sky is clear. Cold front and warm front: A cold front is the front of cold air. At the junction of cold and warm air masses, the cold air pushes towards the warm air. There will be strong wind and rain on the cold front, and it will be windy and cooling after the front. On the contrary, it will be cloudy and rainy on the warm front, and it will become cloudy and sunny after the front, and the temperature will rise. Gale: represented by wind arrows, consisting of wind rods and wind feathers. The wind direction pole refers to the direction of the wind and has 8 directions. The wind plume consists of 3 or 4 dashes and triangles representing the wind force of the wind, vertically to the right of the end of the wind pole (Northern Hemisphere).