The sky is clear in Wan Li, why is it overcast the next second?

This kind of situation is usually a shower, which falls from the cumulonimbus cloud, that is, the rain is short, the whole process is sudden, and the precipitation intensity changes greatly. Sometimes accompanied by lightning and thunder, mostly in summer. Showers are intermittent, generally small in scope, with rain banners and often accompanied by strong winds. So when a shower comes, it is often clear in Wan Li one second before, so why do dark clouds cover the sun the next?

Showers usually occur in sunny weather in summer without any warning. The sudden rain made people unexpected and unprepared. Thunderstorms are much more violent than showers, accompanied by electric discharge. There are often strong winds and thunderstorms before coming. The wind came, flying sand and stones, overturning roofs and blowing down walls. In the storm, things in the street danced with the wind, flying everywhere and even uprooting trees. Thunderstorm: Also known as thunderstorm. Shower phenomenon accompanied by lightning. Thunderstorms are the most common in summer in China, mainly in the south of the Yangtze River in spring and autumn, and the least in winter. After 10, the thunderstorm in the north of the Yangtze River basically disappeared.

When the weather forecast shows showers, people should take umbrellas or raincoats when they go out, or find a temporary shelter from the rain. Because the shower time is short and it comes and goes quickly, it will generally not cause physical harm to people. When there is a forecast or a shower, just take an umbrella when you go out.

In agriculture, showers can lead to crop lodging, plant mechanical damage and soil and fertilizer erosion. When showers run down the slopes of mountains at high speed, they are very harmful to plants. When showers break up soil particles, they also bury crops and grass seedlings. When it rains, the soil may harden, resulting in poor permeability and decreased water absorption capacity of roots.