What is cow's back rain? The reason of cow's back rain

"Summer rain is separated from the cow's back, and the bird is wet and half-winged." This folk proverb says that summer rainfall has a strong regional character. Yesterday evening, there was a short-term "cow back rain" in Wuhan: when it was raining cats and dogs in Hankou, it was sunny in Wuchang. What is cow's back rain? What is the reason for the rain on the cow's back?

What is cow's back rain?

"Rain on the cow's back" is the abbreviation of "Summer rain separates the cow's back", which is used to describe that there is rain on one side of the cow's back but it doesn't drip there. "Summer rain separates the cow's back, and the bird is half wet." Folk proverbs often describe the uneven distribution and short time of rainfall in midsummer, and call it "cow's back rain" Anyone who has lived in mountainous areas for a long time or frequented mountainous areas knows that the weather in mountainous areas is complex and changeable, and such weather changes often occur. This beam is full of dark clouds, but that beam is full of sunshine. The wind and rain on this slope are fierce, but the weather on that slope is beautiful, so there has always been a saying that "ten miles is different from the sky." The reason of cow's back rain

This is due to the uneven distribution of rain clouds and uneven ground heating, which leads to strong and weak air convection in a small area, and it is easy to form a small thunderstorm in the afternoon to evening. In the past, "cow back rain" mostly appeared in mountainous areas, but now urban high-rise buildings have mushroomed, creating the necessary environmental conditions for the emergence of "cow back rain".

There are two conditions for the occurrence of "cow back rain": first, the high altitude in this city is affected by cold vortex or its edge; Second, there must be tall and complex terrain or features, so that a small cyclone (counterclockwise rotating air vortex) or a small anticyclone (clockwise rotating air vortex) can be generated when the air flows through. Small cyclone is beneficial to the formation of rainfall and the enhancement of rainfall potential, while small anticyclone can inhibit rainfall. Precautions for indoor lightning protection

1, pay attention to close the doors and windows to prevent lightning from hitting the room directly or prevent lateral lightning and ball lightning from invading? People shouldn't stand under the electric light. ? 3. Try not to call or answer mobile phones and landlines, and don't use telephone lines to surf the Internet. ? 4. Showers and solar water heaters should not be used. Because the water pipe is connected with lightning protection grounding, lightning current can cause casualties through water flow conduction. ? 5. Stay away from metal objects such as water pipes and gas pipes exposed from buildings. ? 6. Before the thunderstorm comes, disconnect the line and unplug the power supply. Don't let the TV, computer, etc. Lead lightning into the room and damage electrical appliances will cause fire accidents. ? 7. Don't pull the wires for drying clothes and bedding to the window or door, lest the wires cause death. ? 8. When going out in heavy rain, it is best to wear rubber shoes, which can play an insulating role. ? 9. When it thunders on the road, never stick your head and hands out of the window.