Hail is a common meteorological disaster in China. It not only has a strong destructive power, but also “goes faster and fasterâ€, and the forecast is difficult. Many people have such doubts about the hail, the summer weather is very hot, why is there a hail?
Let us first see how the hail is formed. According to the Southern Network, hail is a strong convective weather phenomenon, often accompanied by strong thunderstorms. In the development of strong convective clouds, the height of the cloud top can reach more than 10,000 meters, and the temperature there is minus 30~40 °C. The ascending airflow in the cloud continuously sends the water droplets growing in the lower part of the cloud to the middle of the cloud to become supercooled water droplets. The sinking airflow in the cloud can bring the upper ice crystals and snowflakes to the middle, and the supercooled water droplets collide with the ice crystals to form the hail. Core. The hail nucleus rises, moves, and increases with the ascending and sinking airflows in the 0°C layer of the cloud, and grows larger and larger like a “snowballâ€. When the ascending airflow can no longer hold the ever-increasing hail, it falls. Go to the ground to form the hail we see.
So why do you have hail in the hot summer? According to China Jiangsu Network, meteorological experts explained that hail is originally a kind of severe weather in spring and summer, and it is also a kind of strong convective weather, although the probability of occurrence is much smaller than lightning, strong wind, short-term heavy rainfall, etc. But it is also normal. Although the summer temperature is high, the temperature at high altitude is still below zero, and the hot air current containing a large amount of water vapor rapidly rises to the upper air, and the cooling turns into water droplets and turns into ice beads. The hail is produced during the convective movement of cumulonimbus clouds and strong air. The winter air is relatively stable. The upper and lower "airflow difference" is not as large as summer. The vertical convection of air is not strong in summer, so it is not easy to form hail.
The hail is strong and strong, and it is often accompanied by winds such as squally winds and heavy precipitation, and the hail will cause certain damage. So what do we do when we encounter the hail weather? Hebei News Network gives the following suggestions: Old people, children should not go out and stay at home; properly place outdoor items that are susceptible to hail; if outdoors, use rain gear or other substitutes to protect the head and transfer to a safe place as soon as possible Temporary avoidance, while remembering the emergency flood control - "When you come to the wind, the wind will turn your head", so as not to be hurt by the hail; don't enter isolated shacks, booths, etc. or stand under the big tree; Keep away from lighting lines, high voltage wires and transformers to prevent electric shock.
If you are driving when you are hail, you should reduce the speed and slow down the impact of the hail and the vehicle; park the vehicle in the nearby underground parking lot as soon as possible; if there is no garage, try to enter the shelter, but do not stop under the tree; outdoor parking When you avoid the hail, you should turn on the double flashing light. When it is dark, turn on the width light to remind the rear vehicle.
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