It's so hot in summer, why does it produce hail?

With the arrival of summer, severe convective weather is becoming more and more frequent, and hail is one of them. Hail is commonly known as hail, and some areas call it "cold children". What does a precipitate mean? Solid precipitation. It is a spherical or conical ice block, which consists of transparent layers and opaque layers alternately.

Hail is produced in strong convective cumulonimbus clouds. This kind of cloud is very high, and the top of the cloud can rise to a height above the ground 10 km. In this cloud, water vapor rises and cools with the airflow and eventually freezes into small ice particles, which constantly collide with the surrounding water vapor, supercooled water droplets and ice particles and grow up. As the ice particles grow up and increase in weight, the ice particles begin to fall.

Sometimes the strong updraft is lifted, so it rises and falls repeatedly in the cloud, and small ice particles become large ice particles, and the airflow can no longer support it, and finally falls to the ground. Because of the rapid descent, sometimes it is too late to melt into water, and it keeps the appearance of solid ice particles, which is what we usually call hail.

Why is there hail in summer?

In summer, the weather is hot and the sun is scorching the earth, which is easy to produce a lot of hot and humid air near the ground. Hot and humid air rises rapidly and the temperature drops rapidly, sometimes even as low as -30℃. The water vapor in hot air will condense into water droplets when it meets cold air, and quickly freeze to form small ice beads. Small ice beads roll up and down in the clouds, constantly absorbing the surrounding water droplets to condense into ice, getting heavier and heavier, and finally falling from the sky, which is hail. It can be seen that hail can only be produced when the hot and humid airflow rises strongly.

Harm of hail

Although the hail doesn't last for a long time, it usually lasts for a few minutes, but it is fierce and strong, and it is often accompanied by violent storms, so it often causes serious losses or even no harvest to agriculture in some areas. The harm of hail depends on the scope of hail, the size, duration and accumulated thickness of hail blocks. Hail is very harmful to crops and will cause mechanical damage to crops. Crop seeds and their development stages are severely damaged by strong hail attack or long-term hail. Crops in flowering or maturity are more seriously damaged than those in seedling stage, and even can cause devastating damage.

How to correctly defend against hail

Pay attention to the weather changes and prepare for hail suppression and lightning protection.

Old people and children don't go out and stay at home.

Properly place outdoor items susceptible to hail.

Drive poultry and livestock to safe places with roofs.

If you are outdoors, use rain gear or other substitutes to protect your head and move to a safe place as soon as possible.

If you are driving, please drive the vehicle to a sheltered place as soon as possible. If the vehicle is parked in the open air, please cover it as much as possible to reduce damage.

Do not enter isolated shacks, sentry boxes and other buildings or trees.