Causes of hail in summer

The causes of hail in summer are the influence of high temperature and strong sunshine in summer, thunderstorm weather, geographical environment and natural environment.

1, high temperature and strong sunshine in summer

Hail generally appears in summer, mainly because of the hot weather and strong solar radiation in summer. The surface temperature is close to 40℃, and the air humidity is relatively high, which is very beneficial to the formation of cloud density. When the temperature rises and the surface temperature reaches a certain height, hot air will flow upward and clouds will rise. When the height of the cloud is high, the water vapor in the cloud will condense into water droplets, which will float to the sky with the rising air.

2. The influence of thunderstorm weather

Strong thunderstorm weather is also an important cause of hail. When hot air and cold air keep rubbing up, it will produce great turbulence. This kind of turbulence will make the water droplets in the cloud move violently, resulting in the shape of water droplets changing easily. When the temperature difference between the inside and outside of the cloud is large, the water droplets in the cloud are easy to freeze into hail, which is more likely to form hail.

3. The influence of geographical environment

The occurrence of hail is also influenced by geographical factors. In tropical and subtropical regions, due to the influence of desert and ocean, the temperature is high and humid, which is very favorable for the formation conditions of hail. In cold polar regions, due to the influence of temperature and ocean circulation, the conditions for hail formation are relatively poor.

4, the influence of the natural environment

In addition to the above factors, the formation of hail is also affected by the natural environment. For example, due to the influence of the solar cycle, when the air flow in the atmosphere is distorted, an eccentric gas vortex is formed, which can quickly cool the water droplets in the atmosphere and may form hail.

Precursors of hail:

1, feeling hot and cold.

Feeling cold and hot is a precursor to hail. If the hail season is cool in the morning and humid, and the solar radiation is strong at noon, resulting in strong air convection, it is easy to develop into cumulonimbus clouds and form hail. This is because the humidity is high at noon and the solar radiation is strong, which leads to strong air convection, thus forming hail. Therefore, it is a reasonable explanation that it is chilly in the morning and bloody in the afternoon. At the same time, heavy dew in the morning and fierce hail in the afternoon are also one of the precursors of hail.

Step 2 listen to thunder

Listening to thunder is a precursor to hail. The thunder and echo in the hail cloud are mixed together, which sounds continuous and gives people a dull feeling. This is because the frequency of horizontal flash in hail cloud is higher than that of vertical flash, and the range is wide, and the thunder and echo from various parts of lightning are mixed together. Therefore, when thunder is dull and continuous, it is very easy to hail.