How to predict hail attack?

Hail forecast usually uses radar and other meteorological instruments to observe the weather. In order to predict the possibility of hail, meteorologists usually pay attention to some important indicators.

The first is the ambient temperature, because hail will only form in low-temperature airflow, and the height in the atmosphere is usually about 5 to 10 km. The second is air humidity, because high humidity contributes to the formation of clouds and can increase convergence ability. Finally, wind speed and direction will affect the movement and shape of clouds.

Hail, also known as hail, is a weather phenomenon, which is most common in summer or at the turn of spring and summer. Hail is a hard spherical, conical or irregular solid precipitation. It is some ice particles as small as mung beans and soybeans and as big as chestnuts and eggs.

Local or current thunderstorm and gale in the north +8 hail to 10:

Beijing Meteorological Observatory released at 20: 00 on June 27th: It's cloudy and cloudy tonight, with thunderstorms in the southwest and northerly winds in the south, with a minimum temperature of 26℃. There will be thunderstorms during the day and strong winds and hail in the local area tomorrow. The north wind is about 3, the gust is about 6, and the highest temperature is 30℃.

According to Shi Yan, a meteorologist from China Weather Network, a new round of large-scale heavy rainfall will start tonight, affecting 26 provinces, autonomous regions and municipalities such as Sichuan, Anhui and Shaanxi, with heavy rain in many places and local heavy rain.

During this round of rainfall, strong convective weather generally occurs in the north, and rainfall in North China and Northeast China is accompanied by strong convective weather such as thunderstorms, hail and short-term heavy precipitation. On June 28th, severe convective weather occurred in Beijing, Hebei, Tianjin, Shandong, Liaoning and other places, with local thunderstorms and strong winds, hail of 8 to 10, and local strong winds of 1 1, accompanied by short-term heavy precipitation.