Why are cumulonimbus clouds spectacular and scary?

Cumulonimbus clouds are as huge as mountains.

It always brings heavy precipitation, including lightning, showers, showers, hail and other weather phenomena, sometimes accompanied by tornadoes.

Will cause natural accidents.

Cumulonimbus cloud, also known as thunderstorm cloud, evolved from cumulonimbus cloud, with a cloud base height of 400 ~ 1000m, but the cloud top can reach the tropopause (8000 ~ 12000m), and the whole cloud body is huge as a mountain. During the birth of cumulonimbus clouds, lightning will occur between clouds or between clouds and the ground due to the electrification effect of atmospheric electric field and temperature difference and the fragmentation electrification effect. Cumulonimbus clouds are usually accompanied by downpours, lightning and thunder.

Cumulonimbus clouds are clouds formed in the process of strong vertical convection, which almost always bring heavy precipitation, including lightning, sudden precipitation, sudden gale, hail and other weather phenomena, sometimes accompanied by tornadoes, and even produce strong external airflow or even downburst in special areas (an extremely dangerous convection, which has a great impact on aircraft and will cause aircraft crash and death, and is one of the disastrous weather that civil aviation and air force try their best to avoid).