Why is lightning considered to be dangerous ?

Hint: Lightning is a naturally occurring electrostatic discharge in which two electrically charged regions, either in the atmosphere or on the ground, temporarily equalise, resulting in the sudden release of up to one gigajoule of energy.

Complete answer:
Lightning is a type of electrical discharge created by imbalances between storm clouds and the earth or inside the clouds themselves. This heat causes the surrounding air to rapidly expand and vibrate, resulting in the pealing thunder we hear just after witnessing a lightning strike.Lightning is the most underappreciated weather threat on the planet. It's also the most erratic.

One of the reasons lightning is so deadly is that it is difficult to predict when and where it will hit, let alone how it will behave when it does. Another reason lightning is so harmful is the destructive potential it possesses. The average lightning bolt has \[30,000\text{ amps}\] of charge, \[100\text{ million volts}\] of electric potential, and is hot, hot, hot at \[\]\[50,{000^ \circ }F.\]

Additional information:Lightning is also unpredictable in other ways. Lightning can strike from cloud to cloud, earth to cloud, air to cloud, or within a cloud. And lightning can take many other forms, from streak lightning, which looks as a single arc, to ball lightning, which appears as a luminous ball that floats in the air, may move slowly or quickly, or remain stationary, and frequently explodes with a loud explosion.

Note: It should be remembered that lightning does not only occur during thunderstorms. Although it is impossible to have a thunderstorm without lightning—thunder is the sound that lightning produces—it is possible to have lightning without a thunderstorm.