Will the thunderstorm last all day? Usually a few hours.

Thunderstorms don't last a day, usually about an hour.

Thunderstorm is a shower phenomenon accompanied by lightning. Produced under thunderstorm cumulonimbus clouds. It is characterized by large-scale cloud movement, which is much more violent than showers and accompanied by discharge, and is common in summer. When showers come, there are often strong winds and thunderstorms. Persistent and intense thunderstorms can often reach the level of heavy rain.

Reasons for formation:

When the small water droplets in the cumulonimbus cloud constantly collide and merge into larger water droplets, they begin to fall, while the hot air rising from the ground keeps rushing upwards, and the friction between them is charged. The rising airflow is positively charged and the falling water droplets are negatively charged.

With the passage of time, a large number of positive charges have accumulated at the top of cumulonimbus clouds, while many negative charges have accumulated at the bottom. Due to the negative charge at the bottom of cumulonimbus clouds, the ground is also positively charged.

The water droplets in the cloud merge and increase until the rising hot air can't hold it, and then fall straight from the cloud. The hot air at the lower level was drenched by rain and suddenly became cold. Instead of rushing up, it turned to the ground. At this point, the charge in the air began to discharge, accompanied by thunderous thunder.

Refer to the above? Baidu encyclopedia-thunderstorm