A thunderstorm is an atmospheric phenomenon associated with lightning, thunder, and cumulonimbus clouds, often accompanied by torrential rain, strong winds, or hail. It forms during intense convection (the rising of warm, moist air), when water vapor turns into ice crystals and a strong electrical charge is generated.
According to Wikipedia and the Fire Department, this refers to:
- Electrical phenomena: Lightning between clouds or between a cloud and the ground.
- Acoustic phenomena: Thunder caused by the expansion of air heated by lightning.
- Weather conditions: Heavy rain, gusty winds, hail.
The life cycle of a thunderstorm (20–30 minutes to several hours):
- Cumulus stage: Moist, warm air rises and forms a cloud.
- Stage of development: A massive cumulonimbus cloud with an anvil is forming; precipitation and lightning are beginning.
- Dissipation stage: The outflow ceases, and the storm dissipates.
Thunderstorms are classified as frontal (associated with the passage of a weather front) and convective (forming on hot summer days). For safety during a thunderstorm, it is recommended that you avoid staying in open areas, under isolated trees, or in the water.


