Thunderstorm Both lightning thunder weather phenomena. Is also a small-scale convective weather systems. It appears there must be strong cumulonimbus activity. So often showers, hail, high winds, tornadoes and other associated. Thunderstorm accompanied by rain showers, thunderstorms, said. Produce thunderstorms cumulonimbus thunderstorm cloud known as a thunderstorm called a thunderstorm cloud monomer, the level of its range about 19 km, duration of tens of minutes. There can be isolated clouds scattered thunderstorms, thunderstorms can form groups, in a few hundred kilometers to thousands of kilometers within a few hours to 10 hours duration. China Southern thunderstorm days than the north, the mountains than plains. Xishuangbanna, Yunnan Province and Hainan Island the most. Up to summer thunderstorms, there is more time to the afternoon. But sometimes at night because of the cloud radiative cooling, cloud temperature uneven, there will be thunderstorms, thunderstorms that night.