What do you mean by a cloud plus a lightning plus 30%?

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. In the weather forecast, there are signs of thunderstorms, which means intermittent precipitation accompanied by lightning and thunder.

The main contents of weather forecast are the future rain, maximum and minimum temperature, wind direction and wind force and special disastrous weather in a region or city. As far as China is concerned, meteorological stations can accurately predict the location and intensity of natural disasters such as cold waves, typhoons and rainstorms, and can directly serve industrial and agricultural production and people's lives.