What do you mean "thunderstorm turns to moderate rain"?

It's raining. It rains for a while in the morning, and it keeps raining in the afternoon. It doesn't rain much, which means that thunderstorms turn into moderate rain.

1, Thunderstorm, Pinyin; (Lei Zhenyu)

Interpretation; It rains for a while and it doesn't rain for a while.

Make sentences; Today's weather forecast says there will be a thunderstorm.

2, moderate rain, pinyin; (Zhongyu)

Interpretation; The rain is moderate.

Make sentences; It's been raining today, and I don't have an umbrella.