system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 why some areas rarely have thunders, while others have several in the year.

I grew up on the Balkans where there were often thunders. 2 times out of 3 if it rains - it thunders. Now I live in Berlin, and I've only witnessed three thunderous rains in 4 years. Tonight is the third time. I don't get it. ELI5 please.
gpt
To form thunderstorms you need conditions where a big mass of warm, wet air at low altitude can very quickly rise up to high altitude. Usually this happens in areas where a low, warm, and wet air current meets a high, cold, and dry one. The two masses of air basically trade places and cause the massive updrafts that form huge thunder clouds.