Meaning of the word "a storm in a tea cup" in English

What does "a storm in a tea cup" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

a storm in a tea cup

US /ə stɔrm ɪn ə ti kʌp/
UK /ə stɔːm ɪn ə ti kʌp/

Idiom

a lot of anger and worry about something that is not important

Example:
Their argument about the seating arrangement was just a storm in a tea cup.
Don't worry too much about it; it's probably just a storm in a tea cup.