Storm in a teacup is an idiom which is used when a matter of little or no importance is exaggerated and blown out of proportion.
It is used to describe a situation where uproar is created over a seemingly trivial issue.
"Much ado about nothing" is also an apt description.
The expression can also be put forth as “Tempest in a teapot".
1. The minister dismissed the allegations of the opposition as a mere storm in a teacup.
2. Some environmentalists are of the opinion that all the hypes created about global warming is nothing but a storm in a teacup.
3. Sachin Tendulkar's comments about Mumbai being part of India were not accepted in the true spirit by many and ended up creating a storm in a teacup.