An upper level inversion may actually favor severe thunderstorm development because the inversion will prevent many smaller weaker thunderstorms from forming.

Question

Quizplus · Accepted Answer

An upper level inversion can cap the atmosphere and prevent weaker thunderstorms from developing. However, if there is enough instability and a strong enough trigger to overcome the inversion, severe thunderstorms can develop as they are able to punch through the inversion with their stronger updrafts. Therefore, an upper level inversion may actually favor severe thunderstorm development.

An Upper Level Inversion May Actually Favor Severe Thunderstorm Development