Other forms: tempestuously
A tempest is a storm, so you can use the adjective tempestuous to describe anything stormy or volatile — from a tempestuous hurricane to a tempestuous romance.
The adjective tempestuous can describe violent weather, but it can also figuratively describe something that just has the characteristics of such blustery and turbulent weather. People could be described as tempestuous if they're prone to violent mood swings and fits of passion. Impetuous is a synonym. The author Joseph Conrad once wrote, "To have his path made clear for him is the aspiration of every human being in our beclouded and tempestuous existence."