The initial blast of Thunderstorm is a strong ozone scent. Though it has a shadow of the smell before a thunderstorm, it's actually too strong to be realistic at the beginning. The scent then gradually mellows into a mixture of green grass with drops and dirts, muds dipping in water, as if the rain has already finished. This aroma of after-rain slowly fades away during about the 5-hour wear. Althought it's not a conventional perfume, I find it pretty wearable and refreshing for a hot summer day. A very interesting olfactory experience to try.