The towering cumulonimbus cloud darkens the sky to a piercing black ... “It was great to be out in a convertible, racing the storm with the guy who wrote the song ‘Thunder Road ...

With that said, it should be noted that storm clouds are typically deep, mature, cumulonimbus clouds, unlike those mentioned in the study. But if we're in Looking For Silver Linings mode ...

Technically called “cumulonimbus flammagenitus,” pyrocumulonimbus clouds are a rare weather ... This produces thunder, rain, and occasionally even tornadoes. Lightning strikes from the storm ...

Supercells are typically also classified as severe thunderstorms, and tornadoes most commonly ... produced from cumulonimbus or thunderstorm clouds. A bigger hail stone signifies a longer lifespan ...

Sudden darkness and a cold wind can be signs that cumulonimbus clouds is approaching and there is a risk of strong wind gusts and tornadoes. Please refer to NHK’s guide on how to protect yourself.