@JeremyECrawford can a spell such as fireball go past it's 20ft radius if the point of origin is set in an enclosed space?
— kyle brooks (@brooksie014) July 6, 2015
The fire of the fireball spell can spread around corners, but it's limited by the spell's 20 ft. radius. https://t.co/PQWsuyNkiX
— Jeremy Crawford (@JeremyECrawford) July 7, 2015