Could you have Flame Strike’s underground despite it “roaring…

Could you have Flame Strike’s underground despite it “roaring down from the heavens”?

@JeremyECrawford Could you have Flame Strike’s (5th level spell) area of effect be underground despite it “roaring down from the heavens”? — Jaden Ray Fajardo (@songobobjf) October 12, 2017 The flame strike spell can be cast indoors. #DnD — Jeremy Crawford (@JeremyECrawford) October 12, 2017