Smoky — αἰθαλόεις

Meaning

At XIX.12 the genitive αἰθαλόεντος qualifies πρηστῆρος, the descending whirlwind named at the end of XIX.11, not the accusative bolt itself. Smoky or burning belongs to the word’s range; the supplied English chooses smoky. The fiery setting makes blazing intelligible too, but it does not justify categorically excluding smoke from the image.