Does Moonbeam do damage when appears?

@JeremyECrawford [5e] Does Moonbeam do damage when cast since the creature is "entering" the beam when it appears?

— Thomas B. (@phivexDown) December 15, 2015

Moonbeam isn't intended to deal damage when it first appears. #DnD https://t.co/nKZgu5AHrA

— Jeremy Crawford (@JeremyECrawford) December 16, 2015

@Aneeria_rpgBut any creatures in the Moonbeams initial location would take damage when they start their turn correct? That's correct.

— Jeremy Crawford (@JeremyECrawford) December 17, 2015