i was Big on nostradamus in the early 80's
i was also big on Hal Linsdey i think word for word Hal linsdey is more correct than Nostradamus himself.
however that said, there are many ways to "see" the future! i believe nostradamus Looked into a chalice of water to see his.
so, no i dont think his prophecies are from God.
Joseph of Egypt had a bowl of some kind, i forget what it was called. but similar things were known to exist
as for his prophecies specifically, they are so NOT specific as to defy interpretations correctly. that anyone can say anything about them only after the fact.
a true prophet is not a diviner, or a soothesayer nor do they prophecy for money, and if God does give warnings that saves people from events before they happen, it is to intervene before it happens which means precise understanding.