The miracle of Quran lies in the absence of inaccurate scientific statements. Rather than the presence of accurate scientific predictions. It wasn't sent to teach people science in the first place.
A statement like "the earth lies on the back of turtle and it's turtles all the way down" is an inaccurate scientific statement.
Quran would have certainly contained a lot of such boldly wrong statements, had it been written by a wise man of that generation.
But the fact that we can still debate on how the statements in the Quran is still scientifically accurate, through all generations, even though science is rapidly changing -- is a miracle in itself.
In most of the verses on science, Allah said "Don't you see.. ....?" which isn't to teach us a any new science, rather instructs us us to use our existing knowledge on science and reasoning to verify that God certainly must exist.
And that stood equally true in the flat world era, the round world era and the modern quantum era. Evidences change, though the conclusion remains the same, regardless.
That's the miracle.