It seems to me that the atheist who cites science as his reason for not believing in miracles has failed to understand science.
For, until science proves that miracles are not possible, it must remain silent on the subject. Science, however, has not and cannot produce that conclusion.
To do so, the proof must be testable and falsifiable–that is, other scientists than the discoverer of this law of nature must be able to reproduce , with equal results, the process that verifies the original conclusion.
Anything else is not science: Opinion, faith, dogma. But not science.