By the numbers: How does Harvey stack up?

Houston pounded with relentless rain

A man waits to be rescued from his flooded home after the area was inundated with flooding Monday in Houston (Joe Raedle/Getty Images). (Getty Images)

(GMG) – As the Greater Houston area continues to be pounded by the relentless storm, we looked at the numbers: How much rain has fallen? How much more might be on deck? How does the weather event stack up, historically?

Here's what we know so far.