Contextually the mist that went up was a phenomenon which happened during the week of creation, specifically on the third day. However, in conservative Christian doctrine this condition persisted until the time of Noah.
The Fountains of the Great Deep
The fountains of the great deep are channels through the crust and mantle of the original Earth through which water drained into the great deep. They were later used to flood the Earth in the time of Noah.
The Great Deep
The deep and the great deep are both translated from the same Hebrew word, tehom. The difference signifies a transition from the deep where Earth was created to when the great deep is in the interior of the Earth.
The Sign of Jonah
The sign of Jonah is one of those things which looks like a Biblical inconsistency and the various ways that Christian scholars have tried to resolve it are hopelessly contrived. On the face of it, it looks like Jesus lied.
What is a Fact?
Someone made the charge that we're denying science. It looked like the knee-jerk reaction of someone with a progressive agenda, a scientifically illiterate science worshiper (SISW). We attempted to explain two things:
Climate Change and Global Warming
As the waters evaporated after Noah's flood the cooling effect caused equatorial and polar glaciation. There were temperate zones in the Northern and Southern hemisphere.
Uniformitarianism exists to support the time scale needed in the popular science narrative of godless existence (SciPop) but it's not a testable hypothesis, so it's not scientific.
A classic example of the use of uniformitarianism is the calculation of how much has time has passed since the tectonic plates formed. Supposedly we can tell how fast the African and American continents are moving apart.
If you use the Bible to deduce something and conclude that there needs to be something else in the Bible to confirm it, you search the Bible to find what you deduced was needed. If you find it, you're on the right track.
From Noah to Peleg
It's possible to be precise with the timing of the tectonic breakup of Pangaea. The time-lapse from Noah's flood to Peleg, and from Peleg to Abraham is recorded in Genesis 11:10-26.