I just learned this information the past couple of days but it seems it's been out the past couple of years.
Many many articles about some asteroid/meteor event about 13,000 years ago.
http://www.space.com/14793-comet-earth-impact-younger-dryas.html
Just google that, many articles.
Combine that with evidence of great floods happening all over the world around 13,000 years ago.
https://docs.google.com/document/d/1sXjqFo9osUO4pWfxsx3Brb565KvqfVIaP1vtDGa95tg/edit?pli=1
The above google document lists many sources for many different floods worldwide.
Also if note is that it's been recently studied and accepted that most of the water on Earth did not originate in Earth's creation. Earth had some water, but much more water was added by asteroid or meteor shower.
If the Noah story is somewhat accurate, that explains how the floodgates of heaven opened up. Imagine a meteor storm of rain.
Whether you believe it as the bible says or not, there are flood stories across ancient civilizations all over the world. Whatever happened about 13,000 years ago, there were massive floodings happening all over the world.