Seepage in basement after sale of flip

[Jill Drebing]

We purchased a home on April 26th this year.  It was a vacant foreclosed home being sold as is.  Had a sale inspection with City, posted escrow and proceeded to rehab the home.   Completed all required repairs and updates.  Listed house in August, house under contract in 19 Days.  Home inspection completed, repairs requested completed & closed October 11th. October.  October 14th area was hit with a flash flood and City took in 5-6” of rain water in less then 24 hours.

Buyers now want to sue us because they claim we never disclosed seepage in basement.  Basement was bone dry for the time we owned property.  Said we lied and covered up repairs. Never repaired because there were no issues.  The flash flood caused a lot seepage and water in the basement.  We don’t understand how we can control an act of god and at what point is a closed deal done.

Anyone experience anything like this? 

Any advice?

Thanks