Have friends in Grand Isle where Ida came ashore on August 29. They did not get electricity back until mid-January. We live a couple of hours north of GI and during the storm, I could feel our slab vibrating. Our house is 4200 sq ft so can you imagine the strength of winds it took to make that happen? A house a few blocks away shifted on the slab. Looked okay from the exterior but the homeowner, a friend of ours, said her house felt different after Ida. She had it inspected and that is when the shift was found. It had to be torn down.