I am naive on this subject, having only been through one tornado in Nebraska (we sought refuge in the basement of a small concrete building but the windows still blew out).

I would think there is an entrepreneurial businessman who digs ground based storm shelters. I suppose a back hoe, some bracing timbers, miracle board or concrete siding then a sturdy door? I would only suppose this could be done fairly cheaply. Maybe not even all the way underground and it could store preparedness equipment/goods as well.

Now that I think of it, NY does not seem a likely tornado area, so perhaps an in ground shelter is overkill b