I've never seen rain that hard. My shop is in the basement. I've got windows that you can look up thru but you can't see a lot. It was pitch black outside with a lot of thunder so I decided to walk upstairs and check it out. Everything in my area was dry when I went up. I stood there a few minutes talking and watching it pour. I all of a sudden noticed the sewers out in the street started erupting. All of a sudden a fella in the hall said there's water comming under the door of the mens room. We thought a pipe must have burst. We want in and that's when I saw the two toilets shootin water two feet in the air. It looked like geysers shooting out of them. I made a note to myself to never use the bathroom again there if it's raining I ran back down to call maint. and there was water pouring in a mechanical room. The refridgeration men from the shop next to mine were on the radio by then. The whole place flooded. Damage in the$$$$$$$$$$$$$ My shop stayed high and dry. For some reason it was one of the only basement areas to do so.  I went up to the 14th floor where I could see in all directions, and when the water in the streets went down enough to drive I booked. Mother nature wins again.