1 1/2 hours after arriving at work we had a powerful thunderstorm that dumped a lot of rain in a short period of time. This overloaded the storm drains in the street outside. The water decided to come into the basement, which created a flash flood. There was water everywhere and it took half of the day to clean it up, fortunately the damage was minimal but not a lot of work could get done.It is rare for this to happen, but when it does it is a bit of a disaster.