It's actually pretty underwhelming. My girlfriend is in Wuhan. She says it's fine. 2 weeks ago there were a dozen road that got some water pooling. Her supervisor, a lady who lives about only 20 minutes of drive away from their work place, were unable to get to work on time (in fact she got there in the afternoon), two weeks ago on a Tuesday. That's about it. She is fine and on time the next day.
The thing is every summer there are at least some roads in Wuhan that got water pooling under heavy rain. This year, there are more than average, but nothing unprecedented, even in the last decade.