I am now north of Dallas but still have my house in Montgomery County and the rain there is to be 8-12 inches. Last year during a terrible amount of water, rainwater came through the tile roof, put an inch of water on the first floor. It is a townhouse and those tile roofs are a problem. I have someone going to check my house after the rain event is over.
My house won't get flood water but one eight doors down from mine, during that rain last year, had flood water going through their back doors and flowing out the front door. That may happen to them again. They are elderly, he is frail, has trouble walking and the wife has Leukemia, cancer of the blood.