Here is a chart of measuring hurricane strength ....Harvey is a Cat. 1 so far

[Warpy]

11. That is truly horrible

After it comes onshore, it's just going to squat there in the same place. That means flooding will be massive well away from the storm surge area.

Best advice to anyone in the area is to fill the bathtub. The water will be potable as is for a couple of days, boil after that, and since the water will likely be shut down until after the storm passes, it will also give a source for things like flushing the toilet and washing a few dishes here and there.

Been there, done that, lived through it.