Houston proper is not under evacuation. Houston proper is 60 feet above sea level and about 70 miles from the coast. The places under mandatory evacuation are all on the coast; Galveston, Angleton, Clear Lake. No need to panic if you're in the city, we won't flood like New Orleans, because we don't have any levees to be broken. I'm expecting high winds and rain, and for the power to go out, but Houston it ready for it. There seems to be some hysteria because of what happened with Katrina, but that type of flooding won't happen in Houston. It might flood but it will clear in a few hours.
Thanks for your thoughts.