The power went down briefly this morning but has been steady ever since. Internet access is as stable as the power allows. This morning I went to the Central Mkt. at Weslayan and Westheimer. They were well supplied. The cashier who helped me was from Ft. Worth. I remember from a conversation that I had with someone on the Thursday preceding landfall that the Central Mkt. (an H.E.B.) store, would remain open to serve the community. My cashier from Ft. Worth said that the backup generator had failed, and they had only been open since Tuesday. I definitely remember than an H.E.B. on the Southwest Frwy (I59S) was one of the first stores to offer ice. The drive, though short, was tedious without traffic signals but most drivers yielded to each other with at least a modicum of grace. In any case, if you can get to the Central Mkt., you will leave well supplied, as long as you have enough gas to get there and money to spend when you do.
North Houston and Harris County, where most of my students live, has a large population without the money or gas to get to the Central Mkt. The Houston Chronicle Online has a link to information about what supermarkets are open. I didn't test it. I understand that some McDonalds are open, and people are going there for food, air conditioning, and to charge their cellphones and laptops. FEMA PODS look pretty scarce out there, as does electric power. Everyone that I am in contact with is faring OK, and I presume prospects will improve there over time. I hope they improve rapidly.