The photos are from on or around August 12th.
One person thought he found a reason:
But they don’t all seem to be streetlights.
Several papers, including The Houston Chronicle, reported on it.
A local TV channel, an NBC affiliate, KPRC Channel 2, did a couple of pieces on it.
http://www.click2houston.com/news/ufo-photo-sparks-interest/27435252
http://www.click2houston.com/news/new-video-of-possible-ufo-over-houston/27462562
OK, Fine would like to hear more about it if anyone out there knows about it.