Zeus,
As you already discovered, it is Hurricane Allen circa August 1980. I was working in a grocery store in Houston at the time when they evacuated Galveston in what was then the largest peacetime evacuation in history.

Here is a link to an image taken at the same time as yours:

http://www.nasm.si.edu/exhibitions/lae/images/LE410L11.jpg

It is part of the Smithsonian collection. Here is the exhibit link that it is from (scroll down a little):

http://www.nasm.si.edu/exhibitions/lae/html/sat_clouds.htm

I'll bet that you can call the National Air and Space Museum in D.C. and they can ID the satellite that took your picture, or tell you if it is a mosaic of several shots.

Hope this points you in the right direction.

Ken