The Perseids meteor shower is

The Perseids meteor shower is going on now. But there are also minor meteor showers making a show as well. The Alpha Capricornids and the Kappa Cygnids can produce slow-moving meteors. Alphas with some fireballs; Kappas are sometimes quite bright with fireballs. Could it be one of those that you saw? If I've done the calculations correctly, the International Space Station was not over North America at that time. For future and past sightings of the ISS and satellites, see: 
(click on SkySearch)