Odd, intermittent and slow strobing light. Strobing was random and bright white.

While traveling southbound on I-59 near Ashville, Alabama, an odd light, which strobed at random, intermittent, intervals, was identified.  
It moved through the sky at a varied pace, much like a helicopter could do, however the light was slowly brightened and dimmed unlike a conventional aircraft, which flashes or blinks at timed intervals.  
Elevation seemed to high to be a drone and the light was too bright.