According to an article in the Charleston Gazette-Mail, the Chaos game with Palmetto FC was canceled just after the 7 PM start time, because of the approaching storm.
The local national guard had to help hundreds of supporters who were in Coonskin Park or at the game, to remove downed trees so they could leave. The storm consisted of heavy rain, lightning and high winds, of up to 75 MPH.

That's an understatement.. NASTY storm

True, they tied 1-1 in Sunday's makeup game, though. The Chaos have a real shot at their first playoffs.