Leaving Vicksburg (from what I figured out was the short runway airport), we flew on to New Orleans intending to land at KNEW Lakefront Airport. Weather reports indicated that Lakefront has less than 1 mile visibility and the big airport there KMSY had over 6 mile visibility. We elected to divert to KMSY. It puts us farther away from the French Quarter, but it just seemed like the prudent thing to do.