88 points after DTK: (1) SPX pretty much followed the roadmap, dropping 88 points from 4718 after DTK turned RED. (2) at 2HR chart, the black MA line would normally generate a short-term bounce, before going down a bit further.
4558 as magnet: (1) if 4618 can not hold the next leg down, then 4558, the 38.2% retrace level would be a perfect zone to turnaround for orange W-5. (2) 4558 is not only a FIB level, but also happens to be the blue w-4 at a lower degree. (3) not to mention the black parallel line