I have been observing in some cases (like now) the SPX MACD "seeks" to maintain the current slope, unless of course it encounters some trend line resistance. This is especially true now considering the counter reaction to the massively overstretched condition of 3/23. I thought the direction was changing earlier to down but it has not so far, it is still up. So I observe the current slope is about 14-15 points a day upward. News seems at worst to temporarily enhance or restrict this slope progress, though I expect in certain critical cases it can break the trend line in effect.
So with that in mind, observe that Friday's down action burned this amount of points (14-15), and today's up action so far also burns about the same. This is largely affected by what index values are falling off the 12 and 26 day EMAs. Assuming this continues, the expectation for tomorrow would be up but less (see my sheet for ideal projection).