The resistance line that has been in place middle of last year was retested again at the beginning of April , unsuccessfully. 1HR Fibonacci shows downward trend, SPX500 hit 0.7 level and started falling. for almost all time frames is above 50%.
Test of structure at 1998.6 and if it breaks it (highly likely) it should fall down to 1821.4, another structure.
Also, there is a 'head and shoulders' pattern in 1HR chart with right shoulder indicating crash.