A simple comparison of SPX and VIX on weekly chart here. While the VIX index is pushing against the lower support, SPX is seems to be in a very good uptrend, The VIX could and has remained in the lower range for long duration ain the past but dynamics were different back then. Since late 2015 VIX has been very volatile itself and going by the current dynamics, it's probably reasonable to expect a bounce in VIX along with down move in SPX towards the lower support trend line.