Often times RSI
is a good indicator of a trend reversal. This same trend can be spotted on the 4H chart. Read up on trend divergence. Inevstopedia is a good library for studying "Divergence." Basically the trend of price lows are running opposite the trend of RSI
lows. The downward pressure/momentum of the bear run is losing strength. This is a weakening sign that the market is going to reverse and momentum will build on the flip side.