On watch for (60-minute time frames):
1) a break below QQQ 112.69/SPY 215.30
2) MACD 9-ema cross below zero line
3) 13 ema cross below 34 ema
Should all three sell signals trigger in both the QQQ & SPY, my expectation would be for a minimum drop to SPY 212.70 & QQQ 110.70.