From last night close, the percentage of stocks trading above their 200 day simple moving average is above the 50% mark. Given over night action from North Korea, the more weakness is expected. These conditions indicate weakness and most of the times corrections are expected. From the picture below, you can see that from 714
The Federal Reserve is widely expected to raise its benchmark interest rate and may also provide details on its plans to shrink $4.5 trillion of assets it amassed to nurse the economic recovery. Economists polled by Reuters overwhelmingly see the Fed raising its benchmark rate to a target range of 1.00 percent to 1.25 percent.
Here is some data to carry forward to 2017 with just a few trading hours left this year, The UK Referendum and the US Elections were two events that created  short term spikes in volatility. However, the real impact will be measure in years. GOLD in various currencies (1980 to Nov-end 2016) WORLD Indexes YTD