Some possible explanations that may be catalysts for the market move:

Peter Boockvar sees shifts in the monetary policy as the main drivers.
German ZEW index which measures German investor confidence in the German economy rose to 20.6. ...since August 2015...The prospects for the eurozone as a whole are gradually improving...EU Trade Surplus...
Whole Article:
http://kingworldnews.com/here-is-what-is-pushing-the-gold-silver-markets-higher-today/

Looks like the confidence in the dollar is dipping:
Jason Goepfert at SentimenTrader: People are starting to give up on the idea of a strong dollar.
Not coincidentally, that’s also about when web searches for a “strong dollar” were reaching a fever pitch.

Whole Article:
http://kingworldnews.com/look-at-whats-going-on-with-the-dollar-and-how-it-will-impact-gold-silver/

China is mentioned again to create a new Global Monetary System.