Traders should be sleeping well with the general lack of things to keep you up at night. However, danger is lurking below the surface of several markets.There really hasn’t been much to keep you up at night lately. Another year of generally excellent world crop production has kept a lid on prices. In fact, there was commentary today that corn and soybean trading ranges this year have been the smallest in over a decade. Wheat’s trading ranges would also have been in that same dull pattern had it not been for the Northern Plains drought in June and early July that propelled wheat futures sharply higher.Here are a few things to worry about:

There is increasing evidence that world weather is shifting towards a La Nina pattern. Some weather f...