The yen popped in relation to the U.S. dollar today as it seems a given that the Federal Reserve will vote tomorrow to leave interest rates alone for the time being. The Japanese currency was up 1.00% in mid-afternoon trading.

Anyone dreading the Fed’s potential actions come Wednesday afternoon when its two-day meeting ends will find reason to head to the sidelines today and tomorrow, staying there till the statement is released.

As it becomes more apparent that the Japanese central bank will vigorously stimulate Japan’s economy, the yen continues to weaken and the U.S. dollar strengthens.