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* Euro rises back above $1.13 as market awaits Fed decision
* Any dollar downside on policy hold may prove limited
* Yen dips after start of European trade
* Franc inches higher after SNB holds fire
By Patrick Graham
LONDON, Sept 17 (Reuters) - The euro crept back above $1.13 on Thursday ahead of the most keenly watched policy decision in years by the Federal Reserve which is, on balance, expected to hold off from a rise in U.S. interest rates.
Traders and analysts are divided on the likely impact of a variety of combinations of tones and decisions by the world's most influential central bank.
However, in the absence of a rate rise, only an extremely dovish message seems to hold much danger for the dollar.
"If they do hold off, you are probably going to see some kind of (downward) reaction," said Ian Stannard, head of European FX Strategy at Morgan Stanley (NYSE:MS) in London.
"We see any volatility around the FOMC as a buying opportunity on the dollar. Even if they don't go now, they are in the process of preparing the ground to do so. On that basis, any kind of dip in the dollar could prove short-lived."
Analysis by French bank BNP Paribas (PARIS:BNPP) shows that a steady erosion of bets for more appreciation since March has left positioning on the U.S. currency flat, meaning relatively few longer-term players will be forced to sell if the Fed does not deliver a rise.
Early attention in Europe focused on the Swiss National Bank, which made no changes to official interest rates that are already deep in negative territory. ID:nZ8N0XO00L
There had been some rumours of another cut by the bank and the franc inched higher after the SNB's statement. UK retail sales may also have an impact on sterling after a bullish labour market report on Wednesday.
With the Fed firmly in focus, market participants took in their stride Standard and Poor's downgrade of Japan's credit rating by one notch to A+ late on Wednesday. The cut brings its rating in line with those of rivals Moody's Investors Service and Fitch Ratings. ID:nL4N11M3PV
Investors also shrugged off data on Thursday that showed Japan's exports slowed for a second straight month in August, heightening fears that China's slowdown was increasing dragging on the global economy and reinforcing expectations that policymakers eventually would be forced to muster fresh stimulus steps. ID:nL4N11K32W
The dollar was trading at 120.94 yen JPY= , up around a third of a percent from late U.S. trade. Against a basket of currencies .DXY , it was down just over 0.1 percent at 95.267, well above a three-week low of 94.913 plumbed on Monday.
"While the rates decision will be the initial focus, it may not be the decisive factor for markets," wrote Sean Callow, senior currency strategist at Westpac in Sydney, who says investors could also react to changes in the central bank's forecasts.
"We will also see quarterly projections of growth, unemployment, inflation and the funds rate. This should include upward revisions to GDP projections but a lower profile for interest rates," Callow said in a note to clients on Thursday.