* Euro rises most versus dollar since July 2010
* Goldman Sachs goes long euro/dollar, targets $1.37
* Successful debt auctions help ease debt concern
* ECB's Trichet sees short-term inflationary pressures (Updates prices, adds comment)
By Wanfeng Zhou
NEW YORK, Jan 13 (Reuters) - The euro notched its biggest rise against the dollar in more than six months on Thursday following solid European debt auctions and after the head of the European Central Bank cited risks of short-term inflation pressures.
The ECB president, Jean-Claude Trichet, at a news conference after the bank's Governing Council kept interest rates at a record low 1 percent, said there is "evidence of short-term upward pressure on overall inflation, mainly owing to energy prices."
Although Trichet said that price stability was not under threat, his remarks drove expectations that the ECB could raise interest rates, helping to spark a round of short-covering on the euro. See [
]The euro climbed more than 1.5 percent to near $1.34, extending its sharp rebound this week. The euro was on track for its best weekly performance since March 2009. Analysts cautioned, however, the euro's downtrend is far from over.
"Trichet's frank acceptance of the nascent signs of inflation in the region and his pledge that the bank will 'do what is necessary' to control price pressures helped fuel a vicious short-covering rally in euro/dollar," said Boris Schlossberg, director of currency research at GFT in New York.
And strong demand at Spain's bond auction, one day after a solid Portuguese debt sale, helped ease pressure on peripheral bond markets. Analysts cautioned, however, that the sales represented a very small percentage of supply from those countries this year.
"We can make another run probably to just above $1.34, after which I would look to fade the move," said Paresh Upadhyaya, head of Americas G10 FX Strategy at BofA Merrill Lynch Global Research in New York. "From a longer-term perspective, the factors that are at play are euro negative. Funding concerns will continue to weigh on the euro in the first quarter."
The euro <EUR=EBS> climbed as high as $1.3376 on trading platform EBS, almost 3 cents above the day's low at $1.3088. It last traded up 1.7 percent at $1.336, on pace for its biggest one-day gain since July.
Traders cited steady buying from Asian central banks and demand from momentum players, options players and investment funds.
GOLDMAN GOES LONG EURO
Goldman Sachs on Thursday recommended going long euro against the dollar, targeting $1.37, saying European sovereign debt tensions will ultimately ease. See [
]"Our view has long been that European sovereign tensions will ultimately abate on a combination of better fiscal coordination, support from the strong euro zone countries for the periphery, solid growth in the euro zone as a whole and signs of reform success in the periphery," the firm said in a research note.
Analysts said the euro may see some support on speculation that a solution to the debt crisis may come soon. Top European Union officials are pushing for the bloc to increase the size and scope of the 440 billion euro ($574 billion) rescue fund.
German Finance Minister Wolfgang Schaeuble said on Wednesday that euro zone countries are working on a "comprehensive package," which may be agreed by February or March, to solve the crisis. [
]But Raghav Subbarao, currency strategist at Barclays Capital, said in the medium term there are still concerns about how debt problems will be resolved.
He said Portugal's snowballing debt-financing costs will ultimately force Lisbon to ask for a bailout, while Spain faces a hefty rollover of existing debt in April. Still, a bailout for Madrid was unlikely, Subbarao said.
The euro climbed to a one-month high of 1.2885 Swiss francs <EURCHF=EBS> ahead of an emergency meeting of Swiss unions and industry representatives, with the subject expected to be the record-strong Swiss currency.
The dollar fell 0.3 percent to 82.73 yen <JPY=> after U.S. jobless claims jumped to their highest level since October dented optimism about the U.S. economy, though analysts cautioned against reading too much into the data. See [
] (Editing by Leslie Adler)