FOREX-Dollar up versus euro after mixed U.S. data

* Mixed US fails to offset concern about euro zone outlook

* Euro jumps earlier vs Swiss franc, SNB declines comment (Adds comments, details. Updates prices)

By Vivianne Rodrigues

NEW YORK, Feb 18 (Reuters) - The dollar rose versus the euro on Thursday in a volatile session, as mixed data highlighted the fragility of the U.S. economy but failed to offset investors' concerns on the outlook for the euro zone.

Demand for the greenback fell following an unexpected jump in weekly U.S. jobless claims, while the government separately reported a higher-than-expected rise in January producer prices. For details see [ID:nN17140882] and [ID:nN17190691].

Other data released later indicated improvement in regional U.S. economic activity, which helped stocks rebound from a lackluster opening.

The reports "are not necessarily good for the dollar overall... but we'll see the dollar appreciate," said Andrew Busch, a global FX strategist, at BMO Capital Markets, in Chicago. "For currencies, it's going to be a little bit more mixed."

In midday trading in New York, the euro was 0.2 percent lower at $1.3581 , after climbing earlier to as high as $1.3653. Against the yen, the dollar was little changed at 91.38 yen , after trading as low as 90.59 yen.

Selling pressure on the euro remained high. Analysts said there were concerns that if countries such as Greece implemented the fiscal measures needed to cut their debt it would weigh on euro zone growth, and the European Central Bank would be slower in tightening monetary policy.

Implied euro zone interest rates fell earlier on Thursday and a release showed euro zone consumer confidence declined in February for the first time in 10 months. [ID:nLDE61H29N]

"Deficit concerns are not going to dissipate any time soon, so it's just a question of when (the euro) break out of this $1.35-$1.38 range," said Brian Dolan, chief currency strategist at Forex.com, in Bedminster, New Jersey.

A break in the euro below $1.35 could pave the way for a further drop to the $1.32-$1.33 area, he said.

Earlier, the European currency jumped versus the Swiss franc, trading as high as 1.4688 francs, according to Reuters data.

Recent sharp moves in the Swiss franc came amid talk of central bank intervention but this time traders and analysts cited "large bids" at the 1.4645 level and did not see signs of official buying.

The euro was last trading little changed at 1.4660 Swiss francs . (Additional reporting by Steven C. Johnson and Wanfeng Zhou in New York; Editing by Leslie Adler)