* Euro <EUR=> hits 3-wk low vs dlr on weak Greek GDP, jobs
* Greek CDS rises as data raises solvency concerns
* Yen pares losses as intervention fears ease
(Adds comment, details, updates prices)
By Naomi Tajitsu
LONDON, Aug 12 (Reuters) - The euro hit a three-week low against the dollar on Thursday after weak Greek data highlighted the problems facing some euro zone economies, while the yen pared losses on easing fears of immediate action to stem the yen's rise.
The euro reversed earlier gains versus the dollar after Greek gross domestic product figures came in below forecast and unemployment jumped, which analysts said brought Greece's long-term solvency issues to the fore again. [
]Underlining such concerns, the cost of protecting Greek government debt against default rose, with five-year credit default swaps widening around 30 basis points to 795 basis points after the data. [
]"The Greek data reinforces concerns that the Greek authorities may back away from austerity measures and move towards haircuts or even sovereign default," said Lee Hardman, currency analyst at BTM-UFJ.
By 1111 GMT, the euro <EUR=> traded slightly lower on the day at $1.2821 after hitting a session trough of $1.2800, according to Reuters data. It retreated from the day's high of $1.2932, and was testing the 100-day moving average at $1.2807.
The euro extended its losses after tumbling 2.6 percent on Wednesday, its biggest one-day loss since October 2008.
"The euro sell-off we've seen this week has been down to concerns about the peripheral euro zone economies," said Jane Foley, research director at Forex.com.
Market participants said the euro was supported around $1.2800 and that the focus was on whether the single currency would fall below $1.2790, roughly the low hit on July 23, when the results of the European bank stress tests were announced.
The dollar <.DXY> rose 0.5 percent versus a currency basket to 82.679, its highest since late July. It extended gains made on Wednesday, when concerns about the U.S. and global economies triggered a wave of unwinding of short dollar positions.
INTERVENTION FEARS EASE
The dollar <JPY=> was 0.2 percent higher versus the yen at 85.35 yen after rising as high as 85.82 in early trade. It stayed close to a 15-year low hit on Wednesday at 84.72, in a move driven largely by a narrowing spread between U.S. and Japanese government bond yields. [
]The dollar had bounced against the yen in early trade, aided by market sources telling Reuters the Bank of Japan checked exchange rates with banks earlier on Thursday. [
].But it pulled away from the day' high after Japanese Finance Minister Yoshihiko Noda later reiterated the government's position that it is closely watching currency movements and that disorderly moves would hurt the economy. [
]"The market is somewhat disappointed that nothing significant came out of the Noda press conference on the policy front. His comments were largely neutral," Hardman said.
Noda's comments came after Japanese Prime Minister Naoto Kan was quoted as saying yen moves have been 'rough', and some analysts said this suggested Japanese authorities may be stepping up efforts to reign in yen strength. [
]"The prime minister is saying that currency movements are 'rough' and there have been discussions on currencies between the BOJ and the Finance Ministry, so you could say they've taken the next step towards intervention," said Lutz Karpowitz, currency strategist at Commerzbank in Frankfurt.
"If you look at the frequency of statements, you can clearly see that the efforts of verbal intervention are clearly higher than a week ago."
Still, he added that the dollar's latest slide against the yen has been a controlled one, and analysts say Japanese authorities may have difficulty justifying an orderly decline in the dollar against the yen. (Additional reporting by Neal Armstrong; Editing by Hugh Lawson)