By Christopher Johnson
LONDON (Reuters) - Oil prices slipped below $50 a barrel on Thursday after weak Japanese data sounded alarm bells over the prospects for global growth, outweighing the bullish impact of a bigger-than-expected decline in U.S. crude oil stocks.
Japan's exports slowed for a second straight month in August in a sign China's economic slowdown could be damaging the world's third-biggest economy.
The data follows worrying figures from other Asian economies - including South Korea and Taiwan - which are increasing anxiety over the consequences of a sharp slowdown in China.
North Sea Brent crude oil was down 25 cents at $49.50 a barrel by 0830 GMT, after hitting an early high of $50.14. U.S. light crude oil was down 30 cents at $46.85 a barrel.
Both global benchmarks had rallied sharply over the last three days as the dollar weakened on expectations that the U.S. central bank, the Federal Reserve, would maintain interest rates at their current, very low, levels.
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The Federal Reserve is due to issue a policy statement at 2 p.m. EDT (1800 GMT) on Thursday and economists now see about a one-in-four chance of a U.S. rate increase.
Higher U.S. interest rates would be likely to boost the U.S. currency, making dollar-denominated oil more expensive for importers holding other currencies.
This week's rally has made a further sharp sell-off in oil less likely, said Robin Bieber, a technical analyst and director of London brokerage PVM Oil Associates.
"It's out of dump-danger at the moment," Bieber said.
U.S. oil data this week suggested the world's biggest oil market may be beginning to tighten.
The U.S. Energy Information Administration on Wednesday reported the largest crude drawdown since February 2014 at the Cushing, Oklahoma, delivery point.
"This is a result of higher refining activity and lower U.S. crude production, which is helping the U.S. inventory glut to ease off," Daniel Ang, analyst at Singapore brokerage Phillips Futures, said.
U.S. oil output has begun to ease after six years of sharp increases. EIA data shows U.S. crude and condensate output peaked at 9.612 million barrels per day (bpd) in April and had declined by 316,000 bpd by June.
But the world is still awash with oil, with global production still running at more than 2 million bpd above demand, filling oil stockpiles around the world.
(Additional reporting by Henning Gloystein in Singapore; Editing by Dale Hudson)