(Updates prices, details on Japan crisis)
* Asian stocks stabilise as Nikkei rebounds from big losses
* More upbeat Federal Reserve view also helps calm nerves
* Nikkei up 4.4 pct but Japan still battling nuclear crisis
* Yen slips vs dlr after coming close to record high
* Oil extends losses to 3-week low despite Mideast unrest
By Raju Gopalakrishnan
SINGAPORE, March 16 (Reuters) - Asian financial markets rallied on Wednesday, with Tokyo stocks rebounding nearly 4.5 percent after a steep two-day sell-off on Japan's killer earthquake and unfolding nuclear crisis.
Other Asian stock markets were also higher, but news of another fire at the earthquake-damaged Fukushima Daiichi nuclear plant north of Tokyo and fears of more radiation leaks kept investors on edge.
"The market doesn't care about any fundamentals today. All eyes are on the nuclear plant and the Nikkei will move according to the news about the plant," said Norihiro Fujito, a senior investment strategist at Mitsubishi UFJ Morgan Stanley Securities.
Asian markets also received a filip from U.S. stocks, which closed down but off lows as a more upbeat view from the Federal Reserve helped limit Japan-related losses. The Fed stuck with its ultra-loose monetary policy but said the economy was gaining traction.
Tokyo's gains were led by short-covering by hedge funds, analysts said, adding that the market was still extremely volatile.
"The rebound is pretty strong as investors realised they may have panicked a bit too much yesterday," said Fujio Ando, senior managing director at Chibagin Asset Management.
"But it's mostly short covering by both domestic and foreign players, and not honest, active buying, because nuclear worries are still strong."
Japan's Nikkei average surged over 6 percent at one point, clawing back about a third of its losses since a massive earthquake and tsunami hit the country on Friday, but then slipped back below the psychologically important 9,000 point level.
By midday, it was at 8,981 points, up 4.37 percent. However, it was still down 12 percent from Friday's close. Osaka Nikkei futures were up 2.08 percent at 8.820.
Australian shares were up around 0.5 percent, led by a relief rally in uranium producers Paladin and Energy Resources of Australia , which had sunk on fears that many countries would scale back or suspend their nuclear power programmes in light of Japan's woes.
Stock markets in South Korea , Taiwan , and Hong Kong were also up and the MSCI Asia-ex-Japan index was up 0.67 percent.
The yen slid to around 80.8 to the dollar, on fears of intervention by the Bank of Japan after the currency surged toward its 1995 historic high of 79.75. Speculators were betting that the Japanese government and companies would liquidate overseas assets to pay for reconstruction.
The euro was subdued after Moody's downgraded Portugal's ratings by two notches and was last down about 0.2 percent on the dollar for the day.
"Event risk is going to play a huge role in deciding what the yen does this week," UBS currency strategist Gareth Berry told Reuters Insider.
"The key thing to watch really is what happens to the Nikkei index in Japan and if equities rebound from their lows. That will help support risk appetite and that will lead to a slightly weaker yen.
"The other thing to watch is how things unfold at the nuclear power plants. Any deterioration there is probably going to lead to further yen strength and conversely, as we hope the situation resolves itself safely, we could see risk appetite improve and that will naturally lead to a slightly weaker yen."
Brent crudeoil futures fell 75 cents to $107.77 a barrel, a three-week low, as the Japanese crisis offset increasing tensions in Bahrain. U.S. crude slid nearly 70 cents to $96.53.
Spot gold was up at $1,398 per ounce, but was yet to fully recover ground after investors sold off bullion to cover stock market losses.
(Additiopnal reporting by Anuradha Kanwar, Editing by Richard Borsuk)
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