* U.S. jobless claims fall to a 2-1/2-year low
* Brent slips as euro weakens against the dollar
* OPEC revises demand, supply outlook higher
* IEA raises oil demand growth forecast, supply outlook
(Updates throughout)
By Jessica Donati
LONDON, Feb 10 (Reuters) - U.S. oil was up slightly on Thursday afternoon after a volatile day which saw it spike $1 on strong U.S. jobs data and talk the Saudi King had died, only to fade after reports Egypt's leader Hosni Mubarak would step down.
In London, Brent crude was down in choppy trade as the dollar climbed and OPEC reported a boost in January output.
"A bit of the premium has come out of the oil markets... Obviously, if it's a peaceful stepdown (by Mubarak) and anarchy stops on the streets, it will completely ease fears that of any remote possibility that the Suez Canal was ever going to be disrupted," said Rob Montefusco, at Sucden Financial.
March ICE Brent <LCOc1> was down by 68 cents at $101.13 a barrel at 1600 GMT having earlier risen by over $1 to $102.88 a barrel on reports that the Saudi king might have died. Saudi sources denied the reports [
]U.S. crude for March <CLc1> was up 21 cents at $86.92 a barrel after having risen earlier by $1 to as high as $87.77 a barrel as U.S. jobless claims were reported at a 2-1/2-year low.
"There's a little bit of rumbling on Europe and the euro is weakening and the dollar is strengthening... I'd say the stronger dollar is the main factor," said Simon Wardell, an oil analyst at Global Insight.
"The rumour about the Saudi King sent Brent higher and the Brent/WTI spread blew out and after the denials Brent pulled back. The concern was about a transition of power in Saudi Arabia with all this uncertainty about Egypt and the region going on," said Phil Flynn, analyst at PFGBest Research in Chicago.
Media reported that Egypt's President of 30 years may step down and the situation in the country would be clarified soon, while the head of the U.S. CIA said there was a "strong likelihood" Mubarak would go on Thursday. [
]Higher OPEC production also weighed on prices after the group's monthly report said its oil output rose to 29.72 million bpd in January, the highest level since December 2008. [
]But oil demand growth forecasts also rose, as both OPEC and the International Energy Agency adjusted their outlooks for consumption upwards.
OPEC revised global demand for OPEC crude up by around 400,000 bpd to 29.80 million bpd. The group warned that oil prices would act to balance out demand.
"The down risk for the total world oil demand forecast lies with international oil prices," OPEC said. "Should strong prices remain, this will lead to a reduction in the use of transportation fuels." [
]And the IEA said oil demand will hit a record 90 million barrels per day (bpd) by the fourth quarter of 2011 in its monthly report. [
]But the agency also added that rising OPEC production and comfortable oil stocks in developed economies should limit a further spike in oil prices.
"It's a robust report ... If you look at their communique it's a very clear message that, yes, the market tightened quite a bit in 2010," said Amrita Sen, an analyst at BarCap.
The Saudi king rumours helped push the premium for Brent crude over U.S. West Texas Intermediate (WTI) <CL-LCO1=R> to a fresh record on Thursday above $16 a barrel. A greater-than-expected crude stockbuild in the United States shown in data released the previous day hit the U.S. crude price.
(Additional reporting by Seng Li Peng; editing by Keiron Henderson)