* Africa/Mideast unrest, Iran Suez Canal intent supports
* U.S. economic data mixed, jobless claims above forecasts
* Coming up: CFTC positions data, 3:30 p.m. EST on Friday
(Recasts with surge in U.S. crude prices)
By Robert Gibbons
NEW YORK, Feb 17 (Reuters) - U.S. crude futures rose 1 percent on Thursday in volatile trading on concerns about Egypt-style protests in oil-producing regions that kept the potential for supply disruption in focus.
Brent crude fell from a near a 2-1/2 year peak as traders unwound spreads, narrowing the premium of Brent to its U.S. counterpart <CL-LCO1=R> after it reached a record high earlier.
Brent crude for April delivery <LCOc1> edged down 29 cents to $103.49 at 1:10 p.m. EST (1810 GMT), off an earlier $104.30 peak. Wednesday's Brent close was the highest since September 2008, as was the intraday peak of $104.52.
U.S. crude for March delivery <CLc1> rose $1.36 to $86.35 a barrel, up 1.6 percent and its biggest percentage gain in two weeks. The March contract expires next Tuesday.
"It looks like there are more fears about unrest going on in the Middle East with the issues about Iran trying to put warships into the Suez canal," said Mike Zarembski, senior commodities analysts for optionsXpress in Chicago.
"Brent is actually a bit weaker here and it looks like there may be a bit of squaring off of that position and a bit of profit taking for those lucky enough to be long Brent and short WTI."
A Reuters poll of analysts and banks on Thursday forecast that Brent prices would drop later this year as the risk premium from unrest in the Middle East ebbs.
"The current price is unsustainable," said Carsten Fritsch, commodity analyst at Commerzbank in Frankfurt. "Tension in the Middle East should calm down at some point, whereas (North Sea) output should normalize."
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POLL-Oil price to fall [
]Interactive graphic on Middle East unrest:
http://r.reuters.com/nym77r
Graphic of asset returns in 2011:
http://r.reuters.com/suc97r
Reuters Insider news bulletin on Reuters oil price poll:
http://link.reuters.com/xet97r
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Clashes with protesters in Bahrain, Libya and Yemen kept investors on edge. [
] [ ] [ ]Tensions between Israel and Iran remained a factor amid uncertainty about Iran's plans to send navy ships through the Suez Canal, after Israel's foreign minister called the intention provocative and markets were rattled on Wednesday.
Iranian state TV said on Thursday that two Iranian warships were due to pass through the Suez Canal, the first such passage by the Islamic Republic's navy since Iran's 1979 revolution. [
]But Suez Canal officials said they had no notification so far that the Egyptian government would allow the two Iranian naval ships to cross the waterway. [
]Tensions about navy ships in the canal came as Iran planned to prosecute opposition leaders for protests. [
]U.S. economic data was mixed and did not provide directional momentum for oil prices, brokers and analysts said. January core consumer prices rose at their quickest pace in more than a year and above expectations. [
]Separate reports showed U.S. initial jobless benefit claims rose more than expected, while the Philadelphia Federal Reserve Bank said its business activity index rose in February to its highest reading since January 2004.
The dollar index <.DXY> weakened as the Swiss franc benefited from safe-haven appeal and the euro gained after solid a Spanish debt auction. [
]A weak dollar usually lifts dollar-denominated oil prices because it lowers the cost to consumers using other currencies and also the value of greenbacks paid to producers.
"The global benchmarks Brent and WTI (U.S. benchmark West Texas Intermediate) continue to be widely disconnected. Trading has been volatile, with Brent being affected more by developments with global impact such as the tensions in the Middle East," said Jacob Correll, commodity analyst at Summit Energy Services Inc in Louisville, Kentucky. (Additional reporting by Gene Ramos in New York, Anna Yukhananov and Christopher Johnson in London and Jennifer Tan in Singapore; Editing by Lisa Shumaker)