* Tensions flare in Libya, Suez as MEast unrest spreads
* Dollar softens after U.S. unemployment claims climb
* Silver rallies to within 10 cents of 31-year high
(Updates prices)
By Amanda Cooper and Jan Harvey
LONDON, Feb 17 (Reuters) - Gold prices extended early gains to five-week highs on Thursday as flaring tensions in the Middle East region added to impetus from a retreat in the dollar and simmering concerns over rising inflation.
Its strength buoyed silver prices, which rallied to within 10 cents of the 31-year high it hit earlier this year.
Gold is set for its strongest weekly performance since the start of the year as unrest in the region spread, boosting other perceived safe-haven assets like the Swiss franc <CHF=>, which rose 0.9 percent on the day and U.S. Treasuries <US10YT=RR>.
Spot gold <XAU=> rose to a five-week high at $1,384.30 an ounce and was bid at $1,383.20 an ounce at 1633 GMT, against $1,374.20 late in New York on Wednesday. U.S. gold futures for April delivery <GCJ1> rose $8.90 to $1,384.00.
The metal has erased some of the decline it posted in January, its worst-performing month since Dec. 2009, as investor confidence in the metal's underlying strength improved.
"The market is tending to be a little on the long side at these levels, because they are beginning to have faith," said ANZ Bank analyst Peter Hillyard.
"The mood of the market is that an inflation story, a war story, an Egypt story, a Bahrain story will all be bullish for gold, because the market is looking for those at the moment."
The prospect of rising inflation, not only in areas currently affected by the phenomenon like China and India, but also in the United States and Europe, has become an oft-cited reason to hold gold in recent weeks. [
]The dollar declined 0.4 percent versus a currency basket <.DXY> after data showed U.S. core consumer prices rose at their fastest in over a year in January and new unemployment benefit claims climbed faster than forecast last week. [
]Weakness in the U.S. unit tends to lift gold's appeal as an alternative asset and make dollar-priced commodities cheaper for holders of other currencies.
UNREST SPREADS
The metal is also taking support from haven demand as unrest spread across the Middle East after protests earlier in the year unseated leaders in Tunisia and Egypt.
"Upheavals in Libya and Iranian warship threats in the Suez Canal shifted market sentiment and pushed gold upward," said Barclays Capital in a note.
Iran appeared intent on sending two warships through the Suez Canal in a move that Israel has called a "provocation", putting Egypt's new military rulers in an unwelcome diplomatic spotlight. [
]Clashes broke out in several towns in Libya after the opposition called for a day of protests, reports and a witness said, while supporters of Libyan leader Muammar Gaddafi rallied in the capital. [
]The World Gold Council said overall demand for gold is likely to remain firm this year, driven by buying from India and China, as it released a report showing consumption of the precious metal rose to a ten-year high in 2010. [
]"We continue to see the two largest markets, China and India, driving the market," the WGC's investment research manager Eily Ong told Reuters.
"There have been rising income levels, still-high saving rates and we still think strong economic growth will continue to push up gold consumption."
Silver <XAG=> rose 1.6 percent to its highest since Jan. 3 at $31.13 an ounce, and was later at $31.10 an ounce against $30.63. Palladium <XPD=> was down 0.25 percent as $835.88, and platinum <XPT=> rose 0.4 percent to $1,834.
(Reporting by Jan Harvey and Amanda Cooper)