* Euro highest since mid-November; rally may fade
* Dollar struggles as safe-haven flows dry up
* Aussie at 4-week high vs dlr, sterling 2-1/2-month high (Updates prices, adds detail)
By Steven C. Johnson
NEW YORK, Feb 1 (Reuters) - The euro hit a 2-1/2-month high on Tuesday, driven above $1.38 by solid global manufacturing data, though analysts said risk appetite could fade if worries resurface about Europe's ability to manage its debt crisis.
Markets considered the crisis in Egypt contained, easing fears it could spread across the Middle East, and that dented safe-haven demand for dollars. At least 1 million people gathered in Egypt to demand the resignation of President Hosni Mubarak, who said he would not run for reelection. For details, see [
]The euro rose as high as $1.3844 <EUR=>, its highest since early November, with gains accelerating after it broke above resistance at $1.3786. A close above $1.3750 would open the way for a run to $1.40, "a slam-dunk unless we get some kind of surprise from Europe about the sovereign debt crisis," said Dan Dorrow, head of research at FX execution firm Faros Trading.
Extending its gains further may prove difficult, though, and some traders said the $1.40 level would provoke selling.
"The euro anywhere near $1.40 is probably a sell if we get up there," said Firas Askari, head of FX trading at BMO Capital Markets in Toronto. "I still think there are some core fundamental issues in Europe that have not been addressed."
"When the whole world starts buying and talking about the strength of the euro," he added, "it's probably a good time to start fading it." The euro was last up 1 percent at $1.3831.
The European Union is said to be working on a plan to reduce Greece's debt burden.
The dollar, which saw a safe-haven bid late last week when protests in Egypt intensified, fell broadly as risk appetite returned, hitting a four-week low of 81.33 yen <JPY=> and falling 0.9 percent against the Swiss franc to 0.9355 francs <CHF>.
The Australian dollar rose 1.5 percent to $1.0115 <AUD=D4>, just off a four-week high, after policy makers gave an upbeat assessment of the domestic and global economy. [
]Traders said demand from Middle Eastern investors helped lift the euro while Asian sovereigns were also seen buying back euro positions sold earlier in the day.
ECONOMIES ON MEND, PRICES PRESSURES GROWING
Data showing the U.S. manufacturing sector grew at its fastest pace in nearly seven years last month bolstered hopes the economy was gaining traction, encouraging investors to wade into risky trades. Separate data showed Germany's jobless rate fell while euro zone factory activity accelerated.
Global manufacturing surveys also showed rising raw material prices, which analysts said would likely add to upward pressure on currencies from emerging Asia.
European Central Bank President Jean-Claude Trichet has also flagged inflation risks lately, and investors expect him to retain a hawkish tone on Thursday. [
] <^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ For link to euro zone PMI data [ ] Graphic on global inflation http://r.reuters.com/wuz46r ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^>Implied interest rate futures <ECBWATCH> suggest a nearly 80 percent possibility the ECB will raise rates by 25 basis points in August from the current record low of 1.0 percent.
High U.S. unemployment, meanwhile, and still manageable core inflation has investors betting the Federal Reserve will keep interest rates near zero for some time yet.
"Even with good news, the Fed will be on hold for a long time. That will increase flows into emerging markets and the euro," Dorrow said.
Speculation that rates will rise faster in Europe than in the United States has kept the two-year yield spread between German <DE2YT=TWEB> and U.S. government bonds <US2YT=RR> at around 80 basis points, its widest in two years.
A record high for a UK manufacturing PMI helped drive sterling to a 2-1/2-month high above $1.61 <GBP=D4> and boosted expectations for an interest rate hike my mid-year. (Additional reporting by Wanfeng Zhou in New York; Editing by Leslie Adler)