* Negative manufacturing data weighs on market
* Market waiting for next signal on U.S. economy
* Coming up: May U.S. non-farm payrolls; 1230 GMT
By Seng Li Peng
SINGAPORE, June 3 (Reuters) - Brent and U.S. crude were flat on Friday as the dollar steadied against a basket of currencies and investors waited to see if U.S. non-farm payrolls data would add to evidence of a faltering global economy.
The market shrugged off news that OPEC is considering raising output by as much as 1.5 million barrels per day (bpd), ahead of the group's meeting in Vienna on June 8. One delegate said a 1 million-bpd hike would be the likely outcome. [ID:nLDE75114K]
But also weighing on sentiment, U.S. crude stockpiles rose 2.88 million barrels to 373.8 million barrels in the week to May 27, the U.S. Energy Information Administration said on Thursday, against expectations of a fall.
Brent oil gained 7 cents to $115.61 a barrel at 0316 GMT, heading for a weekly gain of nearly 2.7 percent, supported by intensified chaos in Yemen and the absence of Libyan light sweet crude.
"The weakness in data and (higher) inventories should have been a night off for oil, but oil prices went up this morning possibly due to the weakness in the U.S. dollar," said Ben Le Brun, a Sydney-based markets analyst at CMC Markets.
The euro hit a one-month high against the dollar on Friday, with investors fretting about a Moody's warning on U.S. debt levels and disappointing economic data this week.
"The economic data throughout the world is negative and that is going to put a bit of pressure on oil," Le Brun added.
U.S. oil rose 19 cents to $100.61 a barrel, on track for a weekly gain of about 1.3 percent.
"There have to be question marks on what sort of demand we are going to see in crude. Non-farm payrolls are going to be vital tonight as they will have a short-term, big impact on oil," Le Brun said.
U.S. non-farm payrolls data for May is forecast to show employers likely added 150,000 jobs, according to a Reuters survey, after increasing payrolls by 244,000 in April. [ID:nN01187478]
Data on Wednesday already flagged weaker factory growth around the world last month, and this has intensified concerns that the world's main economic engines are cooling fast as richer countries curtail orders. [ID:nLDE7500VU]
There are also worries about the end of the Fed's second round of quantitative easing later this month. Known as QE2, the $600 billion asset purchase program was launched to stimulate the economy. Investors fear its removal could hinder recovery. [ID:nN02256664]
Market attention is also turning to the hurricane season in the Gulf of Mexico, with the National Hurricane Center on Thursday warning a low pressure system about two hundred miles north-northwest of the Yucatan peninsula continued to have a 10 percent chance of strengthening into a depression over the next 48 hours. [ID:nL3E7H239V]
OPEC
OPEC's output remains far below that of a year ago, with its exports in the period to June 18 expected to be 570,000 bpd down from a year ago mainly because of the loss of Libyan supplies, UK consultancy Oil Movements said in its latest weekly estimate on Thursday. [ID:nWLA1816]
Analysts say there is divergence within OPEC over the need for any output hike.
Ecuador's oil minister Wilson Pastor said on Thursday that OPEC countries may decide to increase output quotas when they meet next week if they see the global oil market as under-supplied. [ID:nN02257799]
(Editing by Ed Lane)