* U.S. braces for dire earnings season
* U.S. crude stocks expected to rise by 2.1 mln barrels
* Flow through Kirkuk-Ceyhan pipeline resumes
(Updates prices, adds details, changes dateline from LONDON)
By Edward McAllister
NEW YORK, April 7 (Reuters) - Oil fell below $50 a barrel on Tuesday, tracking U.S. stock market losses ahead of what is expected to be a miserable first-quarter earnings season.
U.S. stocks fell on Tuesday as earnings for S&P 500 companies were expected to fall by 36.7 percent, according to ThomsonReuters data. [
]U.S. aluminum company Alcoa Inc <AA.N> will kick off the results season after the Wall Street close Tuesday with an expected second consecutive quarterly loss, spelling out continued weakness in world energy demand. [
]U.S. light crude for May delivery <CLc1> fell $1.25 at $49.80 a barrel by 12:12 EDT (1612 GMT). London Brent crude <LCOc1> fell 66 cents to $51.58.
Crude oil prices have been closely tracking the fortunes of broader markets as investors look for clues as to when oil demand might rebound.
"I think the road to recovery is a long one, and while we await a recovery, global oil demand will be weak," Bache Commodities broker Christopher Bellew said.
U.S. chief executives' confidence in the economy hit a second consecutive all-time low in the first quarter, according to a Business Roundtable survey released on Tuesday. [
]European turned lower on Tuesday, falling for the third consecutive session as figures showed the euro zone shrank by more than previously thought in the fourth quarter. [
]The global recession has cut oil demand around the world, with consumption expected to be curbed for the first time since the early 1980s.
The resumption of oil flow through the Kirkuk-Ceyhan oil pipeline also pressured prices.
Oil flow through the pipeline, which carries more than a fifth of Iraqi crude to the Turkish Mediterranean coast, had resumed on Monday, a source at the Turkish pipeline operator told Reuters.
Strength in the dollar also weighed, as commodities prices in the U.S. currency become more expensive for overseas investors.
U.S. INVENTORIES
Little upside is expected from weekly U.S. inventories data due on Tuesday and Wednesday, with oil analysts predicting yet another increase in crude stocks because of high import levels and weak demand from domestic refiners. [
]A preliminary forecast of seven analysts called for a 2.1 million barrel rise in crude stocks, which are already running at a 16-year high, according to the U.S. Energy Information Administration (EIA).
Gasoline stocks could fall by 1 million barrels, and distillates by 0.4 million barrels, mainly due to lower refinery production. Demand may have dipped too, analysts added.
The American Petroleum Institute will release its report on Tuesday at 2030 GMT, while the EIA -- whose data is generally seen as more comprehensive -- releases its report at 1530 GMT on Wednesday.
Oil prices have gained roughly 40 percent since mid-February as equities markets rose and OPEC producers cut output, though oil's gains have been limited by continued weak global demand and rising inventory levels. (Reporting by Edward McAllister; Editing by Lisa Shumaker) (Additional reporting by Robert Gibbons and Gene Ramos in New York, David Sheppard in London, Maryelle Demongeot in Singapore)