By Amrith Ramkumar 

Commodities from oil to copper kept dropping Thursday, continuing a recent slide as traders expect the spreading coronavirus to cripple demand.

U.S. crude-oil futures slid 3.4% to $47.09 a barrel on the New York Mercantile Exchange, paring some of an earlier drop, but still recording the futures' lowest close since January 2019. Prices are now 29% below a peak hit early this year. Brent crude, the global gauge of oil prices, closed down 2.3% to $52.18 a barrel on the Intercontinental Exchange.

Industrial metals also dropped. Front-month copper futures trimmed nearly all of their Thursday loss, ending the day down less than 0.1% at $2.5715 a pound in New York. Aluminum, zinc, tin and nickel fell on the London Metal Exchange and extended recent declines.

Thursday's synchronous slide came with stocks around the world tumbling and extended a punishing stretch for commodities sensitive to the transportation and manufacturing sectors.

China is a key source of demand for the materials, so the early yea r slump in economic activity in the country as a result of the coronavirus has fueled projections for lukewarm consumption and excess supply.

More recently, the virus spreading to many other parts of the world has caused anxiety about a larger-than-expected drop in global travel. On Wednesday, a new case of coronavirus was confirmed in California that involved a person who reportedly didn't have a travel history or exposure to another person known to have the illness.

The rise of cases in countries from South Korea to Italy has also fanned fears that the ripple effects of the virus could result in supply gluts for a range of materials.

"The spread of the virus is spreading not only fear but oil-demand destruction and horror thinking about potential demand destruction to come," Phil Flynn, senior market analyst at the Price Futures Group, said in a note to clients.

Oil-market traders are looking ahead to a coming meeting of the Organization of the Petroleum Exporting Countries to see if the cartel deepens output cuts in an effort to stabilize the market. The move is expected, but some analysts question whether even deeper supply curbs will boost crude with demand expected to fall substantially.

Hedge funds and other speculative investors have cut net bets on higher U.S. crude prices, pushing them to a nearly four-month low during the week ended Feb. 18, Commodity Futures Trading Commission figures show. At the same time, speculators have ramped up net wagers on lower copper prices.

Data for the week ended Tuesday will be released on Friday, with some analysts noting that a reversal in speculative wagers has likely made the slide in commodities even more severe.

Elsewhere in commodities Thursday, natural-gas futures tumbled 4.6% to $1.752 a million British thermal units, closing at a nearly four-year low, with traders expecting mild winter temperatures and steady production to result in a glut of the heating fuel. The coronavirus has also dented demand for natural gas.

Front-month gold futures erased an earlier advance, ending the day down less than 0.1% at $1,640 a troy ounce. Investors have generally favored the safe-haven metal recently, pushing prices to a seven-year high on Monday, though those prices fell on Tuesday and Wednesday.

Write to Amrith Ramkumar at amrith.ramkumar@wsj.com

(END) Dow Jones Newswires

February 27, 2020 15:48 ET (20:48 GMT)