(Adds analyst comment, updates prices) BEIJING, Jan 17 (Reuters) - Shanghai aluminium prices extended declines into a second session on Wednesday as improving weather conditions smoothed the flow of ingots from China's remote northwestern Xinjiang region to the east of the country. Heavy snowfall in Xinjiang, a key aluminium smelting region, had disrupted transportation this month, leaving ingots stuck in transit. "Even so, the inventory on the market is still growing," said Xu Maili, director of non-ferrous metal reserarch at Everbright Futures in Shanghai. Shanghai aluminium prices are already down 3.9 percent year -to-date, with deliverable Shanghai Futures Exchange (ShFE) aluminium stocks at a record 773,941 tonnes, as of Jan. 12. "As the weather is okay now, transport will get better and people expect to see more ingot deliveries to warehouses," said CRU analyst Jackie Wang.
* SHANGHAI ALUMINIUM: The most-traded March contract on the ShFE was down 1.8 pct at 14,625 yuan ($2,275.34) a tonne, as of 0452 GMT. Earlier in the session, it touched its lowest since Dec. 20 at 14,560 yuan a tonne.
* LONDON ALUMINIUM: Aluminium on the London Metal Exchange (LME) slipped 0.1 percent to $2,188 per tonne, shedding the modest gains it posted since Tuesday's close.
* SHFE COPPER: The most-traded ShFE copper contract edged 1.4 percent down to 53,850 yuan a tonne, to its lowest close since Dec. 20, as traders locked in profits ahead of Lunar New Year.
* LONDON COPPER: Three-month copper on the London Metal Exchange gained 0.1 percent to $7,082 a tonne, partly recovering from the 1.8 percent fall in the previous session.
* POSITIONS: Futures brokerage Gelin Dahua cut its long position on the ShFE April copper contract by 35 percent on Tuesday, according to ShFE data, but remains the top position holder for the month with 7,803 lots.
* NICKEL: Shanghai nickel was down 1.9 percent at 97,280 yuan a tonne, poised for its fourth consecutive session of declines, tracking a more than 5 percent slide in London on Tuesday.
* INVENTORIES: Stocks of industrial metals in LME warehouses fell more than 40 percent last year and further declines are expected in 2018, which should in theory signal tighter supplies and fuel a blistering price rally.
* AUSTRALIA: Mining group South32 Ltd's second-quarter metallurgical coal output dropped 43 percent due to the suspension of operations at its Appin mine in Australia over safety concerns, the company said on Wednesday.
* RIO TINTO: Rio Tinto Plc on Tuesday said a U.S. regulator's lawsuit accusing the big Anglo-Australian mining company of fraud for overstating the value of Mozambique coal assets it had bought in 2011 should be dismissed.
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* Asian stocks stepped back from a record high on Wednesday as the region's resource shares were hit by falling oil and commodity prices while digital currencies tumbled on worries about tighter regulations.
DATA/EVENTS AHEAD (GMT)
1415 U.S. Industrial production Dec 1500 U.S. NAHB housing market index Jan 1500 U.S. Senate Banking Committee votes on nomination
of Jerome Powell to be chairman of the Federal Reserve
BASE METALS PRICES 0515 GMT Three month LME copper 7087 Most active ShFE copper 53850 Three month LME aluminium 2187 Most active ShFE aluminium 14625 Three month LME zinc 3396.5 Most active ShFE zinc 26105 Three month LME lead 2563 Most active ShFE lead 19140 Three month LME nickel 12500 Most active ShFE nickel 97280 Three month LME tin 20410 Most active ShFE tin 145010 LME/SHFE COPPER LMESHFCUc3 675.03 LME/SHFE ALUMINIUM LMESHFALc3 -1705.26 LME/SHFE ZINC LMESHFZNc3 274.57 LME/SHFE LEAD LMESHFPBc3 -702.6 LME/SHFE NICKEL LMESHFNIc3 2244.93
($1 = 6.4276 Chinese yuan)
(Reporting by Tom Daly, Editing by Joseph Radford and Sherry Jacob-Phillips)