1531 ET [Dow Jones]--U.S. natural-gas futures return some of the previous session's gains that were due to the outage on a pipeline in West Virginia operated by a unit of TC Energy. While no date for a resumption of service had been given by Friday morning, the fact the problem was confined to the regulator station "reduced concern that the outage will require a prolonged pipeline-integrity response," Gelber & Associates said in a note. LNG feedgas flows continue to support market balances, "but cooling demand is declining as the market moves deeper into the shoulder season," the firm adds. Nymex natural gas settles down 3.1% at $3.196/mmBtu.