Natural-gas prices slipped Wednesday on concerns about ample supplies. Moderate weather has kept demand for the heating fuel subdued, allowing storage inventories to grow above average levels. Weather-driven demand is usually strong enough at this time of year that stockpiles shrink each week as producers draw natural gas out of storage. But this year, analysts expect that producers are still injecting more fuel into storage than consumers are withdrawing. Forecasts released Wednesday showed warmer weather in the next two weeks than previously expected, with East Coast cities seeing temperatures above 60 degrees, according to Commodity Weather Group LLC. Natural-gas futures for December delivery settled down 5.7 cents, or 2.5%, at $2.263 per million British thermal units on the New York Mercantile Exchange. “A very mild November has led many in the market to think that the rest of winter might be warmer-than-normal, thereby leading to even lower prices,” […]