Natural gas futures advanced as forecasts for unusually hot weather signaled increased demand for the power-plant fuel, limiting supply gains. Mild weather in the Northeast, mid-Atlantic and Midwest this week will give way to above-normal temperatures Aug. 15 through Aug. 24, said MDA Weather Services. Manhattan’s high Tuesday may be 80 degrees Fahrenheit (27 Celsius), 3 below normal, before jumping eight days later to 90, AccuWeather Inc. said on its website. A government report last week showed the smallest gain in gas storage levels in almost four months after a surge of heat in the biggest gas-consuming regions of the U.S. More hot weather ahead is limiting concerns about ending the stockpiling season with a burgeoning surplus. “The forecasts are back for more above-normal temperatures in mostly gas-consuming regions and the market is reacting accordingly,” said Tom Saal, senior vice president of energy trading at FCStone Latin America LLC […]