Gas traders betting that ample supply will limit price gains risk a repeat of last winter’s rally as forecasts for another frigid season raise the specter of supply constraints. AccuWeather Inc. and Commodity Weather Group LLC predict below-normal temperatures for much of the U.S. this winter. The price difference between gas for delivery in October and January is the narrowest for this time of year since 2000, a sign that the market views stockpiles as adequate to meet peak heating demand. Goldman Sachs Group Inc. cut its forecast for average gas prices in the fourth quarter of this year and throughout 2015 to $4 per million British thermal units from $4.25, citing a mild summer and rising production. Last winter, a polar vortex left gas supply at an 11-year low and sent futures to a five-year high. Gas inventories will enter the heating season at the lowest level for […]