Key Takeaways Henry Hub futures jumped 70% to $5.27/MMBtu, driven by a sharp turn in U.S. winter weather forecasts.Winter Storm Fern spiked heating demand and disrupted output, tightening the gas supply-demand balance.EXE, CRK, and AR posted gains as gas prices rose, supported by strong exposure to key shale and LNG markets.U.S. natural gas prices posted one of the most dramatic weekly surges in decades as winter risks abruptly returned to the forefront. A sudden shift in weather forecasts forced traders to ...