US natural gas futures surged Monday morning as weather models continued to show a significant cold blast set to sweep across the Lower 48 in the coming days. The arctic air mass is expected to linger for weeks in the eastern half of the US, with increasing chances of wintery precipitation in some parts of the US. Traders appear to be responding to updated heating degree day forecasts, signaling a massive spike in heating demand over the next few weeks. In early Monday trading, NatGas futures for February delivery surged as much as 12.3% to $3.80…
