A glimpse of mid-November cold in updated forecasts, offering a potential momentum shift for a natural gas futures market weighed down by bearish weather sentiment, sparked a sharp rally in early trading Monday. The December Nymex contract was up 61.0 cents to $6.294/MMBtu at around 8:55 a.m. ET.

NGI Morning Natural Gas Price & Markets Coverage

The latest forecast from Maxar’s Weather Desk early Monday was showing colder trends day/day for the eastern half of the Lower 48 in the 11- to 15-day period (Nov. 10-14). Both the American and European modeling had added numerous heating degree days to their respective projections since Sunday, Maxar said.

The forecaster said a pattern shift during the 11- to 15-day period would “allow for a colder air flow from the Northwest to the North-Central, while keeping the Southeast on the...