After multiple setbacks, liquefied natural gas (LNG) demand ramped up in a big way during the Oct. 15-21 period, tightening up supply/demand balances and boosting natural gas forward prices across the country, according to NGI’s Forward Look.

November prices jumped an average 26.0 cents for the period, with double-digit gains extending through the winter months (November-March). Prices for next summer (April-October) and the 2021-2022 winter each climbed an average 6.0 cents.

Markets across the Lower 48 closely tracked benchmark Henry Hub prices, which hobbled along early in the Oct. 15-21 period and then rallied Tuesday on word that LNG traffic soon would be able to resume from two major Gulf Coast facilities. Various obstructions were blocking deep draft traffic near the...