US natural gas futures climbed in midday trading Thursday after government data showed a smaller-than-expected storage build.
The front-month Henry Hub contract and the continuous contract both rose by 4.29% to $3.352 per million British thermal units.
The rally followed data from the US Energy Information Administration showing working gas in underground storage increased by 95 billion cubic feet for the week ending May 29. That came in below analyst expectations for a 99-105 Bcf build.
Total inventories now stand at 2,578 Bcf, 3 Bcf below year-ago levels but 138 Bcf above the five-year average of 2,440 Bcf, and remain within the historical range.
Pinebrook Energy Advisors noted this is the first time since February that stocks have dipped below year-ago levels and the surplus to the five-year average narrowed modestly following the smaller build.
Prices were already trending higher ahead of the storage release, supported by hotter weather forecasts that are expected to lift cooling demand. Forecast models point to widespread 90-degree Fahrenheit-plus temperatures across major Northeast population centers.
Tradition Energy analyst Gary Cunningham said the heat could "firm up the fundamentals for the remainder of summer" and potentially test new Champlain Hudson Power Express transmission line into New York City as cooling demand there is expected to surge.
NatGasWeather.com said it expects to upgrade its demand outlook to "Moderate" from "Low" on Friday as the heat spreads across much of the US, including triple-digit readings in parts of the Southwest.
On the export side, LNG feedgas flows remain under pressure from scheduled maintenance. Barchart, citing data from BNEF, said US export feedgas flows were running near 17 Bcf/d on Wednesday, down roughly 3 Bcf/d from typical capacity utilization above 20 Bcf/d.
In global LNG markets, spot prices were up. EnergyNow.com, citing LSEG data, said prices up rose roughly 75% from February levels, to $18.20/MMBtu.
Earlier spikes reached $25.30/MMBtu in March following disruptions tied to an attack on QatarEnergy's Ras Laffan LNG facility. However, prices remained far below the record spike to $70.50/MMBtu seen in 2022 after Russia's invasion of Ukraine triggered a global supply shock, it said.