US natural gas futures fell sharply Thursday after government data showed a larger-than-expected increase in underground storage, although prices partially recovered by midday.
The front-month Henry Hub contract and continuous contract were both down 2.57% at $2.732 per million British thermal units.
The US Energy Information Administration said inventories rose by 36 billion cubic feet in the week ended Aug. 7, exceeding analysts' expectations for a 31 Bcf build.
Total natural gas in underground storage stood at 3,153 Bcf, the EIA said, 25 Bcf below year-earlier levels and 198 Bcf above the five-year average of 2,955 Bcf.
The larger-than-expected build pushed prices down to $2.712/MMBtu before quickly recovering to around $2.735/MMBtu.
In other supply news, Trading Economics said US natural gas production is averaging a record 111.2 Bcf per day so far in August, up from 110.7 Bcf/d in June.
Gelber & Associates put Thursday's production at 111.6 Bcf/d and Canadian imports at 5.7 Bcf/d, keeping supply more than sufficient against power-sector demand of 48.9 Bcf/d and LNG feedgas demand of 18.2 Bcf/d.
Near-term heat should keep power demand firm, while LNG feedgas demand is forecast to rise toward 19.9-20.3 Bcf/d over the next two weeks as export facilities ramp up, Gelber & Associates said.
Those demand supports could prevent the market from loosening sharply, but they now have to contend with a larger-than-expected storage build and forecasts calling for temperatures to ease closer to normal later this month, Gelber & Associates said.
"Until the market strings together cleaner evidence of tightening, rallies are likely to struggle under the combination of heavy production and a nearly 200 Bcf inventory surplus," Gelber & Associates said in a Thursday note.