EIA Natural Gas Report: As of the week ending September 12, total U.S. natural gas inventories were 343.3 billion cubic feet, an increase of 90 billion cubic feet from the previous week and a decrease of 4 billion cubic feet from the same period last year, a year-on-year decrease of 0.1%. At the same time, it was 20.4 billion cubic feet higher than the five-year average, an increase of 6.3%.