EIA Natural Gas Report: As of the week ending September 19, total U.S. natural gas inventories were 350.8 billion cubic feet, an increase of 75 billion cubic feet from the previous week and 22 billion cubic feet from the same period last year, a year-on-year increase of 0.6%. At the same time, it was 20.3 billion cubic feet higher than the five-year average, an increase of 6.1%.