In natural gas markets, analysts refer to the storage injection season as running from April 1 through October 31 of each year, but these dates are not strict cutoff points. In each of the past 11 years, going back to the first full year of EIA's weekly gas storage surveys, there have been net injections during one or more weeks in November. In 6 of those years, there have been multiple weeks of net injections. There have also been multiple weeks within the injection season when the weekly change resulted in a net withdrawal.