EIA reported a build of 20 Bcf for the week ending 8/27/2021. This was smaller than the median estimate of 25 Bcf. Today's stat fell outside the expected range, which was 29 Bcf on the more bearish end, and 22 Bcf on the more bullish end.
Prices were up in the five minutes following the announcement, to $4.662, from $4.629 just before 9:30am.