EIA reported a build of 13 Bcf for the week ending 7/30/2021. This was smaller than the median estimate of 18 Bcf. Today's stat fell outside the expected range, which was 22 Bcf on the more bearish end, and 14 Bcf on the more bullish end.
Prices were down in the five minutes following the announcement, to $4.155, from $4.181 just before 9:30am.