Lightning impacted the end of the second round at TPC San Antonio with the horn blowing on the Valero Texas Open shortly after 5:45 p.m. local time. Play was set to resume after a 45-minute delay.
Robert MacIntyre sits in the clubhouse with a comfortable, four-stroke lead on the field.
Round 3 start times have already been moved up on Saturday, with the PGA Tour wanting play to be completed before potential storms arrive at 4 p.m. locally.
Eight players sit on the projected cut at 2 under. One of those players is Jordan Spieth who is in the clubhouse as well after a pair of 71s.
First round leader Mark Hubbard is also at 2 under after shooting 5-over 77.