Due to high winds, two large pines fell on the Augusta National Course, causing play to be suspended for the second time.
It is not known if any spectators were injured.
Although it was not raining when the horn sounded, play was halted at 4:22 a.m. due to the risk of lightning and stormy weather.
Many fans stayed in their seats despite the announcement.
The initial suspension lasted 21 minutes before the players were allowed to continue.
Brooks Koepka has completed 36 holes and currently leads at 12 under.
This is a developing story that will be updated when more information becomes available.