I was in the Gold’s Gym immediately to the west. It is housed in a former supermarket and the wind was so strong during the pouring rainstorm that both pairs of double doors (facing north and south) blew open. Didn’t hear anything like a “roaring train” so didn’t realize what had happened until someone inside told us the facility had blown down.
I went out back and there it was, a huge tent collapsed, the metal structure sticking out. I was about 50 yards from the perimeter.
Looks like it got smashed by a downburst.
I know where that is. I live right down the street. Scary!