On January 14, 2020, we had a wind storm that broke the top 30′ off the 140′ 40M Rohn 45 Tower. It had M2 4 element 40M beams at 60′ and 140′.
Oddly, the highest recorded wind gust was 54MPH.
The failure mode appears to be the guy grip on the top South guy.
The rest of the South guys have been secured to a pine tree for nearly 20 years
The Southwest guys are intact.