A tower housing KNSJ (FM) 89.1 MHz and other communications antennas toppled at approximately 10:00 AM on Wednesday, February 18, 2026, atop Monument Peak. The American Tower-managed site, at an elevation of 6,255 feet, is at the steep transition between the forested mountaintop and the Anzo-Borrego Desert at near sea level. Engineers familiar with the event say the tower and antennas were laden with ice, and that winds were reported at 80 miles per hour or higher. The FAA-registered tower, originally constructed in 1972, was 93 feet tall and heavily laden with microwave dishes and cellular panel antennas.
Now you see it… This UCSD HPWREN webcam capture was taken on February 8 and includes the tower to the north, appearing to the right. 
…Now you don’t. This HPWREN screenshot was captured on February 23. 
American Tower Corp. building wrapped in collapsed tower steel. 
Tower pier with severed leg. 
Lifted pier.
If you watch the site HPWREN webcam time-lapse video (play the left-most video labeled “09-12”), you can see the tower “disappear” just before 10:00 AM. KNSJ’s antenna is the slanted Shively FM log-periodic array pictured.
KNSJ has been off the air due to weather damage before. The station, owned by Activist San Diego, is licensed for 330 watts ERP directed southwest toward San Diego, with a slant polarization.