If this is true, it's highly interesting.
However there's no easy to to ascertain if the missing seismic data upon which the article is based was falsified. It is a bit suspicious that only one station picked it up and went offline prior to the blast.
https://www.jewishpress.com/news/middle-east/lebanon/report-beirut-massive-explosion-was-preceded-by-6-explosions-at-11-sec-intervals/2020/08/13/
Report: Beirut Massive Explosion Was Preceded by 6 Explosions at 11 Sec. Intervals
By David Israel - August 13, 20200
According to Israeli analyst, journalist, entrepreneur, and cyber expert Amir Rapaport, the massive explosion in Beirut on August 4 was preceded by six exceptional events, five of which took place at exactly the same time intervals. Rapaport reported Thursday morning in Israel Defense (לפיצוץ הענק בביירות קדמו שישה פיצוצים בהפרשי זמן זהים) that unequivocal seismological data point to the unusual events, which could be explained by an act of sabotage or the malfunction of military weapons.
(L-R) 5 explosions at precise intervals, followed by a bigger one, and then the massive explosion, Aug. 4, 2020 / Screenshot
These amazing findings were discovered and analyzed by geophysics experts in collaboration with the Israeli Tamar engineering group, and were also passed on to the higher political and security echelons.
The Tamar Group, founded by former Israeli Corps of Engineers officer Boaz Hayun, has been involved in the field of sabotage and controlled explosions in Israel for decades, as well as working with airports around the world to detect explosives. Among other things, the group performs special work on explosives, including explosions in buildings and complex experiments. It includes the National Fireworks Laboratory, which is responsible on behalf of the Israeli Standards Institute for the licensing of all fireworks, which come mainly from China,Post too long. Click here to view the full text.