August 21st 2024.
The mystery behind the loud boom that shook parts of southern Perth has finally been solved. It all started when multiple people reported hearing a distinct sound around 11:30 am, which they described as a deep, intense bang. Some even reported feeling a shock wave or a deep rumbling that shook their homes.
One of the witnesses, Krystal Brown from Baldivis, shared her experience with 9News, saying that the sound was both loud and distant at the same time, making it a very strange and unsettling experience. Speculations about the source of the sound were rampant throughout the day until the cause was finally revealed. It turns out that the sound was a result of sonic booms caused by Republic of Singapore Air Force F-15 fighter jets training off the coast of Western Australia.
Aviation expert Geoff Thomas explained to 9News that when the fighter jets go supersonic, they break the sound barrier, creating a loud and sharp crack. However, experts say that this should only happen above water and not over land due to the potential danger it poses to residents. Despite this, the fighters were reportedly 30 nautical miles off the coast and traveling at twice the speed of sound.
The sound was heard as far as Mandurah and Fremantle, and even as far east as Wandering in the wheat belt. The perfect combination of weather conditions amplified the noise, making it audible from Garden Island in the west to Boddington in the south. Suburbs like East Fremantle, South Guilford, Jandakot, Hilbert, Spearwood, and Bull Creek also reported hearing the boom.
The Royal Australian Air Force is currently hosting a detachment of fighter aircraft from the Republic of Singapore Air Force at RAAF Base Pearce in Bullsbrook, WA. According to their online statement, in addition to the Pilatus PC-21 and Hawk-127 aircraft, there will also be F-15SG and F-16C/D/+ aircraft training at the base.
Geoscience Australia, the government agency responsible for monitoring earthquakes, confirmed that there was no seismic activity recorded during the time of the boom. 9News has reached out to the Defense Force for further information on the incident.
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