UM-Bot Posted March 28, 2019 #1 Share Posted March 28, 2019 Loud explosions have been occurring in the middle of the night in northeastern Sacramento for months. https://www.unexplained-mysteries.com/news/326553/mystery-booms-plague-fair-oaks-residents Link to comment Share on other sites More sharing options...
Susanc241 Posted March 28, 2019 #2 Share Posted March 28, 2019 A bright light does seem to be seen briefly just before the noise occurs on some of the clips, suggesting something like heavy duty fireworks. Can the time lapse between glow and sound be used to work out distance away? My mathematical skills are abysmal! 1 Link to comment Share on other sites More sharing options...
RoofGardener Posted March 28, 2019 #3 Share Posted March 28, 2019 Just now, Susanc241 said: A bright light does seem to be seen briefly just before the noise occurs on some of the clips, suggesting something like heavy duty fireworks. Can the time lapse between glow and sound be used to work out distance away? My mathematical skills are abysmal! Yes it can Susanc241. Very roughly, sound travels at about 330m/second. So if the boom is three seconds behind the flash, then it is about a kilometre away ! 4 Link to comment Share on other sites More sharing options...
Susanc241 Posted March 28, 2019 #4 Share Posted March 28, 2019 That should narrow down any search area. 1 Link to comment Share on other sites More sharing options...
+and-then Posted March 28, 2019 #5 Share Posted March 28, 2019 I recall a technology that was deployed in one of our larger cities (don't recall which one) that used microphones in specific locations that allowed a kind of triangulation to locate where gunshots were emanating from. Maybe they could try something like that. I just hope it isn't some nutjob or group of them practicing for "an event" they're planning. The kind of chaos that could be caused to our power grid with just a few, strategically employed mortars and rifle fire is beyond the imagination. Our grid is so fragile in that respect that when it does go down to an attack, there are going to be individuals who should be imprisoned for life. They KNOW it's going to happen at some point and are too gutless about possibly losing their jobs and pensions to DO anything about it. Link to comment Share on other sites More sharing options...
Jon the frog Posted March 28, 2019 #6 Share Posted March 28, 2019 (edited) Was using pyrotechnic to scare gulls to stop them nesting in an area. Sound and look more or less like that. It was on a industrial site in the middle of Quebec city, the sound was rattling on the buildings everywhere. https://www.margosupplies.com/canada/scare-cartridges-launchers Edited March 28, 2019 by Jon the frog Link to comment Share on other sites More sharing options...
MissJatti Posted March 29, 2019 #7 Share Posted March 29, 2019 Admiral Boom is still at it. Link to comment Share on other sites More sharing options...
NCC1701 Posted March 30, 2019 #8 Share Posted March 30, 2019 On 3/28/2019 at 7:43 PM, RoofGardener said: Yes it can Susanc241. Very roughly, sound travels at about 330m/second. So if the boom is three seconds behind the flash, then it is about a kilometre away ! You can then draw a circle on the map with the distance as the radius. When three people do this the intersection of the circles is the rough location of the explosions. Link to comment Share on other sites More sharing options...
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