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This explanation is posted whenever earthquake lights are reported, but it's wrong. I have a few reasons: First. So the explanation goes, during the earthquake power substation transformers and fuses blow, causing these lights. Problem is, the grid doesn't sustain that level of damage during these earthquakes. Yes, the power usually goes out and there is grid damage, but the amount of damage is nowhere near 'every substation blowing', even in the most severe quakes. So the number of lights and number of grid faults do not equal. Second. Earthquake lights present in the sky, not on the ground beneath them. If substations were blowing and creating light, they would light objects in their immediate vicinity (e.g. buildings) more than they would illuminate clouds. But that doesn't happen, and in fact the lights appear within the cloud layers themselves rather than appearing as a projection onto them, as they would if the light source was at ground level. Third. These lights have been witnessed out to sea and over offshore islands, where there is no power grid. That last point is the most compelling for me, because I personally witnessed earthquake lights, less than a year ago, offshore, during the November 2016 7.8 Kaikoura earthquake. During that earthquake, I had this (night time) view: https://imgur.com/a/Nt2wD |
The look is very similar to the videos of the ones in Mexico, and very different to the long-lasting beam of light from the ground that seems to come from generator explosions.