Why Do Lights Sometimes Appear in the Sky During An Earthquake? [1]

or centuries, eyewitnesses have occasionally reported seeing an inexplicable phenomenon minutes before, during or after an earthquake: strange bright lights in the sky.

Just after an 1888 quake that hit New Zealand, for instance, there were reports of [3] “luminous appearances” and "an extraordinary glow" visible for several hours. They were spotted in 1930, during an earthquake in Idu, Japan, visible up to 70 miles away [4] from the epicenter. Among the dozens of earthquakes that reportedly produced strange lights, their qualities varied widely: People reported seeing white flares, or floating orbs, or rainbow-colored flickering flames. The lights sometimes appeared for just a few seconds, but other times they hovered in the sky for minutes or hours at a time

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