The National Seismological Service (SSN) of Mexico reported this morning of September 22, 2022 of an earthquake of magnitude 6.9, with an epicenter in Coalcoman, Michocán, the same place where the earthquake of magnitude 7.7 originated last Monday, September 19.
During the night, thousands of residents of the Mexico City (CDMX) they saw a phenomenon in the sky: lights like flashes.
“Look, the transformers,” says Gerardo, a neighbor. But are they transformers?
This phenomenon was noticeable for the first time during the earthquake of September 7, 2017, days before the devastating one of September 19 of that year.
Science has an explanation for this phenomenon.
According to researchers at Rutgers University in the United States, Flashes of light occur because landslides near Earth’s geological faults generate an electrical charge.
They are known as “earthquake lights” and have been documented since the 1600s, says a report by the Seismological Association of the United States, as documented by the BBC.
Two days before the 1906 San Francisco earthquake, for example, a couple saw streaks of light along the ground. And in the case of Quebec, Canada, in 1988, a brilliant globe of pink and purple light was seen 11 days before the devastating tremor.
Lights in the sky
This Thursday, this is how the residents of CDMX captured the earthquake and the lights in the sky.