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2022-09-19, M7.6, Mexico

On the 19th of September, 2022, at 18:05:08 UTC a magnitude M7.6 earthquake occurred in the Michoacan region of Mexico. The earthquake struck approximately 110 km SE of the city of Colima (pop: 150,000), with the red circle indicating the epicentre on the map below. USGS reports the earthquake originated at a depth of 15 kilometers. At the time of writing the earthquake caused at least 2 deaths.

Tectonically, southern Mexico lies along the boundary between the North American plate and Cocos plate to the south. The subduction of the Cocos plate beneath the North American plate results in many large earthquakes in this region. Coincidentally, two other major earthquakes occurred in this region on the same date: the devastating M8.0 Mexico City earthquake on Sept 19th 1985 in which over 5,000 people died, and M7.1 Mexico City earthquake on Sept 19th 2017 which caused 360 fatalities.

The event was recorded by seismic stations worldwide, including stations in the Irish National Seismic Network (INSN), see figure below.

Past Seismograms
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Live Seismograms
All stations here
Filtered versions here
DSB - Dublin
VAL - Kerry

Past Spectrograms
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Live Spectrograms
All stations here
ITIP - N. Tipperary
IMAY - Mayo