Overview

• Mexico’s National Seismological Service logged six earthquakes early on October 8 across Chiapas, Oaxaca and Guerrero, led by a magnitude 5.0 event south of Ciudad Hidalgo.
• Civil protection authorities said there were no injuries or structural damage reported and ruled out the possibility of a tsunami for national coasts.
• The Mexican seismic alert system did not activate because the events did not meet its distance–magnitude criteria for citywide warnings.
• Recorded quakes in the sequence ranged roughly from magnitude 4.0 to 5.0 between about 02:52 and 05:58 local time, including multiple M4+ shocks near Ciudad Hidalgo and off Oaxaca.
• In global context, the USGS reported a magnitude 6.6 earthquake in Papua New Guinea and 31 earthquakes of at least magnitude 2.5 in North America in the past 24 hours, with a 3.2 near Pinnacles, California the strongest in the U.S.