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Light magnitude 4.3 earthquake 66 km south of Tonalá, Mexico

A magnitude 4.3 earthquake near Isla San José was reported only 26 minutes ago by Mexico's National Seismological Service (SSN), considered the main national agency that monitors seismic activity in Mexico. The earthquake occurred at an intermediate depth of 77 km beneath the epicenter around noon on Saturday 28 November 2020 at 12.37 pm local time. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.
A second report was later issued by the European-Mediterranean Seismological Centre (EMSC), which listed it as a magnitude 4.3 earthquake as well.
Based on the preliminary seismic data, the quake should not have caused any significant damage, but was probably felt by many people as light vibration in the area of the epicenter. Weak shaking might have been felt in Isla San José (pop. 100) located 31 km from the epicenter, La Conquista (pop. 500) 32 km away, El Manguito (pop. 800) 32 km away, El Fortín (pop. 400) 34 km away, and Manuel Ávila Camacho (Ponte Duro) (pop. 1,800) 35 km away.
Towns or cities near the epicenter where the quake might have been felt as very weak shaking include Tonalá (pop. 32,900) located 66 km from the epicenter, Mapastepec (pop. 17,900) 82 km away, and Arriaga (pop. 22,800) 86 km away.
VolcanoDiscovery will automatically update magnitude and depth if these change and follow up if other significant news about the quake become available. If you’re in the area, please send us your experience through our reporting mechanism, either online or via our mobile app. This will help us provide more first-hand updates to anyone around the globe who wants to know more about this quake.

Earthquake data:
Date & time: Sat, 28 Nov 18:37 UTC
Magnitude: 4.3
Depth: 77.0 km
Epicenter latitude / longitude: 15.5°N / 93.66°W
Primary data source: SSN