Seismic activity on July 18: Earthquake close to Puerto Madero, Mexico reported – magnitude 5.3

Published Jul 18, 2026

TAPACHULA, Chis. — A 5.3 magnitude quake occurred near Puerto Madero on Saturday around midnight, according to the U.S. Geological Survey.

A tremor jolted the area at 06:51 UTC (00:51 local time). The earthquake’s epicenter was roughly 87 km west-southwest of Puerto Madero and occurred at a depth of 35 km.

Did you feel it?

If you noticed the quake, you can share your observations using the USGS Felt Report form.

Tremors last week

During the past week, there have been 31 earthquakes of magnitude 2.5 or greater centered nearby, two of them larger than magnitude 5.5. The strongest, a 7.3 magnitude quake, was registered in the same region on Jul. 17.

Source: The U.S. Geological Survey