1. Balleny Islands Region

M 5.5 • 12:30:26 UTC

A magnitude 5.5 earthquake struck near Balleny Islands Region, on April 21, 2026, at 12:30:26 UTC. The quake originated at a depth of 10.0 km, according to seismic data.

At the time of the event, local weather conditions were not available.

Technical details of the earthquake were confirmed by EMSC and the USGS. Data may be subject to revision in the hours and days following the event.

2. Off The Coast Of Sanriku

M 5.4 • 18:44:00 UTC

A magnitude 5.4 earthquake struck near Off The Coast Of Sanriku, on April 21, 2026, at 18:44:00 UTC. The quake originated at a depth of 10.0 km, according to seismic data.

At the time of the event, local weather conditions were not available.

Technical details of the earthquake were confirmed by EMSC and the USGS. Data may be subject to revision in the hours and days following the event.

3. Off East Coast Of Honshu, Japan

M 5.4 • 20:44:12 UTC

A magnitude 5.4 earthquake struck near Off East Coast Of Honshu, Japan, on April 21, 2026, at 20:44:12 UTC. The quake originated at a depth of 21.0 km, according to seismic data.

At the time of the event, local weather conditions were not available.

Technical details of the earthquake were confirmed by EMSC and the USGS. Data may be subject to revision in the hours and days following the event.

4. 12 Km Ssw Of Santiago Quiavicuzas, Mexico

M 5.0 • 14:52:17 UTC

A magnitude 5.0 earthquake struck near 12 Km Ssw Of Santiago Quiavicuzas, Mexico, on April 21, 2026, at 14:52:17 UTC. The quake originated at a depth of 81.3 km, according to seismic data.

At the time of the event, local weather conditions were not available.

The epicenter was located in Mexico, a Americas country covering approximately 1,964,375 square kilometers and home to more than 130.6 million people. The capital city is Mexico City.

Technical details of the earthquake were confirmed by EMSC and the USGS. Data may be subject to revision in the hours and days following the event.

5. Southeast Of Loyalty Islands

M 5.0 • 13:03:15 UTC

A magnitude 5.0 earthquake struck near Southeast Of Loyalty Islands, on April 21, 2026, at 13:03:15 UTC. The quake originated at a depth of 10.0 km, according to seismic data.

At the time of the event, local weather conditions were not available.

Technical details of the earthquake were confirmed by EMSC and the USGS. Data may be subject to revision in the hours and days following the event.

Our editorial team carefully monitors seismic data to provide in-depth analysis. Explore our real-time interactive Live Map for more details.