03/19/2026

Samuel Clifford

A powerful magnitude 6.1 earthquake struck the Coral Sea about 80 km (50 miles) from Vanuatu on March 20, 2026, at 02:30 GMT. This is the second earthquake higher than 6.0 in magnitude of the day. The exact depth could not be determined, but seismologists believe it was shallow (around 10 km), which explains why the shaking was strongly felt by people near the epicenter. Vanuatu is home to a population of roughly 300,000 people spread across more than 80 islands, many of whom live in areas highly vulnerable to seismic activity. The region experiences frequent earthquakes because it sits above the New Hebrides Trench, where the Australian Plate subducts beneath the Pacific Plate, creating one of the most active convergent boundaries in the world. This tectonic setting produces shallow, intermediate, and deep earthquakes, along with significant volcanic activity. Because shallow quakes transmit energy more directly to the surface, residents in nearby islands felt this event more intensely than they would a deeper quake of the same magnitude, consistent with reports from the area.