A powerful earthquake registered by the USGS as M6.6 hit Vanuatu at 15:02 UTC on July 31. The agency is reporting a depth of 179.1 km (111.3 miles).
The epicenter was located 57 km (35 miles) E of Lakatoro, Vanuatu.
A strong M5.0 aftershock hit the region at 19:11 UTC.
Some 90,000 people reside within 100 km (62 miles) of the quakes.
No tsunami warnings have been issued.
The Vanuatu archipelago contains many active volcanoes including Ambae, Ambrym, Lopevi, and Yasur, the Stromboli counterpart of the Mediterranean.
Seismic and Volcanic activity has been correlated to changes in our sun.
The recent global uptick in earthquakes and volcanic eruptions is likely attributed to the drop-off in solar activity, coronal holes, a waning magnetosphere, and the influx of Cosmic Rays penetrating silica-rich magma.
Check out these link for more info:
Grand Solar Minimum + Pole Shift