A strong and deep earthquake registered by the USGS as M6.8 hit Tarauaca, in the state of Acre, Brazil at 19:25 UTC on Jan 5. The agency is reporting a depth of 575.3 km (357 miles).
According to the USGS, the epicenter was located 89.1 km (55.3 miles) W of Tarauaca (population 16,526) and 134.3 km (83.5 miles) W of Feijo (population 12 951), Brazil.
There are approximately 47,000 people living within 100 km (62 miles).
It is estimated some 6,503,000 people felt weak shaking.
The USGS issued a green alert for shaking-related fatalities and economic losses, meaning a low likelihood of casualties and damage.
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, and the increase in Galactic Cosmic Rays penetrating silica-rich magma.
Check out these link for more info:
Grand Solar Minimum