Authorities had evacuated the nearly 4,000 inhabitants of the fishing town of Grindavik last month over fears of eruption.
Baba Vanga also warns of an impending global economic crisis and extreme weather events in 2024.
An Israeli-French research revealed new insights into the natural, destructive phenomenon of soil liquefaction during earthquakes.
A 4.2 magnitude earthquake struck the area early on Wednesday, the strongest jolt in 40 years to rattle the volcanic field, known as the Campi Flegrei.
The quake caused widespread destruction of lives, villages, and cultural sites, but everyone from ordinary citizens up to the king has been working to help those affected.
Dutch seismologist Frank Hoogerbeets predicted seismic activity in the Mediterranean region could occur between September 19 and 21, including a possible magnitude 7 earthquake.
This year's disasters have cost more than $57.9 billion and claimed at least 253 lives.
The 6.8 magnitude quake that struck the High Atlas Mountains late on Friday killed at least 2,901 people and injured 5,530 making it Morocco's deadliest earthquake since 1960.
For the last few days, the team has gone from village to village in the Atlas Mountains providing assistance and treatment to those in need.
Morocco has accepted offers of aid from Spain and Britain, which both sent search-and-rescue specialists with sniffer dogs, and from the United Arab Emirates and Qatar.