Naples – A breath of fresh air, albeit cautious, comes from technical data on the bradyseism affecting the Phlegraean Fields. According to the latest weekly monitoring bulletin released by the Vesuvius Observatory (INGV), the rate of ground uplift in the Phlegraean Fields has significantly slowed.
Since mid-December 2025, in fact, the average value has settled at 15 millimeters per month, confirming a slowing trend compared to the peaks recorded last autumn.
The trend of the data
2025 was a year of strong upheavals for the caldera. After the intense earthquake swarm in February, the rate of uplift doubled, reaching 30 mm per month, before stabilizing in the spring. A new acceleration occurred starting on October 10th, with the ground pushing upward again at a rate of 25 mm per month.
The current figure of 15 mm therefore marks a return to a less turbulent phase, although the overall toll remains significant: the GNSS station in Rione Terra, the historic heart of Pozzuoli, estimates that the ground has risen by a full 23 centimeters in the last year.
Seismicity and monitoring
On the seismic front, the situation currently appears under control. During the week between January 19 and 25, 2026, INGV sensors detected 24 earthquakes. These were low-energy events, with a maximum magnitude of no more than 1.7.
Despite the slowdown in deformation dynamics, expert monitoring remains ongoing. The slowdown in velocity is a positive sign, but the scientific community urges caution: the Phlegraean Fields remains a complex and constantly evolving system, where the key word remains "surveillance."
Source EDITORIAL TEAM
Comments (1)
It's interesting to see how bradyseism data is changing over time. Even if there's a slowdown, we should always remain vigilant and constantly monitor for any changes. The situation can be complex.