# Campi Flegrei volcanic unrest

> Live situation record from CLSTR: https://clstr.news/situations/campi-flegrei-volcanic-unrest
> Updated: 2026-10-26T11:37:29.000Z. Sources: 7. Developments: 2.

Scientific research has identified the mechanism driving unrest in the Campi Flegrei caldera, linking an exponential increase in carbon dioxide emissions from the Solfatara di Pozzuoli area since 2005 to ground uplift and seismic activity. A study suggests that the ascent of magmatic fluids at depths of 3 to 4 kilometers is pressurizing the hydrothermal system.

Recent activity includes a seismic swarm, highlighted by a magnitude 2.3 earthquake on October 26, 2026, centered in the Solfatara zone near Pozzuoli. While ground uplift continues, the rate of uplift has been progressively reducing. The National Institute of Geophysics and Volcanology (INGV) maintains a yellow volcanic alert level, indicating a state of moderate imbalance.

## Timeline

### 2026-10-26: Campi Flegrei experiences seismic swarm in Italy

A seismic swarm has hit the Campi Flegrei area in Italy, including a magnitude 2.3 earthquake near Pozzuoli. The volcanic alert level remains at yellow as monitoring continues.

7 sources. https://clstr.news/cluster/campi-flegrei-experiences-seismic-swarm-in-italy

### 2026-10-08: Campi Flegrei study links CO2 emissions to volcanic unrest

A new study reveals that rising CO2 emissions and magmatic fluid ascent at Campi Flegrei are driving ground uplift and seismic activity in the Italian volcanic region.

2 sources. https://clstr.news/cluster/campi-flegrei-study-links-co2-emissions-to-volcanic-unrest

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Cite as: Campi Flegrei volcanic unrest. CLSTR, https://clstr.news/situations/campi-flegrei-volcanic-unrest