Earthquakes in Arenzano
Seismic activity in the surroundings
30 km radiusINGV catalogue epicentres of the last ~12 years, within the given radius from the town centre.
How seismic is this area?
The quietest class: the probability of strong earthquakes is very low.
Official Civil Protection classification (upd. 2025), used for building codes.
Hazard describes the long-term expected shaking: it is not a forecast. Technical value: ag = 0.056 g (10% probability of exceedance in 50 years, rigid soil).
The “area” is Arenzano plus nearby towns.
The seismic history of Arenzano
The earthquakes that were actually felt in Arenzano over the centuries, with the intensity observed on site (Mercalli MCS scale).
- 2005II18 April 2005
Very light: felt only by a few people at rest, on upper floors.
Valle del Trebbia earthquake (M4.0), epicentre 63 km away
- 2001III-IV6 February 2001
Moderate: felt by many indoors; glasses and dishes rattle.
Mar Ligure earthquake (M4.2), epicentre 39 km away
- 1993IV17 July 1993
Moderate: felt by many indoors; glasses and dishes rattle.
Liguria occidentale earthquake (M4.3), epicentre 42 km away
- 1910NF23 January 1910
Imperceptible: only instruments record it.
Piacentino earthquake (M4.4), epicentre 92 km away
- 1901III-IV23 January 1901
Moderate: felt by many indoors; glasses and dishes rattle.
Oltrepò Pavese earthquake (M4.2), epicentre 73 km away
- 1897V6 July 1897
Rather strong: felt by almost everyone; hanging objects swing.
Mar Ligure earthquake (M4.2), epicentre 2 km away
- 1887VI-VII23 February 1887
Very strong: hard to stand; chimneys and roof tiles fall, serious damage to weaker buildings.
Liguria occidentale earthquake (M6.3), epicentre 80 km away
Source: Italian Macroseismic Database DBMI15 (INGV, CC BY 4.0).
The great earthquakes in this area's history
Almost a thousand years of catalogues: the strongest documented events within ~50 km.
Source: Parametric Catalogue of Italian Earthquakes CPTI15 (INGV, CC BY 4.0).
The closest seismic structure
The town lies about 24 km from Imperia Promontory, one of the seismic structures mapped by INGV geologists.
Faults are mapped to build better and understand the territory: knowing them says nothing about when an earthquake will occur, which remains unpredictable. Source: DISS 3.3 (INGV, CC BY 4.0).
Area over time
Earthquake map
60 eventsEarthquakes in the area
Nearby towns
How does it compare with the surroundings?
Arenzano records more quakes than the average of its province.
Each quake is attributed to the town closest to its epicentre: the numbers describe the area, not the municipal territory alone.
Context
Province of Genova2 events · 30gLiguria region13 events · 30gFrequently asked questions
Were there earthquakes today in Arenzano?
No, no quakes were recorded today in the Arenzano area: the latest nearby dates back to 11 days ago.
Is Arenzano a seismic area?
Arenzano is classified in seismic zone 4 by the Civil Protection. The quietest class: the probability of strong earthquakes is very low.
What was the strongest earthquake near Arenzano?
In the last ~12 years of INGV data, the strongest within 30 km of Arenzano was magnitude 3.1, in 2015.
When was the last quake near Arenzano?
The last quake recorded within 30 km of Arenzano was 11 days ago.
Tip. Click a nearby town to explore its seismicity.
Data: INGV — National Institute of Geophysics and Volcanology (CC-BY 4.0)