Earthquakes in Arnasco
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?
Medium-low seismicity: strong quakes are rare, but not impossible.
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 = 0.134 g (10% probability of exceedance in 50 years, rigid soil).
The “area” is Arnasco plus nearby towns.
The seismic history of Arnasco
The earthquakes that were actually felt in Arnasco over the centuries, with the intensity observed on site (Mercalli MCS scale).
- 2001III25 February 2001
Light: felt by few people, like a passing truck.
Mar Ligure earthquake (M4.4), epicentre 85 km away · observed at Arnasco (Chiesa)
- 2001III-IV6 February 2001
Moderate: felt by many indoors; glasses and dishes rattle.
Mar Ligure earthquake (M4.2), epicentre 43 km away · observed at Arnasco (Chiesa)
- 1970D31 December 1970
Strong: felt by everyone, many get scared; objects fall, first light damage to buildings.
Liguria occidentale earthquake (M4.6), epicentre 7 km away · observed at Arnasco (Chiesa)
- 1968VI18 April 1968
Strong: felt by everyone, many get scared; objects fall, first light damage to buildings.
Liguria occidentale earthquake (M4.9), epicentre 6 km away · observed at Arnasco (Chiesa)
- 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 23 km away · observed at Arnasco (Chiesa)
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 23 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?
Arnasco 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 Savona5 events · 30gLiguria region13 events · 30gFrequently asked questions
Were there earthquakes today in Arnasco?
No, no quakes were recorded today in the Arnasco area: the latest nearby dates back to 19 days ago.
Is Arnasco a seismic area?
Arnasco is classified in seismic zone 3 by the Civil Protection. Medium-low seismicity: strong quakes are rare, but not impossible.
What was the strongest earthquake near Arnasco?
In the last ~12 years of INGV data, the strongest within 30 km of Arnasco was magnitude 2.5, in 2022.
When was the last quake near Arnasco?
The last quake recorded within 30 km of Arnasco was 13 days ago.
Tip. Click a nearby town to explore its seismicity.
Data: INGV — National Institute of Geophysics and Volcanology (CC-BY 4.0)