Earthquakes in Cosio d'Arroscia
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 = 0.140 g (10% probability of exceedance in 50 years, rigid soil).
The “area” is Cosio d'Arroscia plus nearby towns.
The seismic history of Cosio d'Arroscia
The earthquakes that were actually felt in Cosio d'Arroscia over the centuries, with the intensity observed on site (Mercalli MCS scale).
- 1993III17 July 1993
Light: felt by few people, like a passing truck.
Liguria occidentale earthquake (M4.3), epicentre 38 km away · observed at Cosio di Arroscia
- 1989III26 December 1989
Light: felt by few people, like a passing truck.
Mar Ligure earthquake (M4.5), epicentre 69 km away · observed at Cosio di Arroscia
- 1906IV11 August 1906
Moderate: felt by many indoors; glasses and dishes rattle.
Liguria occidentale earthquake (M4.4), epicentre 37 km away · observed at Cosio di Arroscia
- 1887VII-VIII23 February 1887
Ruinous: partial collapses in ordinary buildings, widespread heavy damage.
Liguria occidentale earthquake (M6.3), epicentre 29 km away · observed at Cosio di Arroscia
- 1818V23 February 1818
Rather strong: felt by almost everyone; hanging objects swing.
Liguria occidentale earthquake (M5.3), epicentre 29 km away · observed at Cosio di Arroscia
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 37 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?
Cosio d'Arroscia 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 Imperia5 events · 30gLiguria region13 events · 30gFrequently asked questions
Were there earthquakes today in Cosio d'Arroscia?
No, no quakes were recorded today in the Cosio d'Arroscia area: the latest nearby dates back to 27 days ago.
Is Cosio d'Arroscia a seismic area?
Cosio d'Arroscia 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 Cosio d'Arroscia?
In the last ~12 years of INGV data, the strongest within 30 km of Cosio d'Arroscia was magnitude 3.3, in 2016.
When was the last quake near Cosio d'Arroscia?
The last quake recorded within 30 km of Cosio d'Arroscia was 6 days ago.
Tip. Click a nearby town to explore its seismicity.
Data: INGV — National Institute of Geophysics and Volcanology (CC-BY 4.0)