Earthquakes today in Castelletto d'Erro
Today, within 30 km: 1 earthquake recorded, magnitude 0.4 (updated at 13:14). Latest: M0.4 on 13 October 2026 at 11:56, 4 km South-East of Cairo Montenotte, 9 km deep.
Latest earthquake within 30 km
4 km South-East of Cairo Montenotte
Seismic activity within 30 km
30 km radiusINGV catalogue epicentres of the last ~12 years, within the given radius from the town centre.
How seismic is Castelletto d'Erro: zone 3
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 = 0.050 g (10% probability of exceedance in 50 years, rigid soil).
Why the ground rarely shakes here
Castelletto d'Erro sits in one of the most stable areas of Italy: far from the boundary between the Eurasian and African plates, on ancient, rigid crust that hardly accumulates tectonic stress any more.
That is why earthquakes here are rare and almost always weak: a small geological privilege.
“Within 30 km”: epicentres less than 30 km from the centre of Castelletto d'Erro. “In the town”: quakes whose nearest town to the epicentre is Castelletto d'Erro.
The seismic history of Castelletto d'Erro
The earthquakes that were actually felt in Castelletto d'Erro over the centuries, with the intensity observed on site (Mercalli MCS scale).
- 2001IV18 July 2001
Moderate: felt by many indoors; glasses and dishes rattle.
Monferrato earthquake (M4.2), epicentre 19 km away
- 2000IV-V21 August 2000
Rather strong: felt by almost everyone; hanging objects swing.
Monferrato earthquake (M4.9), epicentre 31 km away
- 1993NF17 July 1993
Imperceptible: only instruments record it.
Liguria occidentale earthquake (M4.3), epicentre 49 km away
- 1989NF26 December 1989
Imperceptible: only instruments record it.
Mar Ligure earthquake (M4.5), epicentre 142 km away
- 1897NF6 July 1897
Imperceptible: only instruments record it.
Mar Ligure earthquake (M4.2), epicentre 32 km away
- 1887VI23 February 1887
Strong: felt by everyone, many get scared; objects fall, first light damage to buildings.
Liguria occidentale earthquake (M6.3), epicentre 88 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 47 km from Eastern Monferrato, 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).
Over time within 30 km
Earthquake map within 30 km
60 eventsLatest earthquakes within 30 km
Nearby towns
How does it compare with the surroundings?
Castelletto d'Erro sits in one of the most seismically active areas of its province: quakes are a familiar presence here, almost always light.
Each quake is attributed to the town closest to its epicentre: the numbers describe the area, not the municipal territory alone.
Context
Province of Alessandria0 events · last 30 daysPiedmont region58 events · last 30 daysFrequently asked questions
Were there earthquakes near Castelletto d'Erro today?
Yes: today 1 quake was recorded within 30 km of Castelletto d'Erro, at 11:56, magnitude 0.4.
Is Castelletto d'Erro a seismic area?
Castelletto d'Erro 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 Castelletto d'Erro?
In the INGV catalogue since 2015, the strongest earthquake within 30 km of Castelletto d'Erro was magnitude 3.1, on 10 October 2015.
When was the last quake near Castelletto d'Erro?
The last quake recorded within 30 km of Castelletto d'Erro dates back to 13 October 2026, magnitude 0.4.
Tip. Click a nearby town to explore its seismicity.
Sources:INGV earthquake catalogueDBMI15 macroseismic historyCivil Protection seismic classification
Data: INGV — National Institute of Geophysics and Volcanology (CC-BY 4.0)