Earthquakes in Castelletto Monferrato
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 = 0.049 g (10% probability of exceedance in 50 years, rigid soil).
Why the ground rarely shakes here
Castelletto Monferrato 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.
The “area” is Castelletto Monferrato plus nearby towns.
The seismic history of Castelletto Monferrato
The earthquakes that were actually felt in Castelletto Monferrato 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 22 km away
- 2000V-VI21 August 2000
Strong: felt by everyone, many get scared; objects fall, first light damage to buildings.
Monferrato earthquake (M4.9), epicentre 16 km away
- 1897III-IV6 July 1897
Moderate: felt by many indoors; glasses and dishes rattle.
Mar Ligure earthquake (M4.2), epicentre 62 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 9 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).
Area over time
Earthquake map
7 eventsEarthquakes in the area
Nearby towns
How does it compare with the surroundings?
Castelletto Monferrato 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 Alessandria0 events · 30gPiedmont region34 events · 30gFrequently asked questions
Were there earthquakes today in Castelletto Monferrato?
No, no quakes were recorded today in the Castelletto Monferrato area: the latest nearby dates back to 45 months ago.
Is Castelletto Monferrato a seismic area?
Castelletto Monferrato 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 Castelletto Monferrato?
In the last ~12 years of INGV data, the strongest within 30 km of Castelletto Monferrato was magnitude 2.5, in 2024.
When was the last quake near Castelletto Monferrato?
The last quake recorded within 30 km of Castelletto Monferrato was 23 months ago.
Tip. Click a nearby town to explore its seismicity.
Data: INGV — National Institute of Geophysics and Volcanology (CC-BY 4.0)