Earthquakes in Castellar Guidobono
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 = 0.090 g (10% probability of exceedance in 50 years, rigid soil).
The “area” is Castellar Guidobono plus nearby towns.
The seismic history of Castellar Guidobono
The earthquakes that were actually felt in Castellar Guidobono over the centuries, with the intensity observed on site (Mercalli MCS scale).
- 2000NF21 August 2000
Imperceptible: only instruments record it.
Monferrato earthquake (M4.9), epicentre 45 km away
- 1887V-VI23 February 1887
Strong: felt by everyone, many get scared; objects fall, first light damage to buildings.
Liguria occidentale earthquake (M6.3), epicentre 136 km away
- 1828VI-VII9 October 1828
Very strong: hard to stand; chimneys and roof tiles fall, serious damage to weaker buildings.
Oltrepò Pavese earthquake (M5.7), epicentre 12 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 sits above this source area: the deep structure where this area's earthquakes can originate.
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
16 eventsEarthquakes in the area
Nearby towns
How does it compare with the surroundings?
Castellar Guidobono 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 Castellar Guidobono?
No, no quakes were recorded today in the Castellar Guidobono area: the latest nearby dates back to 16 months ago.
Is Castellar Guidobono a seismic area?
Castellar Guidobono 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 Castellar Guidobono?
In the last ~12 years of INGV data, the strongest within 30 km of Castellar Guidobono was magnitude 3.7, in 2020.
When was the last quake near Castellar Guidobono?
The last quake recorded within 30 km of Castellar Guidobono was 2 months ago.
Tip. Click a nearby town to explore its seismicity.
Data: INGV — National Institute of Geophysics and Volcanology (CC-BY 4.0)