Earthquakes in Orsara Bormida
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 = 0.067 g (10% probability of exceedance in 50 years, rigid soil).
The “area” is Orsara Bormida plus nearby towns.
The seismic history of Orsara Bormida
The earthquakes that were actually felt in Orsara Bormida over the centuries, with the intensity observed on site (Mercalli MCS scale).
- 2005NF18 April 2005
Imperceptible: only instruments record it.
Valle del Trebbia earthquake (M4.0), epicentre 62 km away
- 2001IV-V18 July 2001
Rather strong: felt by almost everyone; hanging objects swing.
Monferrato earthquake (M4.2), epicentre 16 km away
- 1993NF17 July 1993
Imperceptible: only instruments record it.
Liguria occidentale earthquake (M4.3), epicentre 60 km away
- 1897III-IV6 July 1897
Moderate: felt by many indoors; glasses and dishes rattle.
Mar Ligure earthquake (M4.2), epicentre 31 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 33 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
8 eventsEarthquakes in the area
Nearby towns
How does it compare with the surroundings?
Orsara Bormida is among the quietest towns of its province: very few epicentres are recorded here.
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 Orsara Bormida?
No, no quakes were recorded today in the Orsara Bormida area: the latest nearby dates back to 36 months ago.
Is Orsara Bormida a seismic area?
Orsara Bormida 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 Orsara Bormida?
In the last ~12 years of INGV data, the strongest within 30 km of Orsara Bormida was magnitude 3.1, in 2020.
When was the last quake near Orsara Bormida?
The last quake recorded within 30 km of Orsara Bormida 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)