Earthquakes in Silvano d'Orba
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 = 0.075 g (10% probability of exceedance in 50 years, rigid soil).
The “area” is Silvano d'Orba plus nearby towns.
The seismic history of Silvano d'Orba
The earthquakes that were actually felt in Silvano d'Orba 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 54 km away
- 1993III17 July 1993
Light: felt by few people, like a passing truck.
Liguria occidentale earthquake (M4.3), epicentre 63 km away
- 1913F7 December 1913
Moderate: felt by many indoors; glasses and dishes rattle.
Valle Scrivia earthquake (M4.6), epicentre 17 km away
- 1897III-IV6 July 1897
Moderate: felt by many indoors; glasses and dishes rattle.
Mar Ligure earthquake (M4.2), epicentre 29 km away
- 1891V28 May 1891
Rather strong: felt by almost everyone; hanging objects swing.
Alessandrino earthquake (M4.1), epicentre 4 km away
- 1887F23 February 1887
Moderate: felt by many indoors; glasses and dishes rattle.
Liguria occidentale earthquake (M6.3), epicentre 103 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 34 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 27 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
16 eventsEarthquakes in the area
Nearby towns
How does it compare with the surroundings?
Silvano d'Orba 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 Silvano d'Orba?
No, no quakes were recorded today in the Silvano d'Orba area: the latest nearby dates back to 24 months ago.
Is Silvano d'Orba a seismic area?
Silvano d'Orba 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 Silvano d'Orba?
In the last ~12 years of INGV data, the strongest within 30 km of Silvano d'Orba was magnitude 3.1, in 2020.
When was the last quake near Silvano d'Orba?
The last quake recorded within 30 km of Silvano d'Orba was 11 days ago.
Tip. Click a nearby town to explore its seismicity.
Data: INGV — National Institute of Geophysics and Volcanology (CC-BY 4.0)