Earthquakes in Borgo San Siro
Seismic activity in the surroundings
30 km radiusINGV catalogue epicentres of the last ~11 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 = 0.050 g (10% probability of exceedance in 50 years, rigid soil).
Why the ground rarely shakes here
Borgo San Siro 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 Borgo San Siro plus nearby towns.
The seismic history of Borgo San Siro
The earthquakes that were actually felt in Borgo San Siro over the centuries, with the intensity observed on site (Mercalli MCS scale).
- 2002NF13 November 2002
Imperceptible: only instruments record it.
Franciacorta earthquake (M4.2), epicentre 104 km away
- 1951V15 May 1951
Rather strong: felt by almost everyone; hanging objects swing.
Lodigiano earthquake (M5.2), epicentre 53 km away
- 1909NF13 January 1909
Imperceptible: only instruments record it.
Emilia Romagna orientale earthquake (M5.4), epicentre 229 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 26 km from Rivanazzano-Stradella, 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
3 eventsEarthquakes in the area
Nearby towns
How does it compare with the surroundings?
Borgo San Siro 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 Pavia0 events · 30gLombardy region2 events · 30gFrequently asked questions
Were there earthquakes today in Borgo San Siro?
No, no quakes were recorded today in the Borgo San Siro area: the latest nearby dates back to 65 months ago.
Is Borgo San Siro a seismic area?
Borgo San Siro 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 Borgo San Siro?
In the last ~11 years of INGV data, the strongest within 30 km of Borgo San Siro was magnitude 3.8, in 2020.
When was the last quake near Borgo San Siro?
The last quake recorded within 30 km of Borgo San Siro was 8 months ago.
Tip. Click a nearby town to explore its seismicity.
Data: INGV — National Institute of Geophysics and Volcanology (CC-BY 4.0)