Earthquakes today in San Siro
Today, within 30 km: no earthquakes recorded (updated at 14:23). Latest: M1.6 on 8 May 2025 at 15:51, outside Italy, 14 km deep.
Seismic activity within 30 km
30 km radiusINGV catalogue epicentres of the last ~12 years, within the given radius from the town centre.
How seismic is San Siro: zone 4
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 = 0.040 g (10% probability of exceedance in 50 years, rigid soil).
Why the ground rarely shakes here
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.
“Within 30 km”: epicentres less than 30 km from the centre of San Siro. “In the town”: quakes whose nearest town to the epicentre is San Siro.
The seismic history of San Siro
The earthquakes that were actually felt in San Siro over the centuries, with the intensity observed on site (Mercalli MCS scale).
- 1991III-IV20 November 1991
Moderate: felt by many indoors; glasses and dishes rattle.
Grigioni, Vaz earthquake (M4.7), epicentre 77 km away · observed at Santa Maria
- 1991III20 November 1991
Light: felt by few people, like a passing truck.
Grigioni, Vaz earthquake (M4.7), epicentre 77 km away · observed at San Siro (Acquaseria)
- 1898IV4 March 1898
Moderate: felt by many indoors; glasses and dishes rattle.
Parmense earthquake (M5.4), epicentre 176 km away · observed at Gallio
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 35 km from Western S-Alps internal thrust, 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).
Over time within 30 km
Earthquake map within 30 km
21 eventsLatest earthquakes within 30 km
Nearby towns
How does it compare with the surroundings?
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 Como0 events · last 30 daysLombardy region14 events · last 30 daysFrequently asked questions
Were there earthquakes near San Siro today?
No, no quakes were recorded today within 30 km of San Siro. The latest dates back to 8 May 2025.
Is San Siro a seismic area?
San Siro 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 San Siro?
In the INGV catalogue since 2015, the strongest earthquake within 30 km of San Siro was magnitude 2.5, on 21 June 2024.
When was the last quake near San Siro?
The last quake recorded within 30 km of San Siro dates back to 8 May 2025, magnitude 1.6.
Tip. Click a nearby town to explore its seismicity.
Sources:INGV earthquake catalogueDBMI15 macroseismic historyCivil Protection seismic classification
Data: INGV — National Institute of Geophysics and Volcanology (CC-BY 4.0)