Earthquakes today in Trezzano sul Naviglio
Today, within 30 km: no earthquakes recorded (updated at 14:11). Latest: M1.6 on 16 October 2025 at 00:06, 3 km North-West of San Giuliano Milanese, 40 km deep.
Latest earthquake within 30 km
3 km North-West of San Giuliano Milanese
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 Trezzano sul Naviglio: 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 = 0.047 g (10% probability of exceedance in 50 years, rigid soil).
Why the ground rarely shakes here
Trezzano sul Naviglio 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 Trezzano sul Naviglio. “In the town”: quakes whose nearest town to the epicentre is Trezzano sul Naviglio.
The seismic history of Trezzano sul Naviglio
The earthquakes that were actually felt in Trezzano sul Naviglio over the centuries, with the intensity observed on site (Mercalli MCS scale).
- 2008F23 December 2008
Moderate: felt by many indoors; glasses and dishes rattle.
Parmense earthquake (M5.4), epicentre 141 km away
- 2003IV11 April 2003
Moderate: felt by many indoors; glasses and dishes rattle.
Valle Scrivia earthquake (M4.8), epicentre 75 km away
- 1987III-IV2 May 1987
Moderate: felt by many indoors; glasses and dishes rattle.
Reggiano earthquake (M4.7), epicentre 146 km away
- 1983IV9 November 1983
Moderate: felt by many indoors; glasses and dishes rattle.
Parmense earthquake (M5.0), epicentre 121 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 22 km from Western S-Alps external thrust shallow-west, 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
19 eventsLatest earthquakes within 30 km
Nearby towns
How does it compare with the surroundings?
Trezzano sul Naviglio 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 Milano0 events · last 30 daysLombardy region14 events · last 30 daysFrequently asked questions
Were there earthquakes near Trezzano sul Naviglio today?
No, no quakes were recorded today within 30 km of Trezzano sul Naviglio. The latest dates back to 16 October 2025.
Is Trezzano sul Naviglio a seismic area?
Trezzano sul Naviglio 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 Trezzano sul Naviglio?
In the INGV catalogue since 2015, the strongest earthquake within 30 km of Trezzano sul Naviglio was magnitude 3.8, on 17 December 2020.
When was the last quake near Trezzano sul Naviglio?
The last quake recorded within 30 km of Trezzano sul Naviglio dates back to 16 October 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)