Earthquakes today in Biassono
Today, within 30 km: no earthquakes recorded (updated at 14:23). 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 Biassono: zone 3
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 = 0.055 g (10% probability of exceedance in 50 years, rigid soil).
“Within 30 km”: epicentres less than 30 km from the centre of Biassono. “In the town”: quakes whose nearest town to the epicentre is Biassono.
The seismic history of Biassono
The earthquakes that were actually felt in Biassono over the centuries, with the intensity observed on site (Mercalli MCS scale).
- 2002IV13 November 2002
Moderate: felt by many indoors; glasses and dishes rattle.
Franciacorta earthquake (M4.2), epicentre 66 km away
- 1991V20 November 1991
Rather strong: felt by almost everyone; hanging objects swing.
Grigioni, Vaz earthquake (M4.7), epicentre 124 km away
- 1968III18 June 1968
Light: felt by few people, like a passing truck.
Valle d'Aosta earthquake (M4.9), epicentre 118 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 7 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
37 eventsLatest earthquakes within 30 km
Nearby towns
How does it compare with the surroundings?
Biassono 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 Monza e Brianza0 events · last 30 daysLombardy region14 events · last 30 daysFrequently asked questions
Were there earthquakes near Biassono today?
No, no quakes were recorded today within 30 km of Biassono. The latest dates back to 16 October 2025.
Is Biassono a seismic area?
Biassono 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 Biassono?
In the INGV catalogue since 2015, the strongest earthquake within 30 km of Biassono was magnitude 3.9, on 18 December 2021.
When was the last quake near Biassono?
The last quake recorded within 30 km of Biassono 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)