Earthquakes in Colle Brianza
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 = 0.061 g (10% probability of exceedance in 50 years, rigid soil).
The “area” is Colle Brianza plus nearby towns.
The seismic history of Colle Brianza
The earthquakes that were actually felt in Colle Brianza over the centuries, with the intensity observed on site (Mercalli MCS scale).
- 1995III29 October 1995
Light: felt by few people, like a passing truck.
Lago d'Iseo earthquake (M4.3), epicentre 36 km away · observed at Colle Brianza (Nava)
- 1991III-IV20 November 1991
Moderate: felt by many indoors; glasses and dishes rattle.
Grigioni, Vaz earthquake (M4.7), epicentre 109 km away · observed at Colle Brianza (Nava)
- 1887SF20 May 1887
Light: felt by few people, like a passing truck.
Lecchese earthquake (M4.0), epicentre 8 km away · observed at San Genesio
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 1 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).
Area over time
Earthquake map
2 eventsEarthquakes in the area
Nearby towns
How does it compare with the surroundings?
Colle Brianza sits in one of the most seismically active areas of its province: quakes are a familiar presence here, almost always light.
Each quake is attributed to the town closest to its epicentre: the numbers describe the area, not the municipal territory alone.
Context
Province of Lecco0 events · 30gLombardy region2 events · 30gFrequently asked questions
Were there earthquakes today in Colle Brianza?
No, no quakes were recorded today in the Colle Brianza area: the latest nearby dates back to 78 months ago.
Is Colle Brianza a seismic area?
Colle Brianza 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 Colle Brianza?
In the last ~11 years of INGV data, the strongest within 30 km of Colle Brianza was magnitude 3.9, in 2021.
When was the last quake near Colle Brianza?
The last quake recorded within 30 km of Colle Brianza was 5 months ago.
Tip. Click a nearby town to explore its seismicity.
Data: INGV — National Institute of Geophysics and Volcanology (CC-BY 4.0)