Earthquakes in Osnago
Seismic activity in the surroundings
30 km radiusINGV catalogue epicentres of the last ~12 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 = 0.069 g (10% probability of exceedance in 50 years, rigid soil).
The “area” is Osnago plus nearby towns.
The seismic history of Osnago
The earthquakes that were actually felt in Osnago over the centuries, with the intensity observed on site (Mercalli MCS scale).
- 1991NF20 November 1991
Imperceptible: only instruments record it.
Grigioni, Vaz earthquake (M4.7), epicentre 118 km away
- 1983III9 November 1983
Light: felt by few people, like a passing truck.
Parmense earthquake (M5.0), epicentre 124 km away · observed at Loreto
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 sits above this source area: the deep structure where this area's earthquakes can originate.
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
1 eventsEarthquakes in the area
Nearby towns
How does it compare with the surroundings?
Osnago 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 Lecco0 events · 30gLombardy region11 events · 30gFrequently asked questions
Were there earthquakes today in Osnago?
No, no quakes were recorded today in the Osnago area: the latest nearby dates back to 137 months ago.
Is Osnago a seismic area?
Osnago 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 Osnago?
In the last ~12 years of INGV data, the strongest within 30 km of Osnago was magnitude 3.9, in 2021.
When was the last quake near Osnago?
The last quake recorded within 30 km of Osnago 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)