Earthquakes in Oltrona di San Mamette
No epicentres recorded in Oltrona di San Mamette in our archive. Here is the seismicity of the area and its surroundings.
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?
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 = 0.039 g (10% probability of exceedance in 50 years, rigid soil).
Why the ground rarely shakes here
Oltrona di San Mamette 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.
The “area” is Oltrona di San Mamette plus nearby towns.
The seismic history of Oltrona di San Mamette
The earthquakes that were actually felt in Oltrona di San Mamette over the centuries, with the intensity observed on site (Mercalli MCS scale).
- 2002NF13 November 2002
Imperceptible: only instruments record it.
Franciacorta earthquake (M4.2), epicentre 92 km away
- 1991NF20 November 1991
Imperceptible: only instruments record it.
Grigioni, Vaz earthquake (M4.7), epicentre 117 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 32 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
0 eventsEarthquakes in the area
Nearby towns
How does it compare with the surroundings?
Oltrona di San Mamette 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 · 30gLombardy region11 events · 30gFrequently asked questions
Were there earthquakes today in Oltrona di San Mamette?
No, no quakes were recorded today in the Oltrona di San Mamette area.
Is Oltrona di San Mamette a seismic area?
Oltrona di San Mamette 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 Oltrona di San Mamette?
In the last ~12 years of INGV data, the strongest within 30 km of Oltrona di San Mamette was magnitude 2.4, in 2017.
When was the last quake near Oltrona di San Mamette?
The last quake recorded within 30 km of Oltrona di San Mamette was 27 months ago.
Tip. Click a nearby town to explore its seismicity.
Data: INGV — National Institute of Geophysics and Volcanology (CC-BY 4.0)