Province of Alessandria

Earthquakes in Conzano

2.1
light
LATEST QUAKE

3 km South-East of Castelletto Monferrato

81 months ago · 6 Jan, 09:28
Depth 43 km

Seismic activity in the surroundings

30 km radius
695
days since the last quake nearby
18
quakes recorded since 2014
~8 months
on average, one quake every
2.5
The strongest within 30 km
1 km North of Mombaruzzo
23 months ago · 28 Sept, 12:12

INGV catalogue epicentres of the last ~12 years, within the given radius from the town centre.

How seismic is this area?

Zone4
Seismic zone 4

The quietest class: the probability of strong earthquakes is very low.

Official Civil Protection classification (upd. 2025), used for building codes.

Very low
Expected shaking, compared with the other Italian municipalities (INGV MPS04 model)

Hazard describes the long-term expected shaking: it is not a forecast. Technical value: ag = 0.043 g (10% probability of exceedance in 50 years, rigid soil).

Why the ground rarely shakes here

Conzano 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.

Closest earthquake
Earthquake details
1
In the town
total on record
0
In the town
last 12 months
0
In the area
last 12 months
M2.1
Strongest ever
In the area

The “area” is Conzano plus nearby towns.

Last earthquake: 135 months ago · 1,015 inhabitants

The seismic history of Conzano

The earthquakes that were actually felt in Conzano over the centuries, with the intensity observed on site (Mercalli MCS scale).

  1. 2001IV-V18 July 2001

    Rather strong: felt by almost everyone; hanging objects swing.

    Monferrato earthquake (M4.2), epicentre 26 km away

  2. 2000V-VI21 August 2000

    Strong: felt by everyone, many get scared; objects fall, first light damage to buildings.

    Monferrato earthquake (M4.9), epicentre 16 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.

15415.3
Valle Scrivia earthquake
22 October 1541 · 46 km from here
VIIIRuinous: partial collapses in ordinary buildings, widespread heavy damage.
16805.1
Valle Scrivia earthquake
30 April 1680 · 47 km from here
VIIVery strong: hard to stand; chimneys and roof tiles fall, serious damage to weaker buildings.
20004.9
Monferrato earthquake
21 August 2000 · 16 km from here
VIStrong: felt by everyone, many get scared; objects fall, first light damage to buildings.
13694.9
Alessandria earthquake
1 February 1369 · 18 km from here
VII-VIIIRuinous: partial collapses in ordinary buildings, widespread heavy damage.

Source: Parametric Catalogue of Italian Earthquakes CPTI15 (INGV, CC BY 4.0).

The closest seismic structure

Western Monferrato

The town lies about 5 km from Western Monferrato, one of the seismic structures mapped by INGV geologists.

estimated maximum magnitude 6.4between 1 and 8 km deep

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

August 2026no events
Oct
Jan '25
Apr
Jul
Oct
Jan '26
Apr
Jul

Earthquake map

2 events
Magnitude:lightweakmoderatestrong

Earthquakes in the area

2.1
81 months ago
6 Jan, 09:28
2.1
2 km North-West of Conzano
2 km North-West · 49 km
135 months ago
22 Jul, 14:50

Nearby towns

How does it compare with the surroundings?

Conzano records more quakes than the average of its province.

quietermore active
More epicentres than 66% of the 187 towns in the province.
Conzano1
Nearby towns average0.1

Each quake is attributed to the town closest to its epicentre: the numbers describe the area, not the municipal territory alone.

Context

Province of Alessandria0 events · 30gPiedmont region34 events · 30g
ISTAT code: 006061

Frequently asked questions

Were there earthquakes today in Conzano?

No, no quakes were recorded today in the Conzano area: the latest nearby dates back to 81 months ago.

Is Conzano a seismic area?

Conzano 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 Conzano?

In the last ~12 years of INGV data, the strongest within 30 km of Conzano was magnitude 2.5, in 2024.

When was the last quake near Conzano?

The last quake recorded within 30 km of Conzano was 23 months ago.

Tip. Click a nearby town to explore its seismicity.

Data: INGV — National Institute of Geophysics and Volcanology (CC-BY 4.0)

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