Province of Alessandria

Earthquakes today in San Giorgio Monferrato

Today, within 30 km: no earthquakes recorded (updated at 10:56). Latest: M1.7 on 5 December 2022 at 17:47, 4 km West of Pietra Marazzi, 35 km deep.

1.7
very light

Latest earthquake within 30 km

4 km West of Pietra Marazzi

3 years ago · 5 Dec 2022, 17:47
Depth 35 km

Seismic activity within 30 km

30 km radius
1,408
days since the last quake within 30 km
9
quakes recorded since 2015
~16 months
on average, one quake every
2.1
The strongest within 30 km
3 km South-East of Castelletto Monferrato
6 years ago · 6 Jan 2020, 09:28

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

How seismic is San Giorgio Monferrato: zone 4

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 = 0.038 g (10% probability of exceedance in 50 years, rigid soil).

Why the ground rarely shakes here

San Giorgio Monferrato 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
Go to Coniolo Earthquake details
0
In the town
total on record
0
In the town
last 12 months
0
Within 30 km
last 12 months
M2.1
Strongest since 2015
Within 30 km

“Within 30 km”: epicentres less than 30 km from the centre of San Giorgio Monferrato. “In the town”: quakes whose nearest town to the epicentre is San Giorgio Monferrato.

No epicentre attributed to San Giorgio Monferrato in the INGV catalogue since 2015 · 1,279 inhabitants

The seismic history of San Giorgio Monferrato

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

  1. 2001NF18 July 2001

    Imperceptible: only instruments record it.

    Monferrato earthquake (M4.2), epicentre 34 km away · observed at San Giorgio

  2. 2000V21 August 2000

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

    Monferrato earthquake (M4.9), epicentre 22 km away · observed at San Giorgio

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.

20004.9
Monferrato earthquake
21 August 2000 · 22 km from here
VIStrong: felt by everyone, many get scared; objects fall, first light damage to buildings.
13694.9
Alessandria earthquake
1 February 1369 · 27 km from here
VII-VIIIRuinous: partial collapses in ordinary buildings, widespread heavy damage.
19874.8
Lomellina earthquake
21 July 1987 · 25 km from here
19894.5
Alessandrino earthquake
13 September 1989 · 35 km from here

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

The closest seismic structure

Western Monferrato

The town sits above this source area: the deep structure where this area's earthquakes can originate.

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).

Over time within 30 km

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

Earthquake map within 30 km

9 events
Magnitude:lightweakmoderatestrong

Latest earthquakes within 30 km

1.7
4 km West of Pietra Marazzi
24 km South-East · 35 km
3 years ago
5 Dec 2022, 17:47
1.4
3 km North of Alessandria
25 km South-East · 52 km
4 years ago
21 May 2022, 02:36
1.5
4 km East of Oviglio
28 km South-East · 38 km
4 years ago
13 Nov 2021, 03:13
2.1
6 years ago
6 Jan 2020, 09:28
1.4
7 years ago
18 May 2019, 06:32
1.8
2 km South of Cossombrato
26 km South-West · 23 km
9 years ago
28 Sept 2017, 06:06
1.7
1 km West of Coniolo
6 km North-West · 63 km
10 years ago
7 Jun 2016, 07:57
2.1
2 km North-West of Conzano
8 km South-East · 49 km
11 years ago
22 Jul 2015, 14:50
1.9
1 km West of Solonghello
10 km West · 61 km
11 years ago
17 Apr 2015, 13:30

Nearby towns

How does it compare with the surroundings?

San Giorgio Monferrato is among the quietest towns of its province: very few epicentres are recorded here.

quietermore active
More epicentres than 0% of the 187 towns in the province.
San Giorgio Monferrato0
Nearby towns average0.3

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 · last 30 daysPiedmont region58 events · last 30 days
ISTAT code: 006153

Frequently asked questions

Were there earthquakes near San Giorgio Monferrato today?

No, no quakes were recorded today within 30 km of San Giorgio Monferrato. The latest dates back to 5 December 2022.

Is San Giorgio Monferrato a seismic area?

San Giorgio Monferrato 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 San Giorgio Monferrato?

In the INGV catalogue since 2015, the strongest earthquake within 30 km of San Giorgio Monferrato was magnitude 2.1, on 6 January 2020.

When was the last quake near San Giorgio Monferrato?

The last quake recorded within 30 km of San Giorgio Monferrato dates back to 5 December 2022, magnitude 1.7.

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)