Earthquakes today in Castell'Alfero
Today, within 30 km: no earthquakes recorded (updated at 11:39). Latest: M1.7 on 30 September 2026 at 16:57, 2 km South-West of Coazzolo, 20 km deep.
Latest earthquake within 30 km
Seismic activity within 30 km
30 km radiusINGV catalogue epicentres of the last ~12 years, within the given radius from the town centre.
How seismic is Castell'Alfero: zone 4
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 = 0.040 g (10% probability of exceedance in 50 years, rigid soil).
Why the ground rarely shakes here
Castell'Alfero 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.
“Within 30 km”: epicentres less than 30 km from the centre of Castell'Alfero. “In the town”: quakes whose nearest town to the epicentre is Castell'Alfero.
The seismic history of Castell'Alfero
The earthquakes that were actually felt in Castell'Alfero over the centuries, with the intensity observed on site (Mercalli MCS scale).
- 2001III-IV18 July 2001
Moderate: felt by many indoors; glasses and dishes rattle.
Monferrato earthquake (M4.2), epicentre 27 km away
- 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
- 1887VI23 February 1887
Strong: felt by everyone, many get scared; objects fall, first light damage to buildings.
Liguria occidentale earthquake (M6.3), epicentre 122 km away
- 1808IV-V2 April 1808
Rather strong: felt by almost everyone; hanging objects swing.
Val Pellice earthquake (M5.6), epicentre 77 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 15 km from Western Monferrato, 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).
Over time within 30 km
Earthquake map within 30 km
22 eventsLatest earthquakes within 30 km
Nearby towns
How does it compare with the surroundings?
Castell'Alfero 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 Asti1 event · last 30 daysPiedmont region58 events · last 30 daysFrequently asked questions
Were there earthquakes near Castell'Alfero today?
No, no quakes were recorded today within 30 km of Castell'Alfero. The latest dates back to 30 September 2026.
Is Castell'Alfero a seismic area?
Castell'Alfero 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 Castell'Alfero?
In the INGV catalogue since 2015, the strongest earthquake within 30 km of Castell'Alfero was magnitude 2.9, on 7 February 2023.
When was the last quake near Castell'Alfero?
The last quake recorded within 30 km of Castell'Alfero dates back to 30 September 2026, 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)