Earthquakes today in Grignasco
Today, within 30 km: no earthquakes recorded (updated at 10:42). Latest: M1.9 on 1 June 2026 at 21:45, 3 km North-East of Greggio, 26 km deep.
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 Grignasco: 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
Grignasco 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 Grignasco. “In the town”: quakes whose nearest town to the epicentre is Grignasco.
The seismic history of Grignasco
The earthquakes that were actually felt in Grignasco over the centuries, with the intensity observed on site (Mercalli MCS scale).
- 1887V-VI23 February 1887
Strong: felt by everyone, many get scared; objects fall, first light damage to buildings.
Liguria occidentale earthquake (M6.3), epicentre 202 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 57 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
19 eventsLatest earthquakes within 30 km
Nearby towns
How does it compare with the surroundings?
Grignasco 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 Novara0 events · last 30 daysPiedmont region58 events · last 30 daysFrequently asked questions
Were there earthquakes near Grignasco today?
No, no quakes were recorded today within 30 km of Grignasco. The latest dates back to 1 June 2026.
Is Grignasco a seismic area?
Grignasco 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 Grignasco?
In the INGV catalogue since 2015, the strongest earthquake within 30 km of Grignasco was magnitude 1.9, on 1 June 2026.
When was the last quake near Grignasco?
The last quake recorded within 30 km of Grignasco dates back to 1 June 2026, magnitude 1.9.
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)