Earthquakes today in Grondona
Today, within 30 km: no earthquakes recorded (updated at 13:16). Latest: M1.0 on 14 August 2026 at 07:12, 4 km South-West of Ceranesi, 12 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 Grondona: zone 3
Medium-low seismicity: strong quakes are rare, but not impossible.
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 = 0.096 g (10% probability of exceedance in 50 years, rigid soil).
“Within 30 km”: epicentres less than 30 km from the centre of Grondona. “In the town”: quakes whose nearest town to the epicentre is Grondona.
The seismic history of Grondona
The earthquakes that were actually felt in Grondona over the centuries, with the intensity observed on site (Mercalli MCS scale).
- 2005NF18 April 2005
Imperceptible: only instruments record it.
Valle del Trebbia earthquake (M4.0), epicentre 29 km away
- 2005NF13 April 2005
Imperceptible: only instruments record it.
Valle del Trebbia earthquake (M3.7), epicentre 27 km away
- 2002NF13 November 2002
Imperceptible: only instruments record it.
Franciacorta earthquake (M4.2), epicentre 140 km away
- 2000NF21 August 2000
Imperceptible: only instruments record it.
Monferrato earthquake (M4.9), epicentre 53 km away
- 1828VII-VIII9 October 1828
Ruinous: partial collapses in ordinary buildings, widespread heavy damage.
Oltrepò Pavese earthquake (M5.7), epicentre 15 km away
- 1828VII-VIII9 October 1828
Ruinous: partial collapses in ordinary buildings, widespread heavy damage.
Oltrepò Pavese earthquake (M5.7), epicentre 15 km away · observed at Variana
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 20 km from Rivanazzano-Stradella, 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
60 eventsLatest earthquakes within 30 km
Nearby towns
How does it compare with the surroundings?
Grondona records more quakes than the average of its province.
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 daysFrequently asked questions
Were there earthquakes near Grondona today?
No, no quakes were recorded today within 30 km of Grondona. The latest dates back to 14 August 2026.
Is Grondona a seismic area?
Grondona is classified in seismic zone 3 by the Civil Protection. Medium-low seismicity: strong quakes are rare, but not impossible.
What was the strongest earthquake near Grondona?
In the INGV catalogue since 2015, the strongest earthquake within 30 km of Grondona was magnitude 3.1, on 11 September 2020.
When was the last quake near Grondona?
The last quake recorded within 30 km of Grondona dates back to 14 August 2026, magnitude 1.0.
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)