Earthquakes in Grosseto
Seismic activity in the surroundings
30 km radiusINGV catalogue epicentres of the last ~12 years, within the given radius from the town centre.
How seismic is this area?
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 = 0.042 g (10% probability of exceedance in 50 years, rigid soil).
Why the ground rarely shakes here
Grosseto 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.
The “area” is Grosseto plus nearby towns.
The seismic history of Grosseto
The earthquakes that were actually felt in Grosseto over the centuries, with the intensity observed on site (Mercalli MCS scale).
- 2016F30 October 2016
Moderate: felt by many indoors; glasses and dishes rattle.
Valnerina earthquake (M6.6), epicentre 179 km away
- 2008F23 December 2008
Moderate: felt by many indoors; glasses and dishes rattle.
Parmense earthquake (M5.4), epicentre 219 km away
- 1980V-VI8 September 1980
Strong: felt by everyone, many get scared; objects fall, first light damage to buildings.
Costa Grossetana earthquake (M4.4), epicentre 3 km away · observed at Marina di Grosseto
- 1980V8 September 1980
Rather strong: felt by almost everyone; hanging objects swing.
Costa Grossetana earthquake (M4.4), epicentre 3 km away · observed at Magazzini Alberese
- 1980V8 September 1980
Rather strong: felt by almost everyone; hanging objects swing.
Costa Grossetana earthquake (M4.4), epicentre 3 km away
- 1973II-III30 December 1973
Light: felt by few people, like a passing truck.
Grossetano earthquake (M4.1), epicentre 67 km away
- 1972III25 October 1972
Light: felt by few people, like a passing truck.
Appennino settentrionale earthquake (M4.9), epicentre 227 km away
- 1970II-III19 August 1970
Light: felt by few people, like a passing truck.
Colline Metallifere earthquake (M4.7), epicentre 71 km away
- 1911III13 September 1911
Light: felt by few people, like a passing truck.
Chianti earthquake (M5.1), epicentre 97 km away
- 1909V25 August 1909
Rather strong: felt by almost everyone; hanging objects swing.
Crete Senesi earthquake (M5.3), epicentre 70 km away
- 1905III-IV12 February 1905
Moderate: felt by many indoors; glasses and dishes rattle.
Monte Amiata earthquake (M4.5), epicentre 57 km away
- 1895III18 May 1895
Light: felt by few people, like a passing truck.
Fiorentino earthquake (M5.5), epicentre 123 km away
…and 17 more documented effects in this town's history.
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 98 km from Livorno Hills, 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).
Area over time
Earthquake map
60 eventsEarthquakes in the area
Nearby towns
How does it compare with the surroundings?
Grosseto is about average for its province in recorded quakes.
Each quake is attributed to the town closest to its epicentre: the numbers describe the area, not the municipal territory alone.
Context
Province of Grosseto1 events · 30gTuscany region112 events · 30gFrequently asked questions
Were there earthquakes today in Grosseto?
No, no quakes were recorded today in the Grosseto area: the latest nearby dates back to 3 months ago.
Is Grosseto a seismic area?
Grosseto 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 Grosseto?
In the last ~12 years of INGV data, the strongest within 30 km of Grosseto was magnitude 2.2, in 2015.
When was the last quake near Grosseto?
The last quake recorded within 30 km of Grosseto was 67 months ago.
Tip. Click a nearby town to explore its seismicity.
Data: INGV — National Institute of Geophysics and Volcanology (CC-BY 4.0)