Earthquakes in Poggibonsi
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?
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 = 0.140 g (10% probability of exceedance in 50 years, rigid soil).
The “area” is Poggibonsi plus nearby towns.
The seismic history of Poggibonsi
The earthquakes that were actually felt in Poggibonsi over the centuries, with the intensity observed on site (Mercalli MCS scale).
- 1918V10 November 1918
Rather strong: felt by almost everyone; hanging objects swing.
Appennino forlivese earthquake (M6.0), epicentre 80 km away
- 1911VI13 September 1911
Strong: felt by everyone, many get scared; objects fall, first light damage to buildings.
Chianti earthquake (M5.1), epicentre 15 km away
- 1911V13 September 1911
Rather strong: felt by almost everyone; hanging objects swing.
Chianti earthquake (M5.1), epicentre 15 km away · observed at Staggia
- 1909V25 August 1909
Rather strong: felt by almost everyone; hanging objects swing.
Crete Senesi earthquake (M5.3), epicentre 40 km away
- 1906V20 December 1906
Rather strong: felt by almost everyone; hanging objects swing.
Valdelsa earthquake (M4.0), epicentre 5 km away
- 1906VI-VII21 April 1906
Very strong: hard to stand; chimneys and roof tiles fall, serious damage to weaker buildings.
Valdelsa earthquake (M4.3), epicentre 2 km away
- 1901V22 September 1901
Rather strong: felt by almost everyone; hanging objects swing.
Valdelsa earthquake (M4.7), epicentre 20 km away
- 1897V22 May 1897
Rather strong: felt by almost everyone; hanging objects swing.
Valdelsa earthquake (M4.3), epicentre 4 km away
- 1895V-VI25 October 1895
Strong: felt by everyone, many get scared; objects fall, first light damage to buildings.
Chianti earthquake (M4.5), epicentre 9 km away
- 1869VI26 September 1869
Strong: felt by everyone, many get scared; objects fall, first light damage to buildings.
Valdelsa earthquake (M5.0), epicentre 4 km away
- 1804VI17 December 1804
Strong: felt by everyone, many get scared; objects fall, first light damage to buildings.
Valdelsa earthquake (M4.8), epicentre 5 km away
- 1804VII18 October 1804
Very strong: hard to stand; chimneys and roof tiles fall, serious damage to weaker buildings.
Valdelsa earthquake (M5.1), epicentre 4 km away
…and 32 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 50 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?
Poggibonsi 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 Siena8 events · 30gTuscany region112 events · 30gFrequently asked questions
Were there earthquakes today in Poggibonsi?
No, no quakes were recorded today in the Poggibonsi area: the latest nearby dates back to 12 days ago.
Is Poggibonsi a seismic area?
Poggibonsi 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 Poggibonsi?
In the last ~12 years of INGV data, the strongest within 30 km of Poggibonsi was magnitude 3.9, in 2016.
When was the last quake near Poggibonsi?
The last quake recorded within 30 km of Poggibonsi was 12 days ago.
Tip. Click a nearby town to explore its seismicity.
Data: INGV — National Institute of Geophysics and Volcanology (CC-BY 4.0)