Earthquakes in Piancastagnaio
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?
A zone where strong earthquakes are possible: new buildings follow strict anti-seismic criteria.
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 Piancastagnaio plus nearby towns.
The seismic history of Piancastagnaio
The earthquakes that were actually felt in Piancastagnaio over the centuries, with the intensity observed on site (Mercalli MCS scale).
- 2000VI-VII1 April 2000
Very strong: hard to stand; chimneys and roof tiles fall, serious damage to weaker buildings.
Monte Amiata earthquake (M4.5), epicentre 1 km away
- 1975VI16 April 1975
Strong: felt by everyone, many get scared; objects fall, first light damage to buildings.
Monte Amiata earthquake (M4.2), epicentre 3 km away
- 1958IV30 May 1958
Moderate: felt by many indoors; glasses and dishes rattle.
Val di Paglia earthquake (M4.0), epicentre 11 km away
- 1948V-VI3 November 1948
Strong: felt by everyone, many get scared; objects fall, first light damage to buildings.
Monte Amiata earthquake (M4.8), epicentre 10 km away
- 1940VI-VII16 October 1940
Very strong: hard to stand; chimneys and roof tiles fall, serious damage to weaker buildings.
Val di Paglia earthquake (M5.3), epicentre 17 km away
- 1940V-VI16 October 1940
Strong: felt by everyone, many get scared; objects fall, first light damage to buildings.
Val di Paglia earthquake (M5.3), epicentre 17 km away · observed at Saragiolo
- 1926VI8 January 1926
Strong: felt by everyone, many get scared; objects fall, first light damage to buildings.
Monte Amiata earthquake (M4.9), epicentre 5 km away
- 1919VII10 September 1919
Very strong: hard to stand; chimneys and roof tiles fall, serious damage to weaker buildings.
Val di Paglia earthquake (M5.4), epicentre 10 km away
- 1909IV-V25 August 1909
Rather strong: felt by almost everyone; hanging objects swing.
Crete Senesi earthquake (M5.3), epicentre 43 km away
- 1902V-VI17 December 1902
Strong: felt by everyone, many get scared; objects fall, first light damage to buildings.
Monte Amiata earthquake (M4.8), epicentre 7 km away
- 1815D11 January 1815
Strong: felt by everyone, many get scared; objects fall, first light damage to buildings.
Monte Amiata earthquake (M4.9), epicentre 5 km away
- 1777VI-VII5 October 1777
Very strong: hard to stand; chimneys and roof tiles fall, serious damage to weaker buildings.
Val di Paglia earthquake (M5.1), epicentre 9 km away
…and 10 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 69 km from Mugello-Citta' di Castello-Leonessa, 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?
Piancastagnaio 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 Siena8 events · 30gTuscany region112 events · 30gFrequently asked questions
Were there earthquakes today in Piancastagnaio?
No, no quakes were recorded today in the Piancastagnaio area: the latest nearby dates back to 16 days ago.
Is Piancastagnaio a seismic area?
Piancastagnaio is classified in seismic zone 2 by the Civil Protection. A zone where strong earthquakes are possible: new buildings follow strict anti-seismic criteria.
What was the strongest earthquake near Piancastagnaio?
In the last ~12 years of INGV data, the strongest within 30 km of Piancastagnaio was magnitude 4.1, in 2016.
When was the last quake near Piancastagnaio?
The last quake recorded within 30 km of Piancastagnaio was 16 days ago.
Tip. Click a nearby town to explore its seismicity.
Data: INGV — National Institute of Geophysics and Volcanology (CC-BY 4.0)